4．drive away 赶走；驱赶

　　5．move on(to sth.) 开始做(别的事)

　　6．participate in 参加

　　7．take on 接纳

　　8．work out 锻炼；计算出

　　Ⅳ.选词填空

　　选用上述短语的适当形式填空。

　　1．He took on more workers during the harvest.

　　2．He was cruel because he wanted to drive me away．

　　3．Mr Zhang is said to be ill in hospital，who will be in charge of your class?

　　4．Any substance is made up of atoms whether it is a solid，a liquid，or a gas.

　　5．I'll have to participate in a sporting activity that day.

　　1．If you want to be an actor，there are certain things you will need to know before you can be in a play.

　　如果你想要成为一名演员，在你可以参与演出前你要知道某些东西。

　　[记句式结构]

　　before conj.在......之前，常用来引导时间状语从句。

　　[仿写促落实]

　　You had better check it before you turn in your papers．

　　交试卷之前，你最好检查一下。

　　2．Experts say that the positive feelings produced by laughter not only make us happy but also help us reduce pain.

　　专家说笑产生的积极情感不但让我们感到愉快，而且帮助我们减轻疼痛。

　　[记句式结构]

　　not only...but also..."不但......而且......"，用于连接两个对称的并列成分。

　　[仿写促落实]

　　He not only writes his own plays, but also acts in them.

他不仅自编剧本，而且在其中担任角色。