Sentence pattern · Band 1

了 at the end: something is different now

句子 + 了

了 at the end of a sentence is a little news alert: something is different now. It started raining. He was a student, and today he teaches. English would build a whole new sentence; Mandarin drops one 了 and lets the change speak. It is not a past tense sticker; it flags a new situation.

Hear it in a sentence

外边下雨了。Wàibian xià yǔ le.It started raining outside.
他现在是老师了。Tā xiànzài shì lǎoshī le.He is a teacher now.
我不想吃饭了。Wǒ bù xiǎng chī fàn le.I do not want to eat anymore.
你儿子几岁了？Nǐ érzi jǐ suì le?How old is your son now?

Mistakes people make

Not this我昨天很忙了。Wǒ zuótiān hěn máng le.Say this我昨天很忙。Wǒ zuótiān hěn máng.

了 announces a change, not the past; being busy yesterday is plain history, no news flash needed.

Words in this pattern

了le雨yǔ岁suì

Quick answers

What does 了：情况变了 mean?

了 at the end of a sentence is a little news alert: something is different now. It started raining. He was a student, and today he teaches. English would build a whole new sentence; Mandarin drops one 了 and lets the change speak. It is not a past tense sticker; it flags a new situation.

How do you build it?

句子 + 了

What is the most common mistake?

我昨天很忙了。 → 我昨天很忙。

了 announces a change, not the past; being busy yesterday is plain history, no news flash needed.

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