act重要短语用法集注

1 act as 担任，充当，起……的作用。如：

A trained dog can act as a guide to a blind person. 经过训练的狗可以担任盲人的向导。

表示担任独一无二的职务，其前通常不用冠词。如：

He acted as manager in my absence. 我不在时他担任经理。

I don’t understand their language; you’ll have to act as

interpreter. 我不懂他们的语言，你得当翻译了。

2 . act for 代理，代为。如：

Please act for me during my absence. 我不在时请代理我处理事务。

I acted for our captain while he was in hospital. 我们队长住院时由我代理他。

3 . act out 表演出来。如：

Let’s act out the story of the three bears once more. 让我们再把这三只熊的故事表演一次吧。

4 . act on 对……起作用，对……有效。如：

The drug acts on the stomach. 这药对胃有效。

Alcohol acts on the nervous system. 酒精对人的神经系统有影响。

5 . in the act 当场，正在动作时。如：

He was in the very act of starting. 他正准备动身。

He was caught in the act . 他被当场抓住。