At the A1 level, learners are just beginning to build their vocabulary of basic actions and descriptions. While '意外地' (yìwài de) might be slightly advanced for a pure beginner, it is an excellent word to introduce the concept of adverbs and the '地' (de) particle. At this stage, you should focus on the simplest meaning: 'unexpectedly' or 'by surprise.' Imagine you are telling a very simple story about your day. You went to the park, and you saw a friend. If you didn't plan to see that friend, you saw them 'unexpectedly.' The grammar at A1 is kept simple: Subject + 意外地 + Verb. For example, '我意外地看见了他' (I unexpectedly saw him). Learners should focus on the fact that this word adds a little bit of 'flavor' to a sentence, making it more interesting than just a list of facts. It helps you express that something wasn't part of your plan. In Chinese, the structure of '意' (intent) and '外' (outside) is a great way to remember the meaning: it is something that happened 'outside' of what you were 'thinking.' Even at A1, using this word can make your simple sentences sound much more like a real conversation. You don't need to worry about complex grammar rules yet; just remember to put it before the action you are describing. If you are surprised by something, '意外地' is your friend. It is a building block for more complex storytelling later on.
At the A2 level, you are expected to handle more varied daily situations and describe events in more detail. '意外地' (yìwài de) is a perfect fit for this level because it allows you to describe the *manner* in which things happen. You are moving beyond 'I did this' to 'I did this in an unexpected way.' At A2, you should start paying close attention to the '地' particle. This particle is the adverbial marker, similar to '-ly' in English. Understanding how '意外' (unexpected) becomes '意外地' (unexpectedly) is a key grammar point for A2. You will use this word to describe common occurrences: finding money in a pocket, meeting a neighbor at the supermarket, or a sudden change in the weather. You should also start to notice the difference between '意外地' and '突然' (tūrán - suddenly). While 'suddenly' is about speed, 'unexpectedly' is about your lack of preparation. For example, if a meeting is cancelled, it might not be 'sudden' (you found out via email), but it is 'unexpected.' At this level, you can also start using '意外地' with more diverse verbs like '发现' (discover), '得到' (get), or '发生' (happen). This word will help you narrate your experiences more effectively in the past tense, which is a major focus of A2 level learning. It adds a layer of narrative complexity that shows you are beginning to understand how to structure a story in Chinese.
At the B1 intermediate level, '意外地' (yìwài de) becomes a tool for more nuanced expression and discussion of feelings and abstract events. You should be comfortable using it in both spoken and written forms. At this stage, you are not just describing physical events but also results and outcomes. For instance, you might discuss how a business project 'unexpectedly' succeeded or how a research finding was 'unexpectedly' significant. The grammar becomes more flexible, and you might use '意外地' in more complex sentence structures, such as those involving '虽然...但是...' (although... but...). For example, '虽然他没怎么复习,但是他意外地考得很好' (Although he didn't review much, he unexpectedly tested very well). At B1, you should also be aware of the register. '意外地' is neutral and can be used in most situations, but you should start comparing it with '竟然' (jìngrán) and '居然' (jūrán), which express stronger emotions like disbelief or irony. Understanding these subtle differences is a key part of moving from A2 to B1. You will also encounter '意外地' in more varied contexts, such as news articles or short stories, where it acts as a transition word to introduce a plot twist. Your goal at B1 is to use '意外地' to link ideas and show the relationship between your expectations and the reality of a situation. It helps you move from being a 'reporter' of facts to a 'narrator' of experiences.
At the B2 upper-intermediate level, '意外地' (yìwài de) is used with high frequency and precision. You should be able to use it to describe complex social, professional, and academic scenarios. At this level, the focus shifts to the subtle impact the word has on the tone of a sentence. For example, in a business negotiation, using '意外地' can be a polite way to introduce a disagreement or a surprising data point without sounding confrontational. You should also be comfortable using the word in its various forms, including the noun '意外' (accident/surprise) and the adjective '意外的' (unexpected). For instance, '这是一个意外的结果' (This is an unexpected result) vs. '结果意外地好' (The result was unexpectedly good). At B2, you are expected to understand the use of '意外地' in more formal written Chinese, such as in reports or essays, where it serves to highlight anomalies in data or trends. You should also be able to distinguish it from more formal synonyms like '不料' (bùliào) or '出乎意料' (chūhū yìliào). Your usage should reflect an understanding of how 'unexpectedness' is framed in Chinese culture—often as a matter of fate or external circumstances. You might also use it in more philosophical or abstract discussions about the nature of life and its unpredictability. At B2, '意外地' is no longer just a word; it is a strategic tool for managing information flow and emotional tone in your communication.
At the C1 advanced level, '意外地' (yìwài de) is used with complete fluency and a deep understanding of its stylistic implications. You should be able to appreciate the word's use in literature and high-level journalism, where it is often employed to create suspense or to underscore a thematic point. At this stage, you are expected to recognize the rhythmic and tonal qualities of the word in a sentence. For example, in a well-crafted essay, the placement of '意外地' can affect the emphasis and the 'breath' of the prose. You should also be able to use it in more sophisticated grammatical structures, such as within 'not only... but also' (不仅...而且...) or 'even' (甚至) constructions to emphasize the level of surprise. For instance, '他不仅完成了任务,而且意外地获得了奖金' (He not only completed the task but also unexpectedly received a bonus). At C1, you should also be aware of the historical and etymological roots of the word, understanding how the concept of 'intent' (意) has evolved in Chinese thought. You might use '意外地' to discuss complex psychological states or to analyze the motives of characters in a literary text. Your usage should be indistinguishable from that of a native speaker, showing a mastery of both the word's primary meaning and its most subtle connotations. You can also use it to express sarcasm or irony in very specific social contexts, demonstrating a high level of cultural and linguistic competence.
At the C2 mastery level, '意外地' (yìwài de) is a word that you use with effortless precision, fully aware of its place within the vast tapestry of the Chinese language. At this level, you can use the word to play with language, perhaps using it in a way that subverts expectations itself. You are capable of using it in any context, from legal documents to experimental poetry. You understand the most obscure nuances, such as how '意外地' might interact with different regional dialects or historical styles of writing. In a C2 level discussion, you might use '意外地' to critique a complex theory or to describe a highly specific, rare phenomenon in a scientific or philosophical treatise. You are also able to explain the word's nuances to others, perhaps discussing the difference between '意外地' and other classical or modern terms for surprise. Your command of the word is such that you can use it to create specific rhetorical effects, such as using it to build a sense of inevitability or to highlight the absurdity of a situation. At C2, '意外地' is a small but essential part of your extensive linguistic toolkit, used with the same ease and accuracy as a native scholar or professional. You have a profound appreciation for how this word, composed of 'intent' and 'outside,' encapsulates a fundamental aspect of the human experience: the constant encounter with the unknown.

意外地 in 30 Seconds

  • An adverb meaning 'unexpectedly' or 'by accident,' used to describe events that fall outside of one's plans or predictions.
  • Formed by combining '意外' (unexpected) with the adverbial marker '地.' It must be placed before the verb it modifies.
  • Commonly used in storytelling, news, and daily life to highlight surprises, lucky finds, or sudden changes in circumstances.
  • Distinct from 'suddenly' (突然), as it focuses on the lack of anticipation rather than the speed or timing of the event.

The Chinese adverb 意外地 (yìwài de) is a fundamental tool for expressing the element of surprise or the occurrence of an event that falls outside the boundaries of one's expectations. At its core, the word is composed of three distinct characters: (意), meaning 'thought' or 'intention'; wài (外), meaning 'outside'; and the adverbial marker de (地). When combined, they literally translate to 'outside of intention,' which perfectly encapsulates the English concept of 'unexpectedly' or 'by accident.' This term is ubiquitous in both spoken and written Chinese, serving as a bridge between a mundane observation and a narrative twist. It is used when the speaker wants to emphasize that the outcome of an action was not planned, predicted, or even considered possible in the moments leading up to it.

The Essence of Surprise
In daily conversation, this word highlights the gap between reality and expectation. If you expect a sunny day but it rains, you might say it rained 'unexpectedly.' It adds a layer of human emotion and reaction to factual statements.
The Role of 'De' (地)
The inclusion of the particle 地 is what transforms the adjective 'unexpected' (意外) into the adverb 'unexpectedly.' This is a critical grammatical distinction for learners at the A2 level, as it dictates where the word sits in a sentence structure—typically before the verb it modifies.

他在公园里意外地遇到了他的老老师。

— He unexpectedly met his old teacher in the park.

The versatility of 意外地 allows it to be used in various registers. In a formal report, it might describe a sudden market shift; in a casual chat, it might describe finding a five-dollar bill in an old coat. The nuance is often neutral but can lean towards positive or negative depending on the verb it accompanies. For instance, 'unexpectedly winning' is positive, while 'unexpectedly failing' is negative. However, the word itself simply marks the deviation from the norm. Understanding this word requires an appreciation for the Chinese concept of '意' (intent), which is central to much of Chinese philosophy and linguistics. When something is 'outside' (外) of that intent, it disrupts the flow of the expected world, creating a moment worth noting with this specific adverb.

这个项目意外地提前完成了。

— This project was unexpectedly completed ahead of schedule.
Logical Contrast
It is often used to contrast the result of an action with the effort put in. If someone didn't study but passed, they passed 'unexpectedly.' This contrast is a key narrative device in Chinese storytelling.

Furthermore, 意外地 is distinct from similar adverbs like 'suddenly' (突然 - tūrán). While 'suddenly' focuses on the speed and timing of an event, 'unexpectedly' focuses on the lack of anticipation. You can have something happen slowly but still be 意外地 because you never thought it would happen at all. This distinction is vital for intermediate learners who are moving beyond basic descriptions into more nuanced emotional reporting. By using 意外地, you are telling your listener not just what happened, but how your mind perceived the likelihood of that event. It is a word of perspective, placing the speaker's internal expectations at the center of the narrative.

意外地发现了那封信。

— She unexpectedly discovered that letter.

价格意外地下降了。

— The price dropped unexpectedly.

In summary, 意外地 is more than just a translation of 'unexpectedly.' It is a reflection of the Chinese linguistic focus on intent and the external world. It allows speakers to categorize events as deviations from their mental maps. Whether you are describing a lucky encounter, a strange coincidence, or a surprising turn of events in a business deal, 意外地 provides the necessary context to show that you are just as surprised as your audience. Mastery of this word involves not just knowing its meaning, but feeling the 'outside-of-intent' nature it conveys in every sentence.

Using 意外地 (yìwài de) correctly requires a solid grasp of Chinese adverbial placement. Unlike English, where adverbs can often float to different parts of the sentence, Chinese adverbs are strictly disciplined. The standard formula is: Subject + Adverb (意外地) + Verb + Object. This structure ensures that the 'unexpectedness' modifies the action directly. If you are using a helping verb or a modal verb like 'can' (能) or 'should' (应该), 意外地 usually comes before the modal verb to indicate that the entire possibility was unexpected.

Placement Before the Verb
The most common mistake is placing the adverb at the end of the sentence. In Chinese, the manner of the action must be established before the action itself is named. For example, 'He arrived unexpectedly' must be 'He unexpectedly arrived.'

意外地拿到了第一名。

— He unexpectedly took first place.

Another important aspect is the use of the particle '地'. While in casual speech people might occasionally drop the '地' and just say '意外,' in formal writing and clear standard speech, the '地' is necessary to signal that the word is functioning as an adverb. Without '地,' '意外' could be interpreted as a noun (an accident) or an adjective (unexpected). For instance, '这是一个意外' (This is an accident) uses the noun form, whereas '他意外地来了' uses the adverbial form. This distinction is a hallmark of moving from beginner to intermediate proficiency.

我的手机意外地坏了。

— My phone unexpectedly broke.
Combining with Adjectives
When 意外地 modifies an adjective (e.g., 'unexpectedly good'), it often requires a linking verb like '变得' (become) or simply '很'. For example: '天气意外地变得很好' (The weather unexpectedly became very good).

In complex sentences involving time phrases, the time phrase usually comes before 意外地. For example, '昨天他意外地给我打了电话' (Yesterday he unexpectedly gave me a call). This keeps the chronological context clear before introducing the surprising nature of the action. Furthermore, when using negation, '不' or '没有' typically follows 意外地. For instance, '他意外地没有来' (He unexpectedly did not come). This emphasizes that the *absence* of the action was what was surprising, rather than a 'not-unexpected' occurrence.

这部电影意外地很好看。

— This movie was unexpectedly good (to watch).

他们意外地在上海见面了。

— They unexpectedly met in Shanghai.

Lastly, consider the emotional weight. 意外地 is a powerful storytelling tool. When you use it, you are signaling to your listener that they should pay attention because the 'script' of life was flipped. It creates a hook. By placing this adverb strategically, you can guide the listener's emotional response, making even simple events like finding a parking spot seem like a noteworthy event. As you practice, try to pair it with various verbs to see how it changes the flavor of the sentence—from 'unexpectedly eating' (maybe a free meal?) to 'unexpectedly sleeping' (falling asleep in class?). The possibilities are as varied as the surprises life throws your way.

In the real world, 意外地 (yìwài de) is a staple of narrative and descriptive Chinese. You will encounter it most frequently in news broadcasts, storytelling, and casual anecdotes. In news reporting, it is used to describe events that defy expert predictions or common sense. For example, a sports commentator might say a low-ranking team 'unexpectedly' defeated the champions. This adds drama and highlights the significance of the event. In these contexts, the word is spoken with a slight emphasis on the first syllable 'yì' to draw the listener's attention to the upcoming surprise.

News and Media
Journalists use it to report on economic shifts, political upsets, or scientific breakthroughs. 'The research results were unexpectedly positive' is a classic headline structure that uses this adverb to create intrigue.

股市意外地大幅上涨。

— The stock market unexpectedly rose significantly.

In the realm of entertainment, especially in Chinese dramas (C-dramas) and novels, 意外地 is a key plot device. Characters often discover 'unexpectedly' that they are related, or they 'unexpectedly' overhear a secret. It serves as the linguistic glue that holds a plot twist together. If you are watching a romantic drama, you might hear a character say, 'I unexpectedly fell in love with you' (我意外地爱上了你). Here, the word conveys a sense of fate or a lack of control over one's emotions, which is a highly romanticized concept in Chinese media.

他在路边意外地捡到了一个钱包。

— He unexpectedly picked up a wallet by the roadside.
Daily Conversations
In day-to-day life, people use it to explain why they are late or why they changed their plans. 'I unexpectedly had a meeting' is a polite way to justify a change in schedule. It shifts the blame from the person to the 'unexpected' event.

Furthermore, in academic or professional presentations, 意外地 is used to introduce data points that deviate from the hypothesis. It shows that the speaker is observant and analytical. For example, 'We found that the user engagement was unexpectedly high in this age group.' This usage is very common in business meetings where results are being analyzed. It allows the speaker to pivot from what was expected to what actually happened without sounding like they were wrong, but rather that the reality was surprising.

实验结果意外地证实了他的理论。

— The experimental results unexpectedly confirmed his theory.

面试官意外地问了一个很难的问题。

— The interviewer unexpectedly asked a very difficult question.

In summary, whether you are reading a newspaper, watching a soap opera, or chatting with a colleague, 意外地 is the word that signals a break in the routine. It is a marker of the unpredictable nature of life. By listening for this word, you can quickly identify the 'turning point' in any story or report. It is one of the most useful adverbs for adding color and depth to your understanding of Chinese communication, as it bridges the gap between what we think will happen and what actually does.

Learning to use 意外地 (yìwài de) involves navigating several common pitfalls that English speakers often encounter. The first and most frequent mistake is incorrect placement within the sentence. In English, we are accustomed to saying things like 'He smiled unexpectedly' or 'The rain started unexpectedly,' where the adverb comes at the end. However, in Chinese, the adverb must precede the verb. Saying '他笑了意外地' is grammatically incorrect and will sound very jarring to a native speaker. The correct form is '他意外地笑了.'

Confusing Noun and Adverb
Another common error is failing to distinguish between 意外 (yìwài) as a noun/adjective and 意外地 (yìwài de) as an adverb. If you say '这是一个意外地' (This is an unexpectedly), it makes no sense because you need a noun there. Conversely, if you say '他意外发现了' (He unexpectedly discovered), it is acceptable in casual speech, but omitting the '地' in formal writing is a mistake.

错误:他发现了一个秘密意外地
正确:他意外地发现了一个秘密。

— Mistake: Placement at the end. Correct: Placement before the verb.

A third mistake involves the confusion between 意外地 and 突然 (tūrán - suddenly). While they are related, they are not interchangeable. 突然 emphasizes the speed and abruptness of an event, while 意外地 emphasizes that the event was not expected. For example, if you have been waiting for someone for hours and they finally show up, their arrival is not 'sudden' (you knew they were coming eventually), but if a person you didn't even invite shows up, that is 意外地. Using 突然 when you mean 意外地 can lead to a misunderstanding of your emotional state or the nature of the event.

错误:他意外地赢了,因为他跑得很快。
正确:他突然加速,最后赢了。

— If the focus is on the speed of the win, use 'suddenly.' If the focus is on the surprise of the win, use 'unexpectedly.'
Negation Placement
Learners often struggle with where to put '不' (bù) or '没有' (méiyǒu). In most cases, 意外地 precedes the negation. For example, '他意外地没来' (He unexpectedly didn't come). Placing the negation before the adverb ('他不意外地来') is very rare and usually grammatically incorrect in standard contexts.

Finally, overusing 意外地 is a common trait of intermediate learners. While it is a great word, using it in every sentence to describe minor surprises can make your speech sound repetitive and slightly dramatic. Native speakers often use other structures like '没想到' (méi xiǎngdào - didn't think/expect) or '竟然' (jìngrán - unexpectedly/to one's surprise) to vary their expression. '没想到他来了' is often more natural in casual conversation than '他意外地来了.' Learning when to use these alternatives will help your Chinese sound more fluid and less like a translated textbook.

错误:我意外地想吃苹果。
正确:我突然想吃苹果。

— Desires and cravings are usually 'sudden,' not 'unexpected' in the sense of 意外地.

By being mindful of these five common errors, you can use 意外地 with confidence and precision. Remember that language learning is about more than just vocabulary; it is about understanding the structural and cultural rules that govern how those words are deployed. Pay attention to how native speakers use this word in context, and you will soon find yourself using it like a pro.

While 意外地 (yìwài de) is a versatile and commonly used adverb, the Chinese language offers a rich palette of alternatives that can provide more specific nuances or fit different registers. Understanding these synonyms will allow you to express 'unexpectedness' with greater precision and variety. The most common alternatives are 竟然 (jìngrán), 居然 (jūrán), 没想到 (méi xiǎngdào), and 不料 (bùliào). Each of these carries a slightly different emotional weight or formal tone.

竟然 (jìngrán) vs. 意外地
竟然 is perhaps the closest synonym, but it carries a stronger sense of 'to one's surprise' or even disbelief. While 意外地 is a neutral description of an unexpected event, 竟然 implies that the speaker finds the event particularly remarkable or hard to believe. For example, '他竟然赢了' suggests 'I can't believe he won,' whereas '他意外地赢了' simply states 'He unexpectedly won.'
居然 (jūrán)
居然 is very similar to 竟然 but is often used to express a sense of 'unexpectedly' that borders on the ironic or the paradoxical. It is frequently used when something happens that shouldn't have happened, or when a person does something contrary to their character.

没想到:没想到今天会下雨。
意外地:今天意外地下雨了。

— '没想到' is a verb phrase ('didn't think'), while '意外地' is an adverb. '没想到' is much more common in casual conversation.

Another important distinction is 不料 (bùliào). This is a more formal or literary term, often used in written narratives or news reports. It literally means 'not anticipated.' It is typically used to introduce a negative or disadvantageous turn of events. For instance, 'He planned to go out, but unexpectedly (不料) it started to rain.' Using 意外地 in this context would also be correct, but 不料 adds a more sophisticated, storytelling flavor to the sentence.

偶然 (ǒurán):我偶然在街上遇到了他。

— 偶然 means 'by chance' or 'accidentally.' It is often used for social encounters or random events, whereas 意外地 is broader.
突然 (tūrán) vs. 意外地
As discussed previously, 突然 focuses on the speed and suddenness of the action. If a car stops 'suddenly,' it is 突然. If a car 'unexpectedly' stops (maybe it's a brand new car that shouldn't break down), it is 意外地. The two can overlap, but their focus remains distinct.

Finally, there is 出乎意料 (chūhū yìliào), which is a four-character idiom (chengyu) that means 'exceeding expectations.' This is a more formal and emphatic way to say 'unexpectedly.' It is often used as a predicate or an adjective. For example: '这个结果出乎意料' (This result was beyond expectations). Using this idiom shows a higher level of Chinese proficiency and is very common in professional and academic settings. By learning these alternatives, you can move beyond the basic 'unexpectedly' and start expressing the specific flavor of the surprise you are describing.

猛然 (měngrán):他猛然想起了一件事。

— 猛然 means 'suddenly and forcefully.' It is more intense than 意外地 and is used for sudden realizations or physical actions.

In conclusion, while 意外地 is your reliable 'go-to' word for 'unexpectedly,' don't be afraid to experiment with these alternatives. Each one offers a unique perspective on the element of surprise, and using them correctly will make your Chinese sound more natural, expressive, and sophisticated. As you continue your language journey, pay attention to which of these words native speakers choose in different situations, and try to incorporate them into your own speech and writing.

How Formal Is It?

Fun Fact

The character '意' (yì) contains the 'heart' (心) radical at the bottom, suggesting that in ancient times, 'thought' was seen as something that came from the heart, not just the brain.

Pronunciation Guide

UK /jiː waɪ də/
US /ji waɪ də/
The primary stress is on the first syllable 'yì,' with a secondary emphasis on 'wài.' The 'de' is completely unstressed.
Rhymes With
意外 (yìwài) rhymes with 期待 (qīdài) 意外 (yìwài) rhymes with 替代 (tìdài) 意外 (yìwài) rhymes with 时代 (shídài) 意外 (yìwài) rhymes with 依赖 (yīlài) 意外 (yìwài) rhymes with 损害 (sǔnhài) 意外 (yìwài) rhymes with 之外 (zhīwài) 意外 (yìwài) rhymes with 以外 (yǐwài) 意外 (yìwài) rhymes with 膝盖 (xīgài)
Common Errors
  • Pronouncing 'de' with a falling tone (like 'dì'). It should be neutral.
  • Not making the falling tones (4th tone) sharp enough.
  • Confusing 'wài' with 'wēi'.
  • Merging the three syllables into a single blur; they should be distinct.
  • Failing to pause slightly after 'yìwài' before the verb.

Difficulty Rating

Reading 2/5

The characters are common, but the '地' particle requires understanding of adverbial structures.

Writing 3/5

Writing '意外' requires remembering several strokes, and placement in a sentence is key.

Speaking 2/5

The two 4th tones (yìwài) are easy to pronounce but require clarity.

Listening 2/5

Easily recognizable in context due to the distinct 'yìwài' sound.

What to Learn Next

Prerequisites

意 (yì - meaning/intent) 外 (wài - outside) 地 (de - adverbial particle) 发现 (fāxiàn - to find) 突然 (tūrán - suddenly)

Learn Next

竟然 (jìngrán - unexpectedly/actually) 居然 (jūrán - surprisingly) 没想到 (méi xiǎngdào - didn't expect) 偶然 (ǒurán - by chance) 意料 (yìliào - expectation)

Advanced

出乎意料 (chūhū yìliào - beyond expectations) 不期而遇 (bù qī ér yù - to meet by chance) 措手不及 (cuò shǒu bù jí - caught off guard) 缘分 (yuánfèn - fate)

Grammar to Know

Adverbial Marker '地'

他高兴地跳了起来。(He happily jumped up.)

Placement of Adverbs before Verbs

我们慢慢地走。(We walk slowly.)

Negation with '没有' for past events

他意外地没有来。(He unexpectedly didn't come.)

Resultative Complements

我意外地买到了票。(I unexpectedly bought the ticket.)

Using '很' with Adjectives

今天意外地很热。(Today is unexpectedly very hot.)

Examples by Level

1

他意外地看见了朋友。

He unexpectedly saw a friend.

Subject + Adverb + Verb + Object.

2

我意外地找到了十块钱。

I unexpectedly found ten dollars.

意外地 modifies the verb 找到 (found).

3

今天意外地下雨了。

It unexpectedly rained today.

Time word (今天) + Adverb + Verb.

4

她意外地买到了票。

She unexpectedly bought the ticket.

意外地 comes before the resultative verb 买到.

5

老师意外地没来上课。

The teacher unexpectedly didn't come to class.

意外地 + Negation (没) + Verb.

6

这杯咖啡意外地很好喝。

This cup of coffee is unexpectedly delicious.

意外地 + Adjective (很好喝).

7

他们意外地在超市见面了。

They unexpectedly met in the supermarket.

意外地 + Prepositional phrase (在超市) + Verb.

8

小猫意外地跳上了桌子。

The kitten unexpectedly jumped onto the table.

Focus on the surprise of the action.

1

他在路上意外地丢了钥匙。

He unexpectedly lost his keys on the road.

意外地 describes the manner of losing the keys.

2

考试题目意外地很简单。

The exam questions were unexpectedly simple.

Unexpectedly modifying the adjective 'simple'.

3

我们意外地提前完成了工作。

We unexpectedly finished the work early.

意外地 + 提前 (ahead of time) + Verb.

4

他意外地收到了一份礼物。

He unexpectedly received a gift.

Common usage with 'receive' (收到).

5

那家饭馆意外地关门了。

That restaurant unexpectedly closed.

Focus on the lack of anticipation of the closure.

6

这个手机意外地很便宜。

This phone is unexpectedly cheap.

Modifying a state (being cheap).

7

他意外地学会了游泳。

He unexpectedly learned how to swim.

Indicates the result was not planned or expected.

8

公交车意外地晚点了半小时。

The bus was unexpectedly late by half an hour.

意外地 modifying the verb 晚点 (be late).

1

这个项目的成功意外地引起了关注。

The success of this project unexpectedly attracted attention.

Abstract subject and more complex verb.

2

他意外地发现自己有画画的天赋。

He unexpectedly discovered he had a talent for drawing.

意外地 + 发现 (discover) + clause.

3

价格意外地波动得很厉害。

Prices unexpectedly fluctuated wildly.

Adverb modifying a verb-complement structure.

4

两家公司意外地达成了合作协议。

The two companies unexpectedly reached a cooperation agreement.

More formal vocabulary (达成, 协议).

5

他意外地在旧书里发现了一张照片。

He unexpectedly found a photo in an old book.

Focus on the serendipity of the find.

6

由于天气原因,飞机意外地返航了。

Due to weather, the plane unexpectedly turned back.

Using 'due to' (由于) to provide context.

7

他的话意外地触动了我的心。

His words unexpectedly touched my heart.

Metaphorical usage of the verb 触动.

8

这个老旧的机器意外地还能用。

This old machine unexpectedly still works.

意外地 + 还能 (still can) + Verb.

1

实验结果意外地推翻了之前的假设。

The experimental results unexpectedly overturned the previous hypothesis.

Academic context with formal verbs (推翻, 假设).

2

股市在经历下跌后意外地反弹了。

The stock market unexpectedly rebounded after experiencing a decline.

Financial context with industry-specific terms (反弹).

3

他意外地被选为该组织的主席。

He was unexpectedly elected as the chairman of the organization.

Passive structure (被) with 意外地.

4

这位作家的处女作意外地获得了大奖。

This writer's debut work unexpectedly won a major award.

Using 'debut work' (处女作) and 'major award' (大奖).

5

尽管准备不足,他却意外地表现出色。

Despite insufficient preparation, he performed unexpectedly well.

Contrastive structure using 尽管...却.

6

这种罕见的植物意外地在北方存活了。

This rare plant unexpectedly survived in the north.

Scientific/Biological context.

7

他在演讲中意外地透露了那个秘密。

He unexpectedly revealed that secret during his speech.

Focus on the accidental nature of the revelation.

8

这项政策意外地得到了民众的支持。

This policy unexpectedly gained the support of the public.

Political/Social context.

1

这次外交访问意外地缓解了两国间的紧张局势。

This diplomatic visit unexpectedly eased the tensions between the two countries.

High-level political vocabulary (外交, 缓解, 紧张局势).

2

作者在结尾处意外地安排了一个悲剧性的反转。

The author unexpectedly arranged a tragic twist at the end.

Literary analysis context.

3

他的研究意外地填补了该领域的学术空白。

His research unexpectedly filled an academic gap in the field.

Formal academic idiom (填补...空白).

4

这项技术意外地在医疗领域找到了新的用途。

This technology unexpectedly found new uses in the medical field.

Focus on cross-disciplinary innovation.

5

在漫长的等待后,机会意外地降临了。

After a long wait, the opportunity unexpectedly arrived.

Poetic/Metaphorical usage of 'descend' (降临).

6

他意外地发现,这种简单的物质竟有如此大的威力。

He unexpectedly discovered that this simple substance had such great power.

Complex clause structure with '竟' for added emphasis.

7

这场辩论意外地演变成了一场激烈的争吵。

The debate unexpectedly evolved into a heated argument.

Describing the 'evolution' (演变成) of a situation.

8

由于一个微小的失误,计划意外地全盘崩溃了。

Due to a tiny mistake, the plan unexpectedly collapsed entirely.

Using 'entirely' (全盘) for emphasis.

1

宇宙的起源或许比我们想象的更为意外地简单。

The origin of the universe may be more unexpectedly simple than we imagine.

Philosophical/Scientific speculation.

2

这种艺术风格意外地融合了古典与现代的精髓。

This artistic style unexpectedly fused the essence of classical and modern.

Artistic criticism/Formal register.

3

在法律的灰色地带,正义有时会意外地缺席。

In the gray areas of the law, justice can sometimes be unexpectedly absent.

Legal/Ethical context with abstract subjects.

4

他那看似随意的举动,意外地引发了一场社会变革。

His seemingly casual gesture unexpectedly triggered a social transformation.

Sociological analysis.

5

历史的进程往往在偶然与必然之间意外地摆动。

The course of history often swings unexpectedly between chance and necessity.

Historiographical discourse.

6

这种深奥的哲学思想,意外地在普通民众中产生了共鸣。

This profound philosophical thought unexpectedly resonated among the general public.

Discussing intellectual impact.

7

在高度自动化的时代,人性的光辉依然会意外地闪耀。

In an era of high automation, the brilliance of humanity still shines unexpectedly.

Cultural/Humanistic reflection.

8

尽管逻辑严密,该理论在实践中却意外地漏洞百出。

Despite its rigorous logic, the theory was unexpectedly full of loopholes in practice.

Critical academic analysis.

Common Collocations

意外地发现
意外地得到
意外地成功
意外地相遇
意外地发生
意外地获得
意外地延迟
意外地好
意外地简单
意外地坏了

Common Phrases

出人意外地

— In a way that exceeds everyone's expectations. Used for very surprising events.

他出人意外地辞职了。

意外地契合

— Unexpectedly well-matched or fitting. Used for ideas or people.

这两个想法意外地契合。

意外地安静

— Unexpectedly quiet. Often used to describe a place or a person's behavior.

教室里意外地安静。

意外地顺利

— Unexpectedly smooth. Used when a process goes better than planned.

这次旅行意外地顺利。

意外地合身

— Unexpectedly well-fitting. Usually used for clothing.

这件衣服意外地合身。

意外地受欢迎

— Unexpectedly popular. Used for products, people, or ideas.

这个小游戏意外地受欢迎。

意外地冷静

— Unexpectedly calm. Used to describe someone's reaction to a crisis.

他在事故中意外地冷静。

意外地准时

— Unexpectedly punctual. Used when someone who is usually late arrives on time.

他今天意外地准时。

意外地合胃口

— Unexpectedly to one's taste. Used for food or experiences.

这里的菜意外地合我的胃口。

意外地大

— Unexpectedly large. Used for size, scale, or impact.

这个房间意外地大。

Often Confused With

意外地 vs 突然 (tūrán)

突然 means 'suddenly' (speed), while 意外地 means 'unexpectedly' (surprise). A slow rain can be 意外地 but not 突然.

意外地 vs 意外 (yìwài)

Without '地', it is a noun meaning 'accident.' '出意外' means 'to have an accident.'

意外地 vs 居然 (jūrán)

居然 expresses a stronger sense of disbelief or that something is contrary to logic.

Idioms & Expressions

"出乎意料"

— Beyond expectation. This is the most common idiom related to 意外.

比赛结果出乎意料。

Formal
"意想不到"

— Unthinkable or unimaginable. Similar to 意外 but stronger.

他遇到了意想不到的困难。

Neutral
"节外生枝"

— Unexpected complications. Literally 'branches growing from nodes.'

我们本想快点结束,谁知又节外生枝。

Formal
"平地一声雷"

— A sudden, unexpected event. Literally 'a clap of thunder from flat ground.'

这个消息对他来说简直是平地一声雷。

Literary
"突如其来"

— Sudden and unexpected. Often used for disasters or sudden changes.

突如其来的大雨打乱了计划。

Neutral
"半路杀出个程咬金"

— Someone who appears unexpectedly and disrupts plans.

我们快谈成时,半路杀出个程咬金。

Informal
"歪打正着"

— To succeed by accident. Literally 'to hit the mark with a crooked shot.'

他本想随便写写,结果歪打正着,得了奖。

Informal
"天有不测风云"

— Unexpected things happen. Literally 'the sky has unpredictable winds and clouds.'

天有不测风云,人有旦夕祸福。

Literary
"防不胜防"

— Impossible to defend against (because it is so unexpected).

这些小偷的行为真是让人防不胜防。

Neutral
"措手不及"

— To be caught off guard by an unexpected event.

突然的消息让他措手不及。

Neutral

Easily Confused

意外地 vs 竟然 (jìngrán)

Both mean unexpectedly.

竟然 is more emotional and expresses shock. 意外地 is more descriptive and neutral.

他竟然偷了钱! vs 他意外地发现了钱。

意外地 vs 偶然 (ǒurán)

Both relate to things not being planned.

偶然 means 'by chance' or 'randomly.' 意外地 means 'contrary to expectations.'

我偶然遇见他。 vs 他意外地没来。

意外地 vs 猛然 (měngrán)

Both describe things happening suddenly.

猛然 is more intense and usually describes a sudden mental realization or a sharp physical movement.

他猛然回头。

意外地 vs 突然 (tūrán)

Both imply surprise.

突然 focuses on the immediate timing. 意外地 focuses on the fact that the event wasn't anticipated.

突然停电了。

意外地 vs 不料 (bùliào)

Both mean unexpectedly.

不料 is used mostly in formal writing and often introduces a negative outcome.

本想去公园,不料下雨了。

Sentence Patterns

A1

S + 意外地 + V

他意外地来了。

A2

S + 意外地 + V + O

我意外地找到了钥匙。

B1

S + 意外地 + 没有 + V

他意外地没有参加会议。

B1

S + 意外地 + 变得 + Adj

天气意外地变得很好。

B2

虽然...但 + S + 意外地 + V

虽然很难,但他意外地成功了。

C1

意外地 + 发现 + Clause

他意外地发现,原来他一直都错了。

C1

S + 意外地 + 获得/达成 + O

公司意外地达成了合作。

C2

意外地 + 融合/体现 + O

这种设计意外地融合了多种风格。

Word Family

Nouns

意外 (yìwài - accident/surprise)
意料 (yìliào - expectation)

Verbs

意料 (yìliào - to expect/anticipate)

Adjectives

意外的 (yìwài de - unexpected)
意料之外的 (yìliào zhī wài de - beyond expectations)

Related

意义 (yìyì - meaning)
意见 (yìjiàn - opinion)
外国 (wàiguó - foreign country)
外面 (wàimiàn - outside)
地球 (dìqiú - earth)

How to Use It

frequency

Very high in both written and spoken Chinese.

Common Mistakes
  • 他来了意外地。 他意外地来了。

    Adverbs must precede the verb in Chinese grammar. Placing it at the end is an English-style error.

  • 我意外地想吃苹果。 我突然想吃苹果。

    Cravings and sudden thoughts are usually 'sudden' (突然), not 'unexpected' (意外地).

  • 这是一个意外地。 这是一个意外。

    Here, you need a noun ('accident'), not an adverb ('unexpectedly'). Drop the '地'.

  • 他不意外地来。 他意外地没来。

    To say someone unexpectedly didn't come, put the negation after the adverb.

  • 他意外地跑得很快。 他竟然跑得很快。

    If you are expressing shock that he is fast, '竟然' is more natural than '意外地'.

Tips

Placement is Key

Always remember the S-Adv-V-O order. The adverb '意外地' must sit before the verb.

Noun vs Adverb

Don't confuse '意外' (accident) with '意外地' (unexpectedly). Use the '地' to be safe.

Neutral Tone

Use it for both good and bad surprises. It's a very versatile word.

Emphasis

Put a little more stress on 'yì' to show you are truly surprised.

Formal Register

In essays, '意外地' sounds more professional than '没想到'.

Identify Twists

When you hear '意外地' in a story, a plot twist is coming!

意外地 vs 突然

Remember: 'Unexpectedly' (surprise) vs 'Suddenly' (speed).

Upgrade to Chengyu

Try using '出乎意料' in formal situations to sound more advanced.

Daily Journal

Try to find one 'unexpected' thing that happened each day and write it down.

Fate and Surprise

In China, unexpected meetings are often called '缘分' (fate).

Memorize It

Mnemonic

Think of '意' (yì) as your 'Idea' and '外' (wài) as 'Outside.' If something is 'Outside' your 'Idea,' it is 意外 (unexpected). Add '地' to make it an adverb.

Visual Association

Imagine a circle representing your plans. Now imagine a small star popping up outside that circle. That star is '意外地' — it wasn't in the plan!

Word Web

意 (Thought) 外 (Outside) 地 (Adverb Marker) 发现 (Discover) 惊喜 (Surprise) 突然 (Suddenly) 竟然 (Actually) 成功 (Success)

Challenge

Try to write three sentences about your last vacation using '意外地' to describe things that didn't go according to plan.

Word Origin

The term is composed of '意' (yì), meaning mind, intent, or thought, and '外' (wài), meaning outside. This combination dates back to classical Chinese texts where it described things occurring beyond one's mental anticipation. The addition of '地' (de) as an adverbial marker is a more modern linguistic development, becoming standardized in the early 20th century during the New Culture Movement.

Original meaning: Outside of one's thoughts or intentions.

Sino-Tibetan

Cultural Context

Generally a neutral term, but be careful using it to describe people's achievements if it might sound like you didn't think they were capable of succeeding.

In English, we often use 'by accident' for negative things and 'unexpectedly' for neutral/positive things. In Chinese, 意外地 is used for both.

The phrase '意料之外,情理之中' (Beyond expectations, but within reason) is a famous literary principle. Many C-dramas use '意外地相遇' (unexpected encounter) as a central trope. Scientific discoveries in China are often reported as happening '意外地' to highlight the serendipity of the lab.

Practice in Real Life

Real-World Contexts

Daily Life

  • 意外地迟到
  • 意外地遇到朋友
  • 意外地发现好吃的
  • 意外地丢了东西

Work/Business

  • 意外地达成协议
  • 意外地获得好评
  • 意外地提前完成
  • 意外地出现问题

Travel

  • 意外地迷路
  • 意外地发现美景
  • 意外地天气变好
  • 意外地错过班车

School/Study

  • 意外地考得好
  • 意外地学会了
  • 意外地没作业
  • 意外地拿了第一

Social Media

  • 意外地火了
  • 意外地好用
  • 意外地出片
  • 意外地被关注

Conversation Starters

"你最近有没有意外地发现什么好吃的餐厅? (Have you unexpectedly discovered any good restaurants recently?)"

"你有没有意外地遇到过很久没见的朋友? (Have you ever unexpectedly met a friend you haven't seen in a long time?)"

"在你的旅行中,有没有发生过什么意外地惊喜? (In your travels, has anything unexpectedly surprising happened?)"

"你曾经意外地学会了什么新技能吗? (Have you ever unexpectedly learned a new skill?)"

"今天有没有什么事情是意外地发生的? (Did anything happen unexpectedly today?)"

Journal Prompts

写一写你上一次意外地捡到东西的经历。(Write about the last time you unexpectedly picked something up.)

描述一个你意外地获得成功的时刻。(Describe a moment when you unexpectedly achieved success.)

如果你意外地得到了一大笔钱,你会做什么? (If you unexpectedly received a large sum of money, what would you do?)

谈谈一次你意外地发现自己错了的经历。(Talk about an experience where you unexpectedly found out you were wrong.)

写一次意外地旅行经历。(Write about an unexpected travel experience.)

Frequently Asked Questions

10 questions

No, you cannot. In Chinese, adverbs must come before the verb. For example, 'He arrived unexpectedly' should be translated as '他意外地到了' (Tā yìwài de dào le).

意外 is a noun meaning 'accident' or an adjective meaning 'unexpected.' 意外地 is an adverb meaning 'unexpectedly.' For example, '这是一个意外' (This is an accident) vs '他意外地赢了' (He unexpectedly won).

No, it is neutral. You can have an 'unexpectedly' good result or an 'unexpectedly' bad one. The context of the verb determines the tone.

In casual spoken Chinese, people sometimes say '他意外赢了,' but it is better to include '地' to be grammatically clear, especially in writing.

You would usually say '不出所料' (bù chū suǒ liào), which means 'as expected' or 'not surprising.'

In casual conversation, '没想到' is more common (e.g., '没想到他来了'). In formal writing or storytelling, '意外地' is more frequent.

Yes, it can. For example, '意外地好' (unexpectedly good) or '意外地贵' (unexpectedly expensive).

The most common opposite is '故意' (gùyì), which means 'on purpose' or 'deliberately.'

Yes, very often. It is used to describe market shifts, political changes, or scientific results that weren't predicted.

It can, but it usually just means 'unexpectedly.' If you want to say something happened 'by accident' (like dropping a glass), you can also use '不小心' (bù xiǎoxīn).

Test Yourself 185 questions

writing

Write a sentence using '意外地' and '朋友'.

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writing

Translate: 'He unexpectedly won the game.'

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writing

Write a sentence about unexpectedly finding money.

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writing

Translate: 'The weather unexpectedly became cold.'

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writing

Write a sentence about an unexpected discovery at work.

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writing

Translate: 'They unexpectedly agreed to the plan.'

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writing

Write a sentence using '意外地' and '没有'.

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writing

Translate: 'The experimental results were unexpectedly good.'

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writing

Write a short story (3 sentences) using '意外地' once.

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writing

Translate: 'The price rose unexpectedly.'

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writing

Write a sentence about an unexpected meeting in a foreign city.

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writing

Translate: 'The movie was unexpectedly interesting.'

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writing

Write a sentence about an unexpected gift.

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writing

Translate: 'He unexpectedly became the manager.'

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writing

Write a sentence about unexpectedly learning something.

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writing

Translate: 'The bus unexpectedly broke down.'

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writing

Write a sentence using '意外地' and '成功'.

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writing

Translate: 'He unexpectedly revealed his secret.'

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writing

Write a sentence about an unexpected phone call.

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writing

Translate: 'The results were beyond expectations.' (Use 意外地)

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speaking

Say 'He unexpectedly arrived' in Chinese.

Read this aloud:

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speaking

Say 'It unexpectedly rained today' in Chinese.

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speaking

Say 'I unexpectedly found money' in Chinese.

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speaking

Say 'The food is unexpectedly good' in Chinese.

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speaking

Say 'He unexpectedly didn't come' in Chinese.

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speaking

Say 'We unexpectedly met in Shanghai' in Chinese.

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speaking

Say 'The exam was unexpectedly easy' in Chinese.

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speaking

Say 'I unexpectedly lost my keys' in Chinese.

Read this aloud:

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speaking

Say 'He unexpectedly won the race' in Chinese.

Read this aloud:

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speaking

Say 'The project unexpectedly finished early' in Chinese.

Read this aloud:

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speaking

Say 'She unexpectedly received a gift' in Chinese.

Read this aloud:

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speaking

Say 'The price unexpectedly dropped' in Chinese.

Read this aloud:

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speaking

Say 'I unexpectedly found a secret' in Chinese.

Read this aloud:

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speaking

Say 'He unexpectedly became a teacher' in Chinese.

Read this aloud:

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speaking

Say 'The bus was unexpectedly late' in Chinese.

Read this aloud:

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speaking

Say 'It was an unexpected result' using the noun form.

Read this aloud:

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speaking

Say 'I unexpectedly realized I was wrong' in Chinese.

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speaking

Say 'The phone unexpectedly broke' in Chinese.

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speaking

Say 'They unexpectedly agreed' in Chinese.

Read this aloud:

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speaking

Say 'I unexpectedly like this place' in Chinese.

Read this aloud:

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listening

Listen and identify the adverb: '他意外地拿到了第一名。'

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listening

Listen: '今天天气意外地很凉快。' How is the weather?

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listening

Listen: '我意外地在路上遇到了老王。' Who did he meet?

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listening

Listen: '这个消息意外地传开了。' What happened to the news?

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listening

Listen: '他意外地放弃了这次机会。' Did he take the opportunity?

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listening

Listen: '结果意外地令人满意。' Was the result good?

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listening

Listen: '他意外地在这儿住了下来。' Did he plan to stay?

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listening

Listen: '钱包意外地丢了。' What was lost?

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listening

Listen: '他意外地考上了那所大学。' Did he get into college?

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listening

Listen: '会议意外地延长了一个小时。' How much longer was the meeting?

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listening

Listen: '他意外地发现那本书是假的。' What was wrong with the book?

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listening

Listen: '这种花意外地在冬天开了。' When did the flower bloom?

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listening

Listen: '他意外地得到了老板的夸奖。' What did the boss do?

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listening

Listen: '他们意外地在同一个城市工作。' Where do they work?

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listening

Listen: '这个小游戏意外地很有趣。' Is the game boring?

Correct! Not quite. Correct answer:
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/ 185 correct

Perfect score!

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