假装不懂规则是行不通的。
It’s no use pretending that you didn’t know the rules.
19. find it adj to do…
我觉得作听力时有必要作笔记。
I find it necessary to take down notes while listening.
20. It is time since…
我已经有两年没见他了。
It is two years since I last met him.
21. It is time when…
我到电影院时已经八点钟了。
It was 8 o’clock when I got to the cinema.
22. It is time before…
不久我们就会再见面的。
I won’t be long before we can meet again.
23. It is…that…
我最珍视的是友谊。
It is friendship that I value most.
24. It is n / adj that / to do…
每个人都必须懂得如何使用计算机
It is a must that everybody should know how to use computers.


