Time Travel 101: Using 以前 (yǐqián) for Before & Ago
Grammar Rule in 30 Seconds
Use {以前|yǐqián} to talk about the past, whether you mean 'before' an event or a duration of time 'ago'.
- Use it after a time duration: {三天|sāntiān} {以前|yǐqián} (three days ago).
- Use it after a verb phrase: {吃饭|chīfàn} {以前|yǐqián} (before eating).
- Use it alone to mean 'in the past': {我|wǒ} {以前|yǐqián} {很|hěn} {忙|máng} (I was busy in the past).
Overview
Chinese time expressions, particularly 以前 (yǐqián), frequently challenge English speakers due to fundamental differences in grammatical structure and conceptualization of time. While English often places "before" at the beginning of a temporal clause (e.g., "Before I eat"), Mandarin strictly adheres to a chronological order where the event or time reference must precede 以前 (yǐqián). This structure reflects a core linguistic principle in Chinese: information is presented in the order it occurs.
At the A2 CEFR level, mastering 以前 (yǐqián) is crucial for accurately expressing past events, durations, and action sequences, moving beyond direct, often incorrect, translation. This guide clarifies the structure and underlying logic of 以前 (yǐqián), enabling you to speak about the past with native-like precision.
How This Grammar Works
以前 (yǐqián) requires appreciating the unique spatial-temporal metaphors prevalent in Chinese thought. Unlike Western perspectives that often view the future as "in front" and the past as "behind," traditional Chinese mapping typically positions the past in front (前 (qián)) because it is known and observable, while the future is behind (后 (hòu)) as it remains unseen. This cognitive model profoundly influences how temporal clauses are constructed.以 (yǐ) functions as a boundary marker or starting point, indicating "from" or "by." When combined with 前 (qián), meaning "front" or "before," 以前 (yǐqián) literally translates to "from this point forward (into the past)" or "before this boundary." This etymology from classical Chinese reinforces its function.以前 (yǐqián) to function, its reference point—the event or specific time—must be established first. You cannot refer to "before" something until that "something" has been clearly defined. This creates the fixed [Event/Time] + 以前 (yǐqián) structure.吃饭 (chīfàn), and then append 以前 (yǐqián), forming 吃饭以前 (chīfàn yǐqián). This is not merely a grammatical rule but a reflection of how Chinese thought sequences actions and information. It is akin to saying, "The eating event, prior to that," ensuring clarity and chronological precision in communication.下班以前，我得去超市 (xiàbān yǐqián, wǒ děi qù chāoshì) (Before getting off work, I need to go to the supermarket). Here, 下班 (xiàbān) is the established event.Formation Pattern
以前 (yǐqián), each serving a distinct temporal function. Recognising these structures will allow you to articulate various past references accurately.
以前 (yǐqián) follows a precise time duration. This is one of the most common uses.
[Time Duration] + 以前 (yǐqián)
三天以前 (sān tiān yǐqián) – "three days ago"
两年以前 (liǎng nián yǐqián) – "two years ago"
五分钟以前 (wǔ fēnzhōng yǐqián) – "five minutes ago"
以前 (yǐqián). For example, 我三天以前买了一个新手机 (wǒ sān tiān yǐqián mǎi le yī ge xīn shǒujī) ("I bought a new phone three days ago"). The time word 三天 (sān tiān) is directly followed by 以前 (yǐqián).
以前 (yǐqián).
[Action/Event Clause] + 以前 (yǐqián)
吃饭以前 (chīfàn yǐqián) – "before eating"
上课以前 (shàng kè yǐqián) – "before attending class"
我认识他以前 (wǒ rènshi tā yǐqián) – "before I knew him"
我们上课以前先喝咖啡吧 (wǒmen shàng kè yǐqián xiān hē kāfēi ba) ("Before we go to class, let's drink coffee first"). The action 上课 (shàng kè) is the reference point, and 以前 (yǐqián) marks the time prior to it. If the action clause has a subject, it typically precedes the verb within that clause (e.g., 我认识他以前), or the entire [Subject + Action] + 以前 phrase functions as an adverbial clause at the beginning of the main sentence, like 你回家以前，别忘了买牛奶 (nǐ huí jiā yǐqián, bié wàng le mǎi niúnǎi) ("Before you go home, don't forget to buy milk").
以前 (yǐqián) is used independently, usually at the beginning of a sentence, it acts as a general adverbial phrase referring to an unspecified past time.
以前 (yǐqián), [Sentence]
以前，我不喜欢吃辣的 (yǐqián, wǒ bù xǐhuān chī là de) – "In the past, I didn't like spicy food."
以前，这里是一家书店 (yǐqián, zhèlǐ shì yī jiā shūdiàn) – "Previously, this place was a bookstore."
以前我很忙，现在好多了 (yǐqián wǒ hěn máng, xiànzài hǎo duō le) ("I used to be very busy, but now it's much better"). It sets a general temporal context for the entire statement.
以 (yǐ) omission: In colloquial speech, especially for patterns 1 and 2, the character 以 (yǐ) is frequently omitted, leaving just 前 (qián). This makes phrases more succinct and natural-sounding. For instance, 三天前 (sān tiān qián) ("three days ago") or 下班前 (xiàbān qián) ("before getting off work") are commonly heard and perfectly acceptable in informal contexts, including messaging and casual conversation. Formal writing or very precise contexts might retain 以前 (yǐqián).
When To Use It
以前 (yǐqián) is a highly versatile time expression integral to everyday communication. You will find yourself using it across various situations, from recounting personal history to coordinating plans.- Recounting Past Events and Personal Experiences: Use
以前 (yǐqián)to specify when something happened or to describe past habits and states. 我以前在北京住过一年 (wǒ yǐqián zài Běijīng zhù guò yī nián)– "I lived in Beijing for a year previously." (Emphasizing a past experience)我们三年前认识的 (wǒmen sān nián qián rènshi de)– "We met three years ago." (Stating a specific time in the past)- Sequencing Actions: When you need to establish a chronological order for two events,
以前 (yǐqián)indicates the first action in relation to the second, much like an adverbial clause. 睡觉以前，请你关灯 (shuìjiào yǐqián, qǐng nǐ guān dēng)– "Before you go to bed, please turn off the lights." (An instruction)他下班以前会给我打电话 (tā xiàbān yǐqián huì gěi wǒ dǎ diànhuà)– "He will call me before he gets off work." (Future planning based on a prior event)- Contrasting Past and Present: Use
以前 (yǐqián)independently to introduce a past situation that differs from the present, often highlighting personal growth or change. 以前我不太喜欢运动，现在每天都跑步 (yǐqián wǒ bú tài xǐhuān yùndòng, xiànzài měi tiān dōu pǎobù)– "Previously, I didn't like exercise much, but now I run every day."- Making Preparations: It is common to use
以前 (yǐqián)when discussing tasks that need to be completed before a main event, particularly in practical scheduling. 去机场以前，我得买一些零食 (qù jīchǎng yǐqián, wǒ děi mǎi yī xiē língshí)– "Before going to the airport, I need to buy some snacks."
以前 (yǐqián)'s essential role in structuring narratives and instructions with clear temporal markers, allowing for precise communication about sequential events.Common Mistakes
以前 (yǐqián).- 1The English Word Order Trap: The most frequent error is directly translating English "before" word order. English places "before" before the event (e.g., "Before I eat"), but Chinese requires the event before
以前 (yǐqián). Putting以前 (yǐqián)at the beginning of a clause followed by an action (e.g.,*以前我吃饭 (yǐqián wǒ chīfàn)) will be misinterpreted as "In the past, I ate" or sound grammatically awkward. Always remember: Event first, then以前 (yǐqián).
- Incorrect:
*以前我去中国，需要买机票 (yǐqián wǒ qù Zhōngguó, xūyào mǎi jīpiào) - Correct:
我去中国以前，需要买机票 (wǒ qù Zhōngguó yǐqián, xūyào mǎi jīpiào)("Before I go to China, I need to buy a plane ticket.")
- 1Confusing Temporal
以前 (yǐqián)with Spatial "In Front":以前 (yǐqián)is exclusively temporal. It never refers to physical location. To express "in front of" something physically, you must use spatial words like前面 (qiánmiàn)or前边 (qiánbian). Using以前 (yǐqián)spatially is a severe error.
- Incorrect:
*我家以前有一个公园 (wǒ jiā yǐqián yǒu yī ge gōngyuán)(literally "Before my house, there was a park" - sounds like before my house existed) - Correct:
我家前面有一个公园 (wǒ jiā qiánmiàn yǒu yī ge gōngyuán)("In front of my house, there is a park.")
- 1Incorrect Subject Placement in Complex Clauses: When a clause modifying
以前 (yǐqián)has its own subject, learners sometimes mistakenly place this subject after以前 (yǐqián). The subject of the embedded clause should remain with its verb.
- Incorrect:
*洗澡以前你，先做饭 (xǐzǎo yǐqián nǐ, xiān zuòfàn) - Correct:
你洗澡以前，先做饭 (nǐ xǐzǎo yǐqián, xiān zuòfàn)("Before you take a shower, first cook dinner.") The subject你 (nǐ)belongs with洗澡 (xǐzǎo).
- 1Over-usage of
了 (le): Chinese verbs do not conjugate for tense.以前 (yǐqián)itself establishes the past context. While a perfective了 (le)can be used in the main clause to indicate completion, it is not required within the以前 (yǐqián)clause itself and can sometimes be redundant or incorrect.
- Incorrect:
*吃饭了以前，我洗手 (chīfàn le yǐqián, wǒ xǐshǒu) - Correct:
吃饭以前，我洗手 (chīfàn yǐqián, wǒ xǐshǒu)("Before eating, I wash my hands.")
Real Conversations
以前 (yǐqián) is a staple in natural Chinese conversation and writing, often appearing in casual exchanges, social media, and everyday planning.
- Casual Chat: You are catching up with a friend.
- A: 你以前喜欢看电影吗？ (nǐ yǐqián xǐhuān kàn diànyǐng ma?)
- B: 以前喜欢，现在没时间了。 (yǐqián xǐhuān, xiànzài méi shíjiān le.)
- Translation: A: "Did you like watching movies previously?" B: "I used to, but now I don't have time."
- Texting/Messaging: Coordinating a meetup.
- 我下班前会发信息给你。 (wǒ xiàbān qián huì fā xìnxī gěi nǐ.)
- Translation: "I'll text you before I get off work." (Note the common omission of 以)
- Social Media Comment: Reacting to an old photo.
- 哇！这是五年前的照片吧？你以前好瘦啊！ (wa! zhè shì wǔ nián qián de zhàopiàn ba? nǐ yǐqián hǎo shòu a!)
- Translation: "Wow! This must be a photo from five years ago, right? You were so thin back then!"
- Giving Instructions: At work or home.
- 开会以前，请大家把文件都打印好。 (kāihuì yǐqián, qǐng dàjiā bǎ wénjiàn dōu dǎyìn hǎo.)
- Translation: "Before the meeting, everyone please print out all the documents."
These examples demonstrate 以前 (yǐqián)'s practical utility across various modern communication contexts, often in its shortened form 前 (qián). It conveys temporal sequence or general past reference efficiently and naturally.
Quick FAQ
以前 (yǐqián).前 (qián) instead of 以前 (yǐqián)?以 (yǐ) is extremely common and natural. For example, 三天前 (sān tiān qián) ("three days ago") or 下雨前 (xiàyǔ qián) ("before it rains") are preferred.以前 (yǐqián) sounds slightly more formal, though still correct. Both are understood.以前 (yǐqián)?以前 (yǐqián) itself provides the temporal context, indicating a past event or period.了 (le) for completion or 过 (guò) for experience in the main clause, but these are not direct tense markers tied to 以前 (yǐqián).以前 (yǐqián) differ from 以后 (yǐhòu)?以前 (yǐqián) means "before" or "ago," referring to the past. 以后 (yǐhòu) means "after" or "later," referring to the future. Crucially, their grammatical structures are identical: [Event/Time] + 以前/以后.前 (qián) signifies "front/past" and 后 (hòu) signifies "back/future," maintaining the consistency of the spatial-temporal metaphor. For example, 吃饭以前 (chīfàn yǐqián) (before eating) vs. 吃饭以后 (chīfàn yǐhòu) (after eating).以前 (yǐqián) interchangeable with 之前 (zhīqián)?之前 (zhīqián) is often interchangeable with 以前 (yǐqián) in meaning "before" or "ago." 之前 (zhīqián) tends to be slightly more formal or emphatic, making it common in written Chinese, business contexts, or when you want to highlight the preceding nature of something. For instance, 会议之前 (huìyì zhīqián) is often preferred over 会议以前 (huìyì yǐqián) in a professional setting.之 (zhī) in 之前 (zhīqián) often acts as a structural particle, similar to "of" in English.从前 (cóngqián) and 曾经 (céngjīng)? How do they relate?从前 (cóngqián): This also means "in the past," but it carries a distinct, often literary or fairytale-like connotation, similar to "Once upon a time." You would use it for distant, often unspecified past events, like从前有一个国王 (cóngqián yǒu yī ge guówáng)("Once upon a time there was a king"). It is rarely used for specific, recent past events or sequential actions. Avoid using从前to say "before dinner."曾经 (céngjīng): This is an adverb meaning "once," "previously," or "at one time," emphasizing that an action or state occurred in the past but is no longer current. It focuses on the experience itself. For example,我曾经去过北京 (wǒ céngjīng qù guò Běijīng)("I have been to Beijing before").曾经 (céngjīng)can often be used with以前 (yǐqián)for emphasis, as in我以前曾经住过那里 (wǒ yǐqián céngjīng zhù guò nàlǐ)("I lived there previously in the past").
很久以前 (hěn jiǔ yǐqián). This is a very common and useful phrase for storytelling or exaggerating the duration of a past event. For example, 很久以前，我们是邻居 (hěn jiǔ yǐqián, wǒmen shì línjū) ("A long time ago, we were neighbors").Formation of 以前
| Usage Type | Structure | Example |
|---|---|---|
|
Duration
|
[Duration] + 以前
|
三天以前 (3 days ago)
|
|
Event (Before)
|
[Verb] + 以前
|
吃饭以前 (Before eating)
|
|
General Past
|
以前 + [Subject] + [Verb]
|
以前我很高 (I was tall in the past)
|
|
Negative
|
以前 + 不/没 + [Verb]
|
以前我不去 (I didn't go in the past)
|
|
Interrogative
|
以前 + [Subject] + [Verb] + 吗?
|
以前你去过吗? (Did you go in the past?)
|
|
Time Clause
|
[Event] + 以前 + [Main Clause]
|
睡觉以前，我读书 (Before sleeping, I read)
|
Common Variations
| Full Form | Short Form | Usage |
|---|---|---|
|
以前
|
前
|
Duration only (e.g., 三天前)
|
|
以前
|
往日
|
Literary/Poetic (The past)
|
Meanings
A versatile temporal marker used to indicate a point in time prior to the current moment or prior to another specific event.
Ago (Duration)
Used after a length of time to indicate how long ago something happened.
“{两|liǎng} {年|nián} {以前|yǐqián}，{我|wǒ} {去|qù} {了|le} {上海|Shànghǎi}。”
“{五|wǔ} {分钟|fēnzhōng} {以前|yǐqián}，{他|tā} {还|hái} {在|zài} {这儿|zhèr}。”
Before (Event)
Used after a verb or event to indicate the time preceding that action.
“{睡觉|shuìjiào {以前|yǐqián}，{我|wǒ} {喜欢|xǐhuān} {看书|kànshū}。”
“{下课|xiàkè} {以前|yǐqián}，{请|qǐng} {交|jiāo} {作业|zuòyè}。”
In the past
Used as a standalone adverbial phrase to contrast the past with the present.
“{以前|yǐqián} {我|wǒ} {不|bù} {喜欢|xǐhuān} {吃|chī} {辣|là}。”
“{以前|yǐqián} {这儿|zhèr} {是|shì} {个|gè} {公园|gōngyuán}。”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Affirmative (Duration)
|
Time + 以前
|
一年以前
|
|
Affirmative (Event)
|
Verb + 以前
|
下课以前
|
|
Negative
|
以前 + 不/没 + Verb
|
以前没去过
|
|
Question
|
以前 + [Subject] + [Verb] + 吗?
|
以前你住这儿吗?
|
|
Past State
|
以前 + [Subject] + [Adjective]
|
以前我很瘦
|
|
Complex Sentence
|
Event + 以前, Main Clause
|
回家以前，买菜
|
Formality Spectrum
本人曾居于此。 (Talking about residence)
我以前住在这儿。 (Talking about residence)
我以前住这儿。 (Talking about residence)
以前住这儿。 (Talking about residence)
The 以前 Universe
Duration
- 三天以前 3 days ago
Event
- 吃饭以前 Before eating
State
- 以前很忙 Was busy in the past
Examples by Level
{以前|yǐqián} {我|wǒ} {是|shì} {学生|xuéshēng}。
I was a student in the past.
{睡觉|shuìjiào} {以前|yǐqián} {喝|hē} {水|shuǐ}。
Drink water before sleeping.
{以前|yǐqián} {很|hěn} {冷|lěng}。
It was very cold in the past.
{以前|yǐqián} {他|tā} {住|zhù} {这儿|zhèr}。
He lived here in the past.
{三|sān} {天|tiān} {以前|yǐqián} {我|wǒ} {买|mǎi} {了|le} {书|shū}。
I bought a book three days ago.
{下班|xiàbān} {以前|yǐqián} {我|wǒ} {要|yào} {开会|kāihuì}。
I have a meeting before getting off work.
{以前|yǐqián} {我|wǒ} {不|bù} {会|huì} {说|shuō} {中文|zhōngwén}。
I couldn't speak Chinese in the past.
{两|liǎng} {年|nián} {以前|yǐqián} {我|wǒ} {去|qù} {了|le} {日本|Rìběn}。
I went to Japan two years ago.
{结婚|jiéhūn} {以前|yǐqián}，{他们|tāmen} {是|shì} {同学|tóngxué}。
Before getting married, they were classmates.
{五|wǔ} {分钟|fēnzhōng} {以前|yǐqián} {他|tā} {还|hái} {在|zài} {办公室|bàngōngshì}。
He was still in the office five minutes ago.
{以前|yǐqián} {这|zhè} {条|tiáo} {路|lù} {没有|méiyǒu} {这么|zhème} {堵|dǔ}。
This road wasn't this congested in the past.
{看|kàn} {电影|diànyǐng} {以前|yǐqián}，{我们|wǒmen} {吃|chī} {了|le} {饭|fàn}。
We ate before watching the movie.
{以前|yǐqián} {人们|rénmen} {很少|hěnshǎo} {用|yòng} {智能|zhìnéng} {手机|shǒujī}。
In the past, people rarely used smartphones.
{项目|xiàngmù} {开始|kāishǐ} {以前|yǐqián}，{我们|wǒmen} {必须|bìxū} {做好|zuòhǎo} {准备|zhǔnbèi}。
Before the project starts, we must be well-prepared.
{以前|yǐqián} {的|de} {生活|shēnghuó} {虽然|suīrán} {辛苦|xīnkǔ}，{但|dàn} {很|hěn} {充实|chōngshí}。
Life in the past was hard, but fulfilling.
{半|bàn} {小时|xiǎoshí} {以前|yǐqián} {飞机|fēijī} {已经|yǐjīng} {起飞|qǐfēi} {了|le}。
The plane took off half an hour ago.
{以前|yǐqián} {的|de} {传统|chuántǒng} {在|zài} {现代|xiàndài} {社会|shèhuì} {逐渐|zhújiàn} {消失|xiāoshī}。
Traditional customs from the past are gradually disappearing in modern society.
{在|zài} {做出|zuòchū} {决定|juédìng} {以前|yǐqián}，{请|qǐng} {三思|sānsī}。
Before making a decision, please think three times.
{以前|yǐqián} {他|tā} {所|suǒ} {坚持|jiānchí} {的|de} {原则|yuánzé} {如今|rújīn} {已|yǐ} {不|bù} {适用|shìyòng} {了|le}。
The principles he insisted on in the past are no longer applicable.
{无论|wúlùn} {以前|yǐqián} {发生|fāshēng} {了|le} {什么|shénme}，{我们|wǒmen} {都|dōu} {要|yào} {向前|xiàngqián} {看|kàn}。
No matter what happened in the past, we must look forward.
{以前|yǐqián} {的|de} {文献|wénxiàn} {记载|jìzǎi} {与|yǔ} {现代|xiàndài} {考古|kǎogǔ} {发现|fāxiàn} {存在|cúnzài} {差异|chāyì}。
There are discrepancies between historical records from the past and modern archaeological findings.
{以前|yǐqián} {的|de} {种种|zhǒngzhǒng} {误解|wùjiě}，{如今|rújīn} {终于|zhōngyú} {烟消云散|yānxiāoyúnsàn} {了|le}。
The various misunderstandings of the past have finally dissipated.
{他|tā} {以前|yǐqián} {的|de} {辉煌|huīhuáng} {成就|chéngjiù} {并|bìng} {不能|bùnéng} {掩盖|yǎngài} {现在|xiànzài} {的|de} {失败|shībài}。
His past glorious achievements cannot mask his current failures.
{以前|yǐqián} {的|de} {社会|èhuì} {结构|jiégòu|égòu} {结构|jiégòu} {与|yǔ} {当今|dāngjīn} {大相径庭|dàxiāngjìngtíng}。
The social structure of the past is vastly different from today.
Easily Confused
Both are time markers.
Both mean 'ago'.
Both mean 'the past'.
Common Mistakes
以前三天
三天以前
以前吃饭
吃饭以前
以前去
以前我去过
以前以后
以前
以前我买书
我以前买书
三天前以前
三天以前
以前是吃饭
吃饭以前
以前我没去过
我以前没去过
以前的吃饭
吃饭以前
以前以后
以前
以前所发生
以前发生的事
以前的以前
过去
以前...以后
以前...现在
Sentence Patterns
___ 以前，我 ___。
___ 以前，我住在 ___。
以前我 ___，现在我 ___。
在 ___ 以前，请先 ___。
Real World Usage
十分钟以前我到了。
工作以前我做过销售。
以前的我和现在的我。
两年前以前我来过这儿。
下单以前请确认地址。
研究以前，我们进行了调查。
Placement is Key
Don't use for future
Standalone usage
Conversational flow
Smart Tips
Use 以前 to set the scene.
Use [Event] + 以前 to show order.
Put the duration first.
Use 以前...现在...
Pronunciation
Tones
yǐqián: 3rd tone, 2nd tone. Keep the 3rd tone clear.
Statement
以前我住这儿。↓
Falling intonation for facts.
Memorize It
Mnemonic
Think of 以前 as 'E-key-on'—the key that unlocks the door to the past.
Visual Association
Imagine a clock where the hands are moving backward. Every time you say 以前, you are turning the clock back to a previous moment.
Rhyme
Time or event, put 以前 at the end, to the past we will send.
Story
Once, I was a student (以前我是学生). Before I graduated (毕业以前), I studied hard. Three years ago (三年以前), I moved to a new city.
Word Web
Challenge
Write 3 sentences about your life 5 years ago using 以前.
Cultural Notes
Used frequently in daily life to contrast rapid urbanization.
Similar usage, often slightly more formal in written contexts.
Often used in code-switching contexts.
Derived from the concept of 'front' (前), representing time that has already passed.
Conversation Starters
你以前住在哪儿？
睡觉以前你做什么？
你以前学过中文吗？
你觉得以前的生活和现在有什么不同？
Journal Prompts
Common Mistakes
Test Yourself
我 ___ 以前去过中国。
Which is correct?
Find and fix the mistake:
以前三天我买了车。
Arrange the words in the correct order:
All words placed
Click words above to build the sentence
Before sleeping, I read.
Answer starts with: a...
Match each item on the left with its pair on the right:
Use 以前 and 学习.
___ 我很瘦。
Score: /8
Practice Exercises
8 exercises我 ___ 以前去过中国。
Which is correct?
Find and fix the mistake:
以前三天我买了车。
以前 / 我 / 很高 / 是
Before sleeping, I read.
Match 3 days ago.
Use 以前 and 学习.
___ 我很瘦。
Score: /8
Practice Bank
12 exercises___ ，这里没有地铁。 (In the past, there was no subway here.)
Order the following: 来 / 两年 / 以前 / 这里 / 我
Translate: Before class
What does '五年以前' mean?
我认识他以前三天。 (I met him three days ago.)
Which phrase means 'After eating'?
下雨 ___，我回家了。 (Before it rained, I went home.)
Order the following: 电影 / 我 / 买爆米花 / 以前 / 开始 / 想
外卖到以前 (wàimài dào yǐqián)
Choose the natural spoken form for 'One week ago':
电视以前有一只猫。 (There is a cat in front of the TV.)
In '以前，我不喜欢跑步', what does 以前 mean?
Score: /12
FAQ (8)
No, use 以后 for future.
It acts as a temporal noun/postposition.
No, that is redundant.
It is neutral and used everywhere.
No, it is invariant.
以前 is more general.
Yes, just add 吗.
很久以前.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
antes de
Chinese places it after the verb.
avant
French uses it before the event.
vorher
German syntax is more rigid.
以前 (izen)
Japanese particles are more complex.
قبل (qabla)
Arabic is a preposition.
以前
N/A
Learning Path
Prerequisites
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