关系代词作主语可以省略吗
关系代词作主语可以省略吗？
在学习定语从句的时候我们都知道，引导定语从句的关系代词作宾语，关系代词常可省略，使句子显得更简明。那么在定语从句中作主语的关系代词可以省略吗？
实际上，省略作主语的关系代词的情况是存在的，尤其是在口语中更普通。那么，在哪些情况下，作主语的关系代词可以省略主语呢？
1．在以There ’s, Here’s 开头的存在句中：
There ’s a man at the door [who] wants to see you.
门口有人要见你。
There ’s a table [that] stands in the corner.
角落里放有一张桌子。
Here ’s a lady [who] called about a cat.
有位太太为着猫的事来访。
There ’s a lot [that] goes on aboard this ship that I don’t like.
在这船上有很多事我不喜欢。
2． 关系代词引导的定语从句是there is (are)时：
She taught me the difference [that] there is between what is right and what is wrong. 她教了我好坏的区别。
The number of mistakes [that] there are in this homework is simply astounding. 在这份课外作业中错误多得惊人。
I have see all [that] there is left to see in the city.
在市内未看完的东西我全部看了。
The 9.15 is the fastest train [that] there is to Oxford.
九点十五分的那班火车是开往牛津的最快的火车。
Kent is supposed to be a gifted footballer [that] there has ever been.
Kent 被大家认为是所有球员中的一位有天赋的球员。
在这种情况下，如果要将关系代词补充出来，无论指人还是指物，都应该用that ，不用which 或who.
3． 有插入语I know, we think ，you say等时：
Is this the one you say was born blind? ( NIV圣经约翰福音9章19节)
Many of those qualities [that] we think are typical of Americans in general were the result of this frontier life.
可认为是美国人一般的特征的许多那样的气质，是从边疆拓荒生活中产生出来的。 She is just the type [that] I always knew would attract him.
她确是我知道的能吸引他的那种典型的女性。
4． 在it is……that 强调句及that is 引起的句子中， that 也可省略。
It is John
[who]
It isn’t everybody can learn a foreign language so easily.
并不是每个人都能够那么轻松地学习外语。
That was his brother just went by.
刚刚过去的就是他的哥哥。
这种用法只限于口语。
除了以上关系代词作主语的省略外，作表语的关系代词也可省略。 He ’s changed. He is not that man [that] he was.
他变了。他不再是从前的那个样子了。
I ’m not the fool [that] you thought me (to be).
我并不是如你所想的那种傻子。
作表语的关系代词如果不省略，只能使用that ，不能使用which 或who 。
以上用法，只限于限定性定语从句，不能用于非限定性定语从句。