15. a certain = some　 某　　　　 a Mr.Tom = a certain Mr.Tom = some Mr.Tom

be certain to do确实　 make certain that　　

　It's certain that...　 for certain = for sure 的确

14. the opening ceremony 开幕式　　 the closing ceremony

13. cause = lead to = result in = bring about 造成　　 cause sb to do 造成…去做…　

the reason why/for　　 the cause of　　　 the cause of world peace　 世界和平事业

12. catch sb by the arm抓住…手臂　　　 catch a cold 感冒　　 catch fire 着火　

catch sb doing 抓住…正在做…　 I didn’t catch what you said.

catch one's eye/attention 引起…注意　 catch sight of 一看到　 catch/keep up with 跟上

11. cast a vote 投票　　 cast a net 撒网　　　　 Snakes cast their skin.蛇褪皮。

10. in this/that case 在那种情况下　　 in most cases 在大都数情况下　　 in no case 绝不

in any case　 无论如何 eg: In any case , try to do it.　 in the case of my mother.以我母亲为例。

9. carry sth away 带走　　　 carry out 实施　　 carry on 继续 进行；经营　　　

8. be careful in doing小心的，仔细的　　　 be careful of sth　　

be careful to do　　　 be careful with fire　　　 be careful with your work/study

7. take care 当心　　 take care of = look after 照顾　　　 do sth with care　 很小心做…

care about 介意　　　　 care for 担心；照顾；喜欢

6. a capable man = an able man能干的　　　 be capable of doing = be able to do