单词详解

1. adv. 一次，一趟； 一倍 (on one occasion)

I play computer games once a week. 我每周玩一次电脑游戏。

2. conj. 一旦……就……(as soon as)

 Once you are late for the party, your girl friend will be very angry.

 一旦你去聚会迟到了，你的女友就会很生气的。

相关词组

1. once again 再一次

I'll tell you how to do it once again. 我会再给你讲一遍怎么做这件事。

2. once and for all 永远地

Tom's back home once and for all. 汤姆回到家就再也不走了。

3. once in a while 偶尔

He went to see his father once in a while. 他有时去看望他父亲。

4. once more 再一次，重新

Tom's back home once more. 汤姆再一次回家了。

5. once or twice 一两次

I've been there once or twice. 我去过那里一两次。

6. once upon a time 很久以前

Once upon a time there lived a king who had ten sons. 很久以前有个国王,他有十个儿子。

相关单词

近义词：formerly, single, ago

相关链接

词语辨析： once, as soon as

once, as soon as

都表示“……就……”。

once: 译为“一旦 ……就 ……” ，既表 时间也可表示条件。

as soon as: 译为“刚……就……”，通常强调的是时间。

词语详解

1 . once: 译为“一旦……就……”，既表时间也可表示条件。

Once you get into a bad habit, you'll hard to get out of it.

你一旦染上不好的习惯，想再改掉就困难了。

2. as soon as: 译为“刚……就……”，通常强调的是时间。

As soon as I get to Shanghai, I’ll write to you. 我一到上海就给你写信。