你是个学生吗？是的，我是（个学生）。（省略了a student）

I am happy if you are.

如果你高兴，我就高兴。（省略了happy）

You must also be a football fan, since your brother is.

既然你兄弟是个足球迷，你必定也是。（省略了a football fan）

4.在由"than"引导的从句中的省略

在由"than"引导的表示比较的状语从句中，省略的情况是很普通的，只要意义明确，凡是与主句中相同的成分通常都可以在从句中省去。如：

Tom is taller than Bell(is).

汤姆比贝尔高。（省略了tall）

Bill enjoys reading more than Tom.

比尔比汤姆更喜欢看书。（省略了enjoys reading）

My sister speaks English more fluently than anyone else in her class.

我姐姐讲英语比她们班任何人讲得都好。（省略了speak English）

The film is much more interesting than I expected.

这部电影比我预料的有意思得多。（省略了that the film was）

5.在动词不定式符号"to"后的省略

动词不定式符号"to"后面的动词或动词短语在句中重复出现时，往往可以省略，使语言表达更为精炼。常用的这类动词有ask, forgot, hate, hope, invite, like, love, persuade, refuse, tell, try, want, wish等。如：

I wanted him to go with me, but he refused to.(=to go with me)

我想叫他和我一起去，但他拒绝那样做。

I meant to write to you, but I forgot to.(=to write to you)

我曾打算给你写信，但忘记那样做了。

He wanted to leave before the class was over, but I told him not to.(to leave before the class was over)

他要在下课前离开，但我告诉他不要那样做。

6.在疑问词后的省略

who, which, when, where, why, how, what等疑问词在引导从句时，其后的成分如与句子中出现的成分相同，往往可以省去。如：

Someone has cleaned the classroom, but I don't know who.(=who has cleaned the classroom)有人打扫了教室，但我并不知道是谁。

They are going abroad soon, but I don't know when.(=when they are going abroad)他们不久就要出国了，但我不知道具体时间。

One of the ministers was a graduate of our school, but I forgot which.(=which was a graduate of our school)

这些部长中有一位是我校的毕业生，但我忘记是哪一位了。

7.在复合句中的省略

复合句中某些成分省略的情形也是很多的。在回答问题时我们常这样说：

-Can you come with your husband this afternoon?

今天下午你和你丈夫能一道来吗？

-I am afraid not.

恐怕不能。（=I am afraid that I can not come with my husband this afternoon.)

-Did you know anything about it?