When... then... with 等…就

Use this pair to say that one action will happen when another time or event arrives.

elementaryA2 · TOCFL a2timegrammar

等…就

Pattern

等 + time / event, 就 + action

Key words

Core idea

等…就… links a waiting point with what happens after it. It is close to “when...” or “once...” in English.

The clause gives the condition or time. introduces the action that follows.

Usage boundary

This pattern is useful when the second action depends on the first event happening. It does not mean “wait” as an action by itself unless the sentence also clearly says someone is waiting.

Word order note

Put before the action that happens next. It helps the sentence feel immediate and connected.

Examples

等你到了,我就走。

Děng nǐ dào le, wǒ jiù zǒu.

When you arrive, I will leave.

等雨停了,我们就出门。

Děng yǔ tíng le, wǒmen jiù chūmén.

When the rain stops, we will go out.

等老师来,我就问他。

Děng lǎoshī lái, wǒ jiù wèn tā.

When the teacher comes, I will ask him.

Common mistakes

Avoid

等你到了,我走就。

Use

等你到了,我就走。

就 comes before the action that follows the 等 clause.

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