A2 Pinyin & Tones 16 min read Easy

Tone Changes - 3rd Tone Combination

Two 3rd tones back-to-back always make the first one sound like a 2nd tone — write nǐ hǎo, say ní hǎo.
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Grammar Rule in 30 Seconds

When two 3rd tones meet, the first one changes to a 2nd tone to make speaking smoother.

  • 3rd + 3rd = 2nd + 3rd (e.g., {你好|nǐ hǎo} → {ní hǎo})
  • The second tone remains unchanged in its original pitch.
  • This rule applies even across word boundaries in fast speech.
3rd Tone + 3rd Tone = 2nd Tone + 3rd Tone

Overview

The 3rd tone combination rule (or third tone sandhi) is a fundamental aspect of spoken Mandarin Chinese. It dictates a mandatory change in pronunciation when two full third tone syllables appear consecutively. This isn't an optional stylistic choice; it's an automatic, unconscious phonetic adjustment that native speakers make for ease of articulation.

At its core, this rule addresses the inherent difficulty of pronouncing two consecutive low-dipping (third) tones. The third tone involves a dip in pitch, starting mid, going low, and then rising slightly. Repeating this 'dip-dip' pattern is phonetically cumbersome.

To simplify, the first of the two third tones transforms into a second tone, which is a rising tone (low to high pitch). This creates a smoother, more natural flow in speech.

Crucially, this tone change applies only to pronunciation and never to the written pinyin. The underlying, or lexical, tones (the ones you find in dictionaries and pinyin spellings) remain unchanged. For example, 你好 is always written nǐ hǎo, but consistently pronounced ní hǎo.

This distinction between written form and spoken reality is vital for learners to grasp, as it impacts both recognition and production.

Understanding the 3rd tone combination rule is paramount for achieving natural-sounding Mandarin. Neglecting it often leads to speech that sounds robotic, unnatural, and difficult for native speakers to process. It is one of the earliest and most frequently encountered tone sandhi rules, making its mastery essential even at the A2 CEFR level.

How This Grammar Works

The 3rd tone combination rule is deceptively simple in its primary form: when one third tone syllable is immediately followed by another third tone syllable, the first one changes to a second tone in speech. This creates a 2nd tone + 3rd tone sequence from an original 3rd tone + 3rd tone pairing.
The Basic Rule:
3rd tone + 3rd tone → 2nd tone + 3rd tone (in speech)
Consider the common greeting 你好 (nǐ hǎo). Both characters, 你 and 好, are intrinsically third tone. However, when spoken together, 你 takes on a second tone, resulting in the pronunciation ní hǎo. The original pinyin nǐ hǎo is never altered in writing or in dictionary entries.
This rule operates seamlessly, irrespective of whether the syllables form a single word or span across word boundaries within a phrase. For example:
  • Within a compound word: 可以 (kěyǐ, meaning 'can' or 'may') is pronounced kéyǐ. Here, 可 changes from third to second tone.
  • Across words: 我好 (wǒ hǎo, meaning 'I am fine') is pronounced wó hǎo. The 我 changes to a second tone because it precedes 好.
  • Within a phrase: 我也 (wǒ yě, meaning 'I also' or 'me too') becomes wó yě. Both 我 and 也 are third tone syllables.
Chains of Three or More Consecutive Third Tones
The rule extends and becomes more nuanced when three or more third tone syllables occur in sequence. Here, the sandhi applies recursively, and the specific pattern of tone change often depends on the natural rhythm and semantic grouping of the phrase. It’s not a rigid left-to-right application but rather influenced by how a speaker would naturally group the words for meaning.
Generally, in a sequence of 3rd + 3rd + 3rd, the most common pattern is for the first two syllables to change, treating the first two as a unit. This means A (3rd) + B (3rd) + C (3rd) typically becomes A (2nd) + B (2nd) + C (3rd).
Let’s take the phrase 我很好 (wǒ hěn hǎo, meaning 'I am very good/fine'). All three syllables are originally third tone:
  • 我 (wǒ) - 3rd tone
  • 很 (hěn) - 3rd tone
  • 好 (hǎo) - 3rd tone
In natural speech, this phrase is usually pronounced wó hén hǎo. Here, both 我 and 很 have changed to a second tone. This suggests a grouping like [我 很] 好, where 我 changes due to 很, and then 很 effectively changes due to 好 (or more accurately, the 3rd + 3rd rule applies first to 我很, then conceptually to the result (2nd) + 3rd + 3rd).
However, it's possible, though less common, for the grouping to be 我 [很 好], which would result in wǒ hén hǎo. The first 我 does not change because it is followed by a 2nd tone 很 (after 很 changes due to 好). This highlights that meaning and rhythmic emphasis often dictate how these longer chains resolve.
For most practical purposes at the A2 level, learners should primarily focus on the two-syllable rule. For longer sequences, native speakers often instinctively group words, and the sandhi follows these groupings. The most common resolution for three 3rd tones is 2nd + 2nd + 3rd because speakers tend to articulate in two-syllable units.

Formation Pattern

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The 3rd tone combination rule provides a predictable and consistent shift in pronunciation. While the underlying written pinyin remains constant, the spoken form adapts for phonetic fluency. This section will detail the typical patterns, starting with the fundamental two-syllable combination and then addressing longer sequences.
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Core Pattern: Two Consecutive 3rd Tones
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When two syllables, both carrying a third tone, occur side-by-side, the first one always changes to a second tone. This is the bedrock of the rule.
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| Original Pinyin (Written) | Spoken Pronunciation | English Meaning |
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| :------------------------ | :------------------- | :-------------------- |
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| nǐ hǎo (你 好) | ní hǎo | hello (you good) |
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| kě yǐ (可 以) | ké yǐ | can, may |
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| yě xǔ (也 许) | yé xǔ | perhaps, maybe |
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| suǒ yǐ (所 以) | suó yǐ | so, therefore |
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| xǐ zǎo (洗 澡) | xí zǎo | to take a bath/shower |
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| dǎ rǎo (打 扰) | dá rǎo | to disturb |
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| gǔ lǎo (古 老) | gú lǎo | ancient |
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Notice that the changed tone is explicitly marked in the 'Spoken Pronunciation' column, reflecting the actual sound, while the 'Original Pinyin' column preserves the lexical tones. It is critical never to confuse these two forms.
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Pattern: Three Consecutive 3rd Tones
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When three or more third tone syllables are strung together, the sandhi applies according to perceived semantic units and rhythmic flow. The most prevalent pattern for three syllables (A-B-C) is for A and B to both change to second tones, while C retains its third tone. This effectively groups the first two syllables, applying the 3rd + 3rd → 2nd + 3rd rule, and then the outcome (2nd + 3rd) flows into the final 3rd tone syllable.
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Common pattern for 3rd + 3rd + 3rd:
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3rd tone A + 3rd tone B + 3rd tone C → 2nd tone A + 2nd tone B + 3rd tone C (in speech)
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| Original Pinyin (Written) | Spoken Pronunciation | English Meaning |
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| :------------------------ | :------------------- | :------------------------ |
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| wǒ hěn hǎo (我 很 好) | wó hén hǎo | I am very good/fine |
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| nǐ yě hǎo (你 也 好) | ní yé hǎo | You are also good/fine |
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| mǎi hěn hǎo (买 很 好) | mái hén hǎo | buy very good (something) |
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In wǒ hěn hǎo, 我 changes to wó and 很 changes to hén. This implies a perceived grouping of (我 很) 好 or a sequential application. The second tone 很 then leads into the third tone 好 without further sandhi. This pattern reflects the tendency for speakers to create two-syllable rhythmic units.
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Alternative for Three Consecutive 3rd Tones (Less Common, Meaning-Dependent)
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In some less frequent scenarios, or with very specific phrasing, the grouping might be A (3rd) + (B (3rd) + C (3rd)). In this case, B would change to 2nd tone due to C, but A would retain its 3rd tone because it is followed by a 2nd tone (B after sandhi), not another 3rd tone. The result would be 3rd tone A + 2nd tone B + 3rd tone C.
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For example, if 我 was intentionally emphasized or separated from 很好, one might hear wǒ hén hǎo. However, for learners, focusing on the 2nd + 2nd + 3rd pattern for three consecutive third tones will cover most natural speech situations and is easier to internalize initially.
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Key Takeaway: The phonetic changes are predictable. The challenge lies in distinguishing the constant written form from the dynamic spoken form. Consistent practice with common two-syble combinations will build foundational fluency.

When To Use It

The 3rd tone combination rule is not an optional embellishment; it is a mandatory and automatic phonetic adjustment for natural-sounding Mandarin. You must use it every single time two or more consecutive third tone syllables appear in your speech. There are no exceptions when the syllables are pronounced together without a pause.
Here are the primary contexts where you will encounter and apply this rule:
  • Common Greetings and Phrases: These are often the first words learners acquire and are saturated with third tone combinations. Mastery here is foundational.
  • 你好 (nǐ hǎo, hello): Always ní hǎo.
  • 可以 (kě yǐ, can/may): Always ké yǐ.
  • 也许 (yě xǔ, perhaps): Always yé xǔ.
  • 所以 (suǒ yǐ, so/therefore): Always suó yǐ.
  • Compound Words and Bisylabbic Terms: Many Chinese words, especially adjectives, verbs, and nouns, are formed by two characters. If both characters are originally third tone, the rule applies.
  • 洗澡 (xǐ zǎo, to take a bath): Pronounced xí zǎo.
  • 打扰 (dǎ rǎo, to disturb): Pronounced dá rǎo.
  • 古老 (gǔ lǎo, ancient): Pronounced gú lǎo.
  • 影响 (yǐng xiǎng, influence): Pronounced yíng xiǎng.
  • Within Phrases, Across Word Boundaries: The phonetic rule doesn't care about grammatical word boundaries. If a third tone word is followed immediately by another third tone word in the same breath group, the first one changes.
  • 我很好 (wǒ hěn hǎo, I am very good): Pronounced wó hén hǎo.
  • 你也很美 (nǐ yě hěn měi, You are also very beautiful): Pronounced ní yé hěn měi. (Note that 美 is third tone, triggering 很 to change, and 也 is third tone, triggering 你 to change).
  • 请你给我 (qǐng nǐ gěi wǒ, Please give me): Pronounced qíng ní géi wǒ. (Here, 请 changes due to 你, 你 changes due to 给, and 给 changes due to 我). This illustrates the cascading nature for longer sequences.
  • When a Pause is Absent: This rule is entirely dependent on the continuous flow of speech. If there's a natural pause or break between two third tone syllables, the sandhi rule is reset, and both syllables are pronounced with their original third tones. However, such pauses between closely related words or within a compound word are rare and often sound unnatural.
  • Achieving Native-Like Fluency: The primary reason for mastering this rule is to sound natural and be easily understood by native speakers. While a beginner might be forgiven for not consistently applying sandhi, it's a clear marker of advanced proficiency. Over time, with consistent practice and exposure, the application of this rule should become as automatic for you as it is for native speakers.

Common Mistakes

Learners at various stages often make specific errors when it comes to the 3rd tone combination rule. Recognizing these pitfalls can help you avoid them and refine your pronunciation more effectively.
1. Articulating Two Full 3rd Tones Consecutively:
  • The Mistake: Attempting to pronounce both nǐ and hǎo with a full dipping third tone when saying 你好. This results in a double dip (nǐ-hǎo).
  • Why it's a mistake: Phonetically, this is extremely challenging and creates a choppy, unnatural sound. Native speakers find it difficult and often unintelligible. The brain automatically simplifies the articulation for efficiency. It's akin to trying to say "sixth-ths" in English; the tongue naturally simplifies it.
  • Correction: Always allow the first 3rd tone to rise (ní) before the second 3rd tone dips (hǎo). Listen carefully to native speakers and mimic their flow.
2. Changing the Written Pinyin:
  • The Mistake: Writing ní hǎo instead of nǐ hǎo in pinyin, or expecting dictionaries and input methods to reflect the sandhi tone.
  • Why it's a mistake: Pinyin, in dictionaries and for input, always represents the lexical (underlying) tone of a character or word, not its phonetic tone after sandhi. Changing it in writing is incorrect and will prevent you from finding words in dictionaries or typing them correctly. This distinction is fundamental: written pinyin is lexical, spoken tone is phonetic.
  • Correction: Always write the original pinyin with its proper tone marks. Understand that the change only occurs in the acoustic realization.
3. Inconsistent Application of the Rule:
  • The Mistake: Applying the rule correctly for common phrases like 你好 (because it's memorized) but failing to apply it to other, less familiar combinations of two third tones, such as 水饺 (shuǐ jiǎo, dumplings) becoming shúi jiǎo, or 纸笔 (zhǐ bǐ, paper and pen) becoming zhí bǐ.
  • Why it's a mistake: The rule is universal for all adjacent third tones. Inconsistent application makes your speech sound disjointed and highlights a lack of deep internalization of the phonetic rule.
  • Correction: Treat the rule as absolute. Whenever you encounter 3rd + 3rd, consciously practice making the first a 2nd tone. Over time, this will become automatic for all such combinations, not just memorized phrases.
4. Confusing 3rd Tone Sandhi with Other Tone Sandhi Rules:
  • The Mistake: Blending the rules for 不 (bù) and 一 (yī) with the general 3rd tone sandhi, or misapplying them.
  • Why it's a mistake: While all are forms of tone sandhi, 不 and 一 have unique, lexically specific rules that depend on the tone of the following syllable, whereas the 3rd tone combination rule is a general phonetic rule applying to any two consecutive 3rd tones. Mixing them up leads to incorrect tonal shifts.
  • Correction: Clearly differentiate these rules. Use a comparative approach to solidify your understanding (see Contrast section below).
5. Ignoring Sandhi Across Word Boundaries:
  • The Mistake: Applying the rule only within single compound words but not when two separate words, both 3rd tone, occur next to each other in a phrase (e.g., 你 + 也).
  • Why it's a mistake: The 3rd tone combination rule is a phonetic phenomenon, driven by ease of articulation, not grammatical word structure. The mouth and tongue don't recognize word breaks; they just process a continuous stream of syllables. If two 3rd tones are adjacent in this stream, the sandhi applies.
  • Correction: Practice phrases, not just individual words. Focus on the flow of speech. For 你 (nǐ) followed by 也 (yě), consciously connect them as ní yě.
Summary of Correction Strategy: Practice, active listening, and understanding the 'why' behind the rule are your best tools. Regular exposure to native speech and conscious imitation will help internalize these patterns.

Real Conversations

The 3rd tone combination rule is ubiquitous in everyday Mandarin conversation. Its seamless application is a hallmark of natural speech and crucial for effective communication. Here, we illustrate its presence in typical dialogues, highlighting that these aren't just textbook examples but the very fabric of spoken Chinese.

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Scenario 1

Greeting a friend

- A: 你好！ (nǐ hǎo!) - Pronounced ní hǎo! (Hello!)

- B: 你好！你最近怎么样？ (nǐ hǎo! nǐ zuìjìn zěnmeyàng?) - Pronounced ní hǎo! ní zuìjìn zěnmeyàng? (Hello! How have you been recently?)

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Observation

* The 你好 (nǐ hǎo) greeting is the most common example. Even when repeated by B, 你 (nǐ) still changes to a 2nd tone due to 好 (hǎo).
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Scenario 2

Asking for help/permission

- A: 我有点儿问题，可以问你吗？ (wǒ yǒu diǎnr wèntí, kěyǐ wèn nǐ ma?) - Pronounced wó yǒu diǎnr wèntí, kéyǐ wèn nǐ ma? (I have a small problem, can I ask you?)

- B: 可以啊，请讲。 (kěyǐ a, qǐng jiǎng.) - Pronounced kéyǐ a, qíng jiǎng. (Of course, please speak.)

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Observation

* 可以 (kě yǐ) is pronounced ké yǐ. Note 请 (qǐng) also changes to qíng because it's followed by 讲 (jiǎng), which is another 3rd tone. This demonstrates the rule applying to different pairs.
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Scenario 3

Expressing agreement or adding information

- A: 我觉得他很喜欢吃饺子。 (wǒ juéde tā hěn xǐhuān chī jiǎozi.) - Pronounced wó juéde tā hén xǐhuān chī jiǎozi. (I think he really likes eating dumplings.)

- B: 我也喜欢。水饺比包子好吃！ (wǒ yě xǐhuān. shuǐ jiǎo bǐ bāozi hǎochī!) - Pronounced wó yé xǐhuān. shúi jiǎo bǐ bāozi hǎochī! (I like them too. Dumplings are tastier than steamed buns!)

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Observation

* 我也 (wǒ yě) is pronounced wó yě. In 水饺 (shuǐ jiǎo), 水 (shuǐ) changes to shúi. 好吃 (hǎo chī) doesn't trigger the rule because 吃 (chī) is 1st tone.
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Scenario 4

Casual chat about plans

- A: 你明天有空吗？我们也许可以一起去图书馆。 (nǐ míngtiān yǒu kōng ma? wǒmen yěxǔ kěyǐ yìqǐ qù túshūguǎn.) - Pronounced ní míngtiān yǒu kōng ma? wǒmen yéxǔ kéyǐ yìqǐ qù túshūguǎn. (Are you free tomorrow? Maybe we can go to the library together.)

- B: 我很好，也许可以。 (wǒ hěn hǎo, yěxǔ kěyǐ.) - Pronounced wó hén hǎo, yéxǔ kéyǐ. (I'm fine, maybe I can.)

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Observation

* The sentence contains 你 (nǐ) 也 (yě) 许 (xǔ) 可 (kě) 以 (yǐ) – a chain of five third tones within a natural phrase, leading to extensive sandhi application: ní yé xú ké yǐ (though 也 and 许 here would likely be yé xú, and 可 and 以 would be ké yǐ). B's response 我很好 (wǒ hěn hǎo) becomes wó hén hǎo, and 也许可以 (yě xǔ kě yǐ) becomes yé xú ké yǐ.

These examples demonstrate that the rule isn't confined to isolated word pairs but is a constant feature of connected speech. Internalizing these patterns through listening and imitation is far more effective than trying to apply the rule consciously in real-time.

Quick FAQ

Q: Do I write nǐ hǎo or ní hǎo?

Always write nǐ hǎo with the original (lexical) tones. The change to ní hǎo occurs only in spoken pronunciation.

Q: Does sandhi apply if a pause separates the syllables?

No. The 3rd tone combination rule only applies when two or more third tone syllables are spoken in immediate succession without any break or pause between them. A pause resets the tonal environment.

Q: What if there are more than two 3rd tones in a row, like 我很好 (wǒ hěn hǎo)?

For three consecutive 3rd tones, the most common pattern is for the first two to change to 2nd tone, resulting in 2nd + 2nd + 3rd (e.g., wó hén hǎo). This grouping often aligns with semantic units.

Q: Is this rule optional? Can I choose not to use it?

No, it is not optional. It's an automatic, mandatory phonetic rule for speaking natural Mandarin. Failing to apply it will make your speech sound unnatural and may hinder comprehension.

Q: Does this rule apply to every character that is a 3rd tone?

Yes, it applies to any syllable that carries a third tone, regardless of the specific character, when it is immediately followed by another third tone syllable in speech.

Q: How quickly should I expect to master this?

Consistent practice and active listening are key. It often takes time and exposure for the rule to become truly automatic, but beginners should aim to apply it for common two-syllable combinations like 你好 and 可以 from the outset. Perfection comes with sustained effort.

Q: Does this rule affect 不 (bù) or 一 (yī)?

No, the 3rd tone combination rule is separate from the specific tone changes of 不 and 一, which follow their own unique rules based on the tone of the syllable that follows them. Do not confuse these distinct sandhi rules.

3rd Tone Combination Table

First Character Second Character Original Tones Spoken Tones
{你|nǐ}
{好|hǎo}
3rd + 3rd
2nd + 3rd
{很|hěn}
{好|hǎo}
3rd + 3rd
2nd + 3rd
{水|shuǐ}
{果|guǒ}
3rd + 3rd
2nd + 3rd
{请|qǐng}
{等|děng}
3rd + 3rd
2nd + 3rd
{小|xiǎo}
{雨|yǔ}
3rd + 3rd
2nd + 3rd
{领|lǐng}
{导|dǎo}
3rd + 3rd
2nd + 3rd

Meanings

A phonological rule where the first of two consecutive 3rd tones shifts to a 2nd tone for easier articulation.

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Standard Sandhi

The mandatory change when two 3rd tones are adjacent.

“{你好|nǐ hǎo}”

“{水果|shuǐ guǒ}”

Reference Table

Reference table for Tone Changes - 3rd Tone Combination
Form Structure Example
Affirmative
3rd + 3rd
{你好|ní hǎo}
Negative
3rd + 3rd
{不准|bú zhǔn}
Question
3rd + 3rd
{你想|ní xiǎng?}
Short Answer
3rd + 3rd
{很好|hén hǎo}
Multi-word
3rd + 3rd + 3rd
{我很好|wó hén hǎo}
Fast Speech
3rd + 3rd
{水果|shuí guǒ}

Formality Spectrum

Formal
{您好|nín hǎo}

{您好|nín hǎo} (Greeting)

Neutral
{你好|ní hǎo}

{你好|ní hǎo} (Greeting)

Informal
{你哈|nǐ hā}

{你哈|nǐ hā} (Greeting)

Slang
{哈喽|hā lóu}

{哈喽|hā lóu} (Greeting)

Tone Sandhi Logic

3rd + 3rd

Action

  • Change 1st Shift to 2nd

Result

  • Flow Smooth speech
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Examples by Level

1

{你好|nǐ hǎo}

Hello

2

{很好|hěn hǎo}

Very good

3

{水果|shuǐ guǒ}

Fruit

4

{洗手|xǐ shǒu}

Wash hands

1

{我想|wǒ xiǎng}

I think/want

2

{请等|qǐng děng}

Please wait

3

{小雨|xiǎo yǔ}

Light rain

4

{管理|guǎn lǐ}

Management

1

{领导|lǐng dǎo}

Leader

2

{演讲|yǎn jiǎng}

Speech

3

{展览|zhǎn lǎn}

Exhibition

4

{打扰|dǎ rǎo}

Disturb

1

{选举|xuǎn jǔ}

Election

2

{采访|cǎi fǎng}

Interview

3

{勉强|miǎn qiǎng}

Reluctant

4

{简短|jiǎn duǎn}

Brief

1

{隐忍|yǐn rěn}

Endure

2

{反感|fǎn gǎn}

Disgust

3

{整改|zhěng gǎi}

Rectify

4

{广岛|guǎng dǎo}

Hiroshima

1

{妥善|tuǒ shàn}

Properly

2

{简朴|jiǎn pǔ}

Simple

3

{惨淡|cǎn dàn}

Bleak

4

{奖赏|jiǎng shǎng}

Reward

Easily Confused

Tone Changes - 3rd Tone Combination vs Half 3rd Tone

Learners think every 3rd tone changes.

Tone Changes - 3rd Tone Combination vs 4th Tone

Learners confuse 2nd and 4th.

Tone Changes - 3rd Tone Combination vs Neutral Tone

Learners confuse 3rd with neutral.

Common Mistakes

✗

nǐ hǎo

✓

ní hǎo

Pronouncing both as 3rd tone.
✗

wǒ hěn hǎo

✓

wó hén hǎo

Missing the sandhi in a 3-word chain.
✗

nǐ... hǎo

✓

ní hǎo

Pausing between the words.
✗

nǐ hǎo (with 4th tone)

✓

ní hǎo

Using the wrong tone entirely.
✗

shuǐ guǒ (as 3rd+3rd)

✓

shuí guǒ

Ignoring the rule in common nouns.
✗

qǐng děng (as 3rd+3rd)

✓

qíng děng

Failure to apply in instructions.
✗

lǐng dǎo (as 3rd+3rd)

✓

líng dǎo

Failure to apply in professional titles.
✗

yǎn jiǎng (as 3rd+3rd)

✓

yán jiǎng

Failure to apply in academic contexts.
✗

zhǎn lǎn (as 3rd+3rd)

✓

zhán lǎn

Failure to apply in formal contexts.
✗

dǎ rǎo (as 3rd+3rd)

✓

dá rǎo

Failure to apply in social contexts.
✗

yǐn rěn (as 3rd+3rd)

✓

yín rěn

Failure to apply in literary contexts.
✗

fǎn gǎn (as 3rd+3rd)

✓

fán gǎn

Failure to apply in emotional contexts.
✗

zhěng gǎi (as 3rd+3rd)

✓

zhéng gǎi

Failure to apply in policy contexts.

Sentence Patterns

___ ___ (3rd+3rd) is good.

I want to ___ ___.

The ___ ___ is here.

Please ___ ___.

Real World Usage

Greeting a friend constant

{你好|ní hǎo}

Ordering fruit very common

{买水果|mǎi shuí guǒ}

Work meeting common

{领导好|líng dǎo hǎo}

Texting (reading aloud) common

{很好|hén hǎo}

Travel occasional

{请等一下|qíng děng yī xià}

Academic presentation occasional

{开始演讲|kāi shǐ yán jiǎng}

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💡

Listen for the rise

When you hear two 3rd tones, listen for the rise in the first one. It sounds like a 2nd tone.
⚠️

Don't over-pause

If you pause between words, you break the sandhi. Keep it flowing.
🎯

Record and compare

Record yourself and compare it to a native speaker. You'll hear the difference.
💬

It's natural

Don't worry about 'breaking' the rule. Your mouth will naturally want to do it once you get the rhythm.

Smart Tips

Change the first one to a 2nd tone.

nǐ hǎo → ní hǎo

Don't pause between words.

nǐ... hǎo → ní hǎo

Record yourself.

nǐ hǎo (robotic) → ní hǎo (natural)

Focus on the pitch rise.

nǐ hǎo (dip-dip) → ní hǎo (rise-dip)

Pronunciation

Low-dip-rise

3rd Tone

Starts low, dips, then rises.

Mid-to-high

2nd Tone

Starts mid, rises to high.

Sandhi Flow

↗ ˇ

The first tone rises, the second dips.

Memorize It

Mnemonic

Think of the first 3rd tone as a 'bouncing ball' that hits the second 3rd tone and bounces up into a 2nd tone.

Visual Association

Imagine two heavy weights (3rd tones) trying to sit on a small chair. One has to stand up (2nd tone) so the other can sit down.

Rhyme

When two 3rd tones meet in line, turn the first to a 2nd tone, that's fine!

Story

A man named {李|Lǐ} (3rd) meets his friend {马|Mǎ} (3rd). Because they are both 3rd tones, {李|Lǐ} stands up tall (2nd tone) to greet {马|Mǎ} properly. Now they are {李马|Lí Mǎ}.

Word Web

{你好|nǐ hǎo}{很好|hěn hǎo}{水果|shuǐ guǒ}{领导|lǐng dǎo}{洗手|xǐ shǒu}{我想|wǒ xiǎng}

Challenge

Record yourself saying 'Nǐ hǎo' 10 times, focusing on making the first syllable sound like 'Ní'.

Cultural Notes

This is the standard rule taught in all schools.

The rule is identical, though the 3rd tone is often pronounced as a low-falling tone.

Often simplified, but the sandhi rule is still recognized in formal speech.

Tone sandhi evolved as a natural phonetic adjustment in spoken Mandarin.

Conversation Starters

“

Do you like fruit?

“

How are you?

“

Can you wait?

“

Is the leader here?

Journal Prompts

Write about your day using 3rd tone words.
Describe a fruit you like.
Write a short dialogue with a leader.
Reflect on a difficult task.

Common Mistakes

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

Incorrect

Correct

Sign up free to see all tips

Test Yourself

Which is the correct pronunciation? Multiple Choice

{你好|nǐ hǎo} is pronounced as:

✓ Correct! ✗ Not quite. Correct answer: b
The first 3rd tone changes to 2nd.
Fill in the correct tone for the first character.

{水果|___ guǒ} (3rd+3rd)

✓ Correct! ✗ Not quite. Correct answer: b
3rd+3rd becomes 2nd+3rd.
Identify the error. Error Correction

Find and fix the mistake:

In {很好|hěn hǎo}, the first tone is 3rd.

✓ Correct! ✗ Not quite. Correct answer: b
It changes to 2nd.
Reorder the words. Sentence Building

hǎo / nǐ / (Hello)

✓ Correct! ✗ Not quite. Correct answer: c
The correct order is nǐ hǎo, pronounced ní hǎo.
Match the phrase to its spoken tone. Match Pairs

Match each item on the left with its pair on the right:

✓ Correct! ✗ Not quite. Correct answer: b
3rd+3rd becomes 2nd+3rd.
Is this rule optional? True False Rule

Tone sandhi is optional.

✓ Correct! ✗ Not quite. Correct answer: b
It is mandatory for natural speech.
Complete the dialogue. Dialogue Completion

A: How are you? B: {我___|wǒ hěn hǎo}

✓ Correct! ✗ Not quite. Correct answer: b
3rd+3rd becomes 2nd+3rd.
Convert to sandhi form. Conjugation Drill

{洗手|xǐ shǒu} -> ?

✓ Correct! ✗ Not quite. Correct answer: b
3rd+3rd becomes 2nd+3rd.

Score: /8

Practice Exercises

8 exercises
Which is the correct pronunciation? Multiple Choice

{你好|nǐ hǎo} is pronounced as:

✓ Correct! ✗ Not quite. Correct answer: b
The first 3rd tone changes to 2nd.
Fill in the correct tone for the first character.

{水果|___ guǒ} (3rd+3rd)

✓ Correct! ✗ Not quite. Correct answer: b
3rd+3rd becomes 2nd+3rd.
Identify the error. Error Correction

Find and fix the mistake:

In {很好|hěn hǎo}, the first tone is 3rd.

✓ Correct! ✗ Not quite. Correct answer: b
It changes to 2nd.
Reorder the words. Sentence Building

hǎo / nǐ / (Hello)

✓ Correct! ✗ Not quite. Correct answer: c
The correct order is nǐ hǎo, pronounced ní hǎo.
Match the phrase to its spoken tone. Match Pairs

{领导|lǐng dǎo} -> ?

✓ Correct! ✗ Not quite. Correct answer: b
3rd+3rd becomes 2nd+3rd.
Is this rule optional? True False Rule

Tone sandhi is optional.

✓ Correct! ✗ Not quite. Correct answer: b
It is mandatory for natural speech.
Complete the dialogue. Dialogue Completion

A: How are you? B: {我___|wǒ hěn hǎo}

✓ Correct! ✗ Not quite. Correct answer: b
3rd+3rd becomes 2nd+3rd.
Convert to sandhi form. Conjugation Drill

{洗手|xǐ shǒu} -> ?

✓ Correct! ✗ Not quite. Correct answer: b
3rd+3rd becomes 2nd+3rd.

Score: /8

Practice Bank

15 exercises
What is the spoken pronunciation of 所以 (suǒ yǐ, therefore)? Multiple Choice

Spoken form of 所以:

✓ Correct! ✗ Not quite. Correct answer: suó yǐ
Fill in the spoken form of the phrase 我也 (I also) using the sandhi rule. Fill in the Blank

我 (wǒ, 3rd) + 也 (yě, 3rd) spoken form = ___ yě

✓ Correct! ✗ Not quite. Correct answer: wó
Match each phrase's written pinyin to its correct spoken pronunciation. Match Pairs

Match:

✓ Correct! ✗ Not quite. Correct answer: matched
A student writes the pinyin for 你好 as 'ní hǎo' in their vocabulary notebook. Is this correct? Error Correction

The correct written pinyin for 你好 in a notebook or dictionary is:

✓ Correct! ✗ Not quite. Correct answer: nǐ hǎo (keep underlying tones in writing)
Does the 3rd-tone sandhi rule apply if there is a pause between the two 3rd-tone syllables? Multiple Choice

If you pause briefly between 你 (nǐ) and 好 (hǎo), do you apply sandhi?

✓ Correct! ✗ Not quite. Correct answer: No — sandhi only applies when syllables follow immediately without a pause
Identify the spoken pronunciation of the sentence 我也可以去 (I can also go). List the syllables with sandhi applied. Sentence Reorder

我(wǒ) + 也(yě) + 可(kě) + 以(yǐ) + 去(qù). Which syllables change?

✓ Correct! ✗ Not quite. Correct answer: wó yě ké yǐ qù — wǒ and kě change to 2nd tone
The word 古老 (gǔ lǎo, ancient) has two consecutive 3rd tones. What is its spoken form? Fill in the Blank

古老 written: gǔ lǎo. Spoken: ___ lǎo

✓ Correct! ✗ Not quite. Correct answer: gú
Translate 'I want to take a shower' into Chinese pinyin, applying correct sandhi. Translation

我想洗澡 (Wǒ xiǎng xǐ zǎo). Which syllables undergo 3rd-tone sandhi?

✓ Correct! ✗ Not quite. Correct answer: xǐ → xí (because xǐ 3rd + zǎo 3rd)
Which of these words has BOTH syllables as 3rd tone and therefore triggers sandhi? Multiple Choice

Select the word where both syllables are originally 3rd tone:

✓ Correct! ✗ Not quite. Correct answer: 可以 kěyǐ
Match each word to whether 3rd-tone sandhi applies. Match Pairs

Match:

✓ Correct! ✗ Not quite. Correct answer: matched
A student says '展览馆' as 'zhǎn lǎn guǎn' without any sandhi. Fix this for natural pronunciation. Error Correction

The natural spoken pronunciation of 展览馆 (exhibition hall) is:

✓ Correct! ✗ Not quite. Correct answer: zhán lán guǎn
The compound word 影响 (yǐng xiǎng, influence/effect) — does sandhi apply? Fill in the Blank

影响: 影(yǐng, 3rd) + 响(xiǎng, 3rd). Spoken form of 影 in this word = ___

✓ Correct! ✗ Not quite. Correct answer: yíng (2nd tone via sandhi)
Arrange these syllables to form 你也可以来 (You can also come). Identify which words trigger sandhi. Sentence Reorder

Order: [yě] [Nǐ] [yǐ] [kě] [lái]. Which pairs trigger sandhi?

✓ Correct! ✗ Not quite. Correct answer: Nǐ yě, kě yǐ — both pairs trigger sandhi
Why is the 3rd-tone sandhi rule described as automatic and natural — not a conscious decision? Multiple Choice

Which best explains why native speakers apply this rule automatically?

✓ Correct! ✗ Not quite. Correct answer: Two consecutive 3rd tones are physically difficult to produce — the articulatory path naturally shifts the first to 2nd tone
Translate 'She also knows.' (她也知道) and identify the sandhi. Translation

她(tā,1st) + 也(yě,3rd) + 知道(zhīdào,1st+4th). Does sandhi apply here?

✓ Correct! ✗ Not quite. Correct answer: No — tā is 1st tone, not 3rd, so no consecutive 3rd tones exist

Score: /15

FAQ (8)

No, you write the original 3rd tone, but you speak the 2nd tone.

The rule applies to the first two, and then the third one might trigger another change.

No, it is essential for sounding natural.

Sandhi is a linguistic term for phonetic changes at word boundaries.

Only when they are adjacent.

You will sound robotic and slow.

Most Mandarin dialects follow this, but some vary.

Listen to native audio and mimic the pitch.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

Sign up free to practice

In Other Languages

Spanish none

None

Mandarin uses pitch for meaning; Spanish does not.

French partial

Liaison

Liaison is about consonants; sandhi is about pitch.

German low

Sandhi-like phenomena

German is stress-timed; Mandarin is tone-based.

Japanese moderate

Pitch accent

Japanese pitch is about word-level accent; Mandarin is syllable-level.

Arabic none

None

Arabic uses root-and-pattern morphology.

Chinese high

Tone Sandhi

It is the source of the rule.

Learning Path

Prerequisites

Next
Chinese Tone Rules: The 'No' and 'One' Chameleons (不/一)

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