1) It was the first time in a year and a half that I had seen the night face to face. (从句时态用完成时) 这是我一年半以来第一次目睹夜晚。

2) I wonder if it’s because I haven’t been able to be outdoors for so long that I’ve grown so crazy about everything to do with nature.(强调句) 我不知道这是不是因为我长久无法出门的缘故，我变得对一切与大自然有关的事物都无比狂热。

3) I stayed awake on purpose until half past eleven one evening in order to have a good look at the moon for once by myself. 有一天晚上，我熬到11点半故意不睡觉，为的是独自好好看看月亮一次。

4) Your friend, who doesn’t work hard, asks you to help him cheat in the end-of-term exam.(非限制性定语从句) 你的一个朋友叫你在期末考试中帮他作弊，这个朋友平常不认真学习。

5) If you have some trouble (in) getting along with your friends, you can write to the editor and ask for advice. 如果你在和朋友的相处上有问题，你可以写信给编辑向他征求建议。

6) Add up your score and see how many points you can get. 把你的得分加起来，看看得了多少。

7) What he did has added to our difficulties. 他的所作所为增加了我们的困难。

8) His income adds up to $1000 a month. 他每月的收入共计1000美元。

9) It's no pleasure looking through these any longer because nature is one thing that really must be experienced. 观看这些已不再是乐趣，因为大自然是你必须体验的。

10) Why is she so concerned about his attitude to her work? 她为什么那么关注他对她的工作的看法?

11) The police asked him to set down what he had seen in a report. 警察让他在报告中写下他所看见的事情。

12) As I was about to go out and search for him, he happened to come in. 正当我打算出去找他时，他恰巧进来。

13) Mr. Jones lives alone and often feels lonely. 琼斯先生单独一人生活，常常感到孤独。

14) We tried to calm him down, but he kept crying. 我们试图让他平静下来，但他仍不停地哭着。

15) Does he dare (to) go out at night in such stormy weather? 他敢在这样一个暴风雨夜外出吗?

16) He would go through fire and water for his country. 他愿为国家赴汤蹈火。

17) That country suffered a heavy loss in the flood. 那个国家在水灾中遭受严重的损失。

18) World Englishes come from those countries where English plays an important role as a first or second language, either because of foreign rule or because of its special role as an international language.(定语从句) 世界英语来自那些以英语为第一或第二语言的国家，英语在这些国家起重要作用，或是因为外国的统治，或是因为其作为国际语言的特殊地位。

19) All languages change when cultures communicate with one another. 当不同的语言互相沟通时，所有的语言都会发生变化。

20) Actually, the English spoken between about AD 450 and 1150 was based more on German than present day English.实际上，从公元450年到1150年，人们所说的英语更多的是以德语为基础的，而现代英语不是。

21) Would you please come up to my flat for a visit? 请到我的公寓里来坐坐，好吗?

22) Believe it or not, he cheated in the exams. 信不信由你，他在考试中作弊。

23) Native English speakers can understand each other even if they don’t speak the same kind of English.

以英语作为母语的人，即使他们所讲的语言不尽相同，也可以互相交流。

24) Today the number of people learning English in China is larger than even before. 目前在中国学习英语的人数比以往任何时候都多。

25) It is the duty of a government to provide education for the children of its country. (it作形式主语)政府的责任是为其国家的小孩提供教育。

26) Reading is one of the best ways of improving your vocabulary and usage. 阅读是帮助你改善词汇及其用法的最好方法之一。

27) Giving commands is less polite than making a request. 发号命令比发出请求粗鲁。

28) We asked her for directions and she told us to go round the corner on the left and keep going straight for two blocks. 我们向她问路，她告诉我们往左边拐弯后直走两个街区。

29) He knows several languages, such as English, French and German. 他懂几种语言，例如英语、法语和德语。

30) My sister and I have dreamed about cycling along the Mekong River from where it begins to where it ends. 我姐姐和我一直梦想要沿湄公河从源头到终点骑车旅行。