19. in common(和……)有共同之处，共用。　 be common to sb. 是与某人所共有的

The two sisters have nothing in common. 两姐妹没有什么共同之处。

In this situation it is common to say that nothing can be done until law and order is restored. 一般来说在这种形势下，不恢复法律和秩序是什么也干不了的。

18. commit oneself to 使自己承担……　 commit sb. to prison把某人送进监狱；commit one’s idea to writing 把某人的想法写下来；commit a matter to a committee 把某事交给委员会讨论

She committed herself to science. 她专心从事科学事业。

17. comment on 评论

Downing Street has so far refused to comment on these reports. 英国政府对这些报道迄今不予置评。

16. round the clock(=all day and all night, usually without stopping)昼夜不停地

Surgeons are working round the clock to save his life. 外科医生们正在日夜工作以抢救他的生命。

15. charge…for 因……索取(费用)，charge sb. with sth. 控告某人犯有……

As long as you’ve paid in advance we won’t charge you for delivery. 只要你预先付款，我们就不收你送货费。

Bill was charged with murderer. 比尔被指控谋杀。

14. in charge of(=responsible for)负责(某事)

in the charge of …由……管

take charge of(=to be or become responsible for)负责管理(照顾)

Mr. Zhang was in charge of the shop while the manager was away. 经理不在时，张先生负责这个商店. =The shop was in the charge of Mr. Zhang while the manager was away.

13. center one’s attention on(=focus one’s attention on)把某人的注意力集中在……上　

You should focus your attention on your work. 你应该把注意力放到工作上。

12. be cautious of 谨防

She is cautious of telling secrets. 她很谨慎，不会泄露秘密。

11. in case(=for fear that)万一；in case of(=in the event of)如果发生……万一　 in the case of 至于……，就……而言 in no case在任何情况下都不(倒装句放句首)

In case you need something, please don’t hesitate to let me know. 如果你需要什么东西，请别客气，尽管跟我说。

In case of emergency, break the glass and press the button. 遇到紧急情况时，击碎玻璃罩并摁下按钮。

I will reveal your secret in no case. 我决不会泄漏你的秘密。

10. in any case(=for love or money, at any rate, at any price, at any cost, whatever happens; anyhow)无论如何

In any case he can not give up it. 他无论如何也不会放弃它。