at once 中文意思、发音与例句

More examples更多例句

AI examples

1
When the fire alarm rang, we left the building at once.
火警警报响起时，我们立刻离开了大楼。
2
Please call me at once if you hear any news.
如果你听到任何消息，请立刻给我打电话。
3
She recognized the mistake and corrected it at once.
她发现了错误，并立刻改正了它。

祈使句中常用。

Go at once.

立刻去。

You must answer at once.

你必须立刻回答。

也可用于过去时。

He left at once.

他立刻离开了。

grammarmedium

Not this

I have been to Beijing at once.

Use this

I have been to Beijing once.

“at once”表示“立刻”，不表示“一次”。表示“一次”应用“once”。

grammarmedium

Not this

At once I finish, I will call you.

Use this

As soon as I finish, I will call you.

“at once”是副词短语，不能用作连词引导时间状语从句。表示“一…就…”应用连词“as soon as”。