Chinese Has No Conjugation — And That Is the Hard Part

Open a Chinese textbook and the first structural fact is a gift. 我去, 你去, 他去, 我们去 — the verb does not move. It does not move for person, for number, for gender, for politeness, or for time. 昨天去 and 明天去 use exactly the same 去. There are no irregular verbs because there is nothing for them to be irregular about.

Learners coming from French or Arabic, both of which spend years of school time on verb morphology, tend to react to this with relief. The relief is justified for about three weeks. Then something odd starts happening: sentences that are grammatically defensible keep coming back marked, and nobody can quite explain why.

Here is why. Conjugation is a compulsory system: French makes you decide the tense before you can utter the verb at all, and once you have decided, the ending does the work and the job is done. Chinese hands that decision back to you and does not tell you when it needs making. What replaces conjugation is not "nothing". It is four separate mechanisms, each optional, each with its own logic, and the difficulty is knowing which one — if any — the sentence requires.

Mechanism one: time words, and they come first

The single most important structural fact after word order. A time expression goes before the verb, either at the very start of the sentence or immediately after the subject.

• 昨天我去了北京。Zuótiān wǒ qù le Běijīng.
• 我昨天去了北京。Wǒ zuótiān qù le Běijīng.
• ✗ 我去北京昨天。

Both correct versions are fine; the difference is emphasis. What is not available is the English or French habit of putting the time at the end.

And crucially: once the time word is there, nothing else is needed. 我明天去上海 is a complete, correct sentence about the future with no marker of any kind. 我每天六点起床 is a complete habitual sentence with no marker. Over-marking is the single most common learner error in this area, and it comes from looking for something to stand in for the missing tense.

Mechanism two: aspect, which is not tense

This is where the real work is. Aspect is not about when an event happened; it is about how the speaker is viewing it — as complete, as ongoing, as an experience, as a new state.

了 is not a past tense. Say that to yourself until it stops feeling wrong. 了 does two different jobs.

Verbal 了 marks that the action is complete relative to a reference point, and that point can be in the future:

• 我吃了饭就去。Wǒ chī le fàn jiù qù. — I'll go once I've eaten. Future, with 了.
• 昨天我买了一本书。Zuótiān wǒ mǎi le yì běn shū.

Sentence-final 了 marks a change of state, a new situation:

• 下雨了。Xià yǔ le. — It's started raining.
• 他会说汉语了。Tā huì shuō Hànyǔ le. — He can speak Chinese now (he couldn't before).
• 我不去了。Wǒ bú qù le. — I'm not going any more.

And both can appear together: 我在这儿住了三年了。Wǒ zài zhèr zhù le sān nián le. — I've been living here for three years, and I still am.

过 marks experience. 我去过中国。Wǒ qù guo Zhōngguó. — I have been to China at some point. Compare 我去了中国 — I went (and the trip is a specific completed event). The difference is the difference between "I have eaten Peking duck" and "I ate the duck".

着 marks a continuing state. 门开着。Mén kāi zhe. — The door is (standing) open. 他站着看书。Tā zhàn zhe kàn shū. — He reads standing up. Note that this describes a state, not an action in progress.

在 marks an action in progress. 他在打电话。Tā zài dǎ diànhuà. — He's on the phone. Also 正在.

要……了 / 快……了 mark imminence. 火车快要开了。Huǒchē kuàiyào kāi le. — The train is about to leave.

Mechanism three: 不 and 没, which split the past from everything else

This is the one place where Chinese does force a time-related decision, and learners get it wrong for years.

• 不 negates habits, preferences, general truths and future intentions: 我不吃猪肉。Wǒ bù chī zhūròu. · 我明天不去。Wǒ míngtiān bú qù.
• 没 negates the occurrence of something: 我没去。Wǒ méi qù. — I didn't go / haven't gone.

Two consequences worth memorising. 没 never appears with 了: ✗ 我没去了 — the negation already carries the non-occurrence. And 有 is negated only with 没: 我没有钱, never ✗ 我不有钱.

Mechanism four: 是……的, for the circumstances of a past event

When the event itself is established and what is being discussed is how, when or where it happened, Chinese uses a frame:

• 我是坐火车来的。Wǒ shì zuò huǒchē lái de. — I came by train.
• 你是什么时候来的？Nǐ shì shénme shíhou lái de? — When did you arrive?
• 我是去年来的。Wǒ shì qùnián lái de.

French speakers will recognise the shape of "c'est en train que je suis venu". Treat it as a single chunk rather than as two grammar points.

So what is actually hard

The temptation to translate the tense. Every English or French verb form arrives with a tense already attached, and the instinct is to find its Chinese equivalent. There often is not one. "I have lived here for three years" is 我在这儿住了三年了 — not 过, because you still live here. "I used to smoke" is 我以前抽烟 — a time word and a bare verb.

The bare verb is genuinely correct, very often. This is the hardest thing for a learner from an inflecting language to trust. Habits, general truths, future events with a time word, verbs of state and cognition — all take no marker at all. 我喜欢中国菜。我每天走路上班。我明天去机场。 Adding 了 to any of these makes them wrong or changes their meaning.

Word order carries the weight that endings carried. With no agreement to hold a sentence together, position becomes meaning. Time before place, place before verb: 我明天在图书馆看书。Wǒ míngtiān zài túshūguǎn kàn shū. Coverbs before the verb: 我跟他说, 我用筷子吃. Modifiers before the noun, however long: 昨天我们在食堂看见的那个人 — "that person we saw in the canteen yesterday", all of it in front.

Topic is not subject. Chinese lets you front whatever the sentence is about: 这本书我看过了。Zhè běn shū wǒ kàn guo le. — That book, I've read it. This is not object-fronting for emphasis in the European sense; it is the ordinary organisation of Chinese discourse, and learning to use it is part of sounding like an adult.

How to practise the thing that has no forms

You cannot drill a paradigm because there is none. What works instead:

Audit your own output for over-marking. Write ten sentences, then go through and ask of every 了: what changed, or what is complete? If you cannot answer, delete it. Most learners' 了 count halves in this exercise, and their accuracy goes up.

Learn 不 and 没 as a pair, never separately, and always with a sentence attached.

Collect time expressions like vocabulary: 以前, 后来, 那时候, 从……开始, ……的时候, 一……就. These do the work that a pluperfect does, and they are learnable as items.

Read narrative. Aspect is a discourse phenomenon; it cannot be understood one sentence at a time. Read a story and notice where 了 clusters — at the events that move the plot — and where it disappears, in description and background.

Chinese did not make grammar easier. It moved it out of the word and into the sentence, where you cannot see it as a table. That is why the endings-free language takes longer to feel right than the one with sixteen tenses.