Question

at once用什么语态

Answer 1

用一般现在时、现在进行时、一般将来时、一般过去时。

at once的意思：立刻；立即；同时；一起。once用法：用于修饰动词，通常放在宾语后。用作连词，引导时间状语从句，注意从句要用现在时表示将来意义。

once造句：

1、Once (it is) printed, the book will be very popular.

一旦出版，这本书会大受欢迎。

2、Once you let him start talking, there was no stopping him.

一旦让他开始讲话，就没法止住他。

3、Once having made a promise, you should keep it.

你一旦许下诺言，就该遵守。

4、Once you have learned Spanish, you will find Italian easy.

一旦你学会西班牙语，你会觉得意大利语容易。

5、Once (he was) in the examination hall, he forgot about all this.

他一进考场，这一切他都忘了。