我们班有许多外国学生，一些来自欧洲，一些来自美洲。

There are many foreign students in our class. Some of them are from Europe, others come from America.

15. make…+adj /n

北京拥有一千三百万人口，使它成为中国最大的城市之一。

Beijing has a population of 13 million, making it one of the largest cities in China.

我们所做的可以让世界更美丽。

What we do will make the world more beautiful.

16. not…until

直到他告诉我发生的事，我才了解真相。

I didn’t know the truth until she told me what happened.

昨天我直到深夜才睡。

Yesterday I didn’t go to sleep until midnight.

17. as if

他夸夸其谈好像什么事都知道。

He talks a lot as if he knows everything.

好像我是第一个到校的人。

It seems as if I am the first one arriving at school.

18. It is no use (good) doing…

没考虑清楚就讲是不好的。

It’s no good talking without thinking carefully.

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.

我认为有工作经验很重要。

I feel it important to have some working experience.

我要在这么短的时间内做完所有的题是不可能的。

I found it impossible for me to work out all the problems in such a short time.

20. It is + time since…

我从这所学校毕业已经十年了。

It is ten years since I graduated from this school.

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.

我离开医院时已经是半夜了。

It was midnight when I left the hospital.

22. It is + time before…

不久我们就会再见面的。