which为什么不能引导主语

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可以的，which和what的第二个区别：引导的句子成分不同。

which通常引导定语从句，在定语从句中作宾语。而what通常引导名词性从句，在名词性从句中作主语或宾语的成分。所以不论which和what都可以做主语没有这样告诉过你吧！要是真有人说过 which 不能这样用，那是胡扯。引导名词从句（主语从句、宾语从句、表语从句和同位语从句）的which有两种词性：名词性和形容词性。下面以宾语从句为例：名词性：He told me which was larger. 他告诉过我哪一个最大。【主语，指代上文提到过的两种东西】Choose which you like best. 选你最喜欢的吧。【like的宾语，指代指代上文提到过的几种东西】形容词性I know which girl won the prize. 我知道哪一个女孩子得了奖。【定语，修饰名词girl】二、what 是关系代词性连接代词，相当于“先行名词 + 关系代词 ”，即 something that、that which，the word which 等，意思是“所...的东西（事情、话语等）”。说明 what 中包含了先行词和关系代词。如：宾语从句——Please tell me what happened after that. 告诉我那以后做发生的事情。（= 定语从句 Please tell me that which happened after that. 请告诉我那以后发生的那件事。）主语从句——What he said is not all right. 他所说的不完全对。（=定语从句 The word which he said is not all right. 他说的那句话不完全对

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为学老陈建造师

关系代词which在定语从句中通常只用于指事物，不用于指人。

它在句子中主要用作主语或宾语，有时还可在定语从句中用作定语。那么有哪些情况下不能使用which呢

1.当先行词为all, little, much, few, everything, none 等不定代词时关系代词用that而不用which.

如：I will tell him all that you told me at the ball.

There are few books that you can read in this book store.

2.当先行词有序数词修饰时,关系代词用that, 不用which.

The first sight that was caught at the Great Wall has made a lasting impression on him. 5.当先行词被the only, the

very, the same, the right等修饰时,关系代词用that,不用which.

That is the very thing that we can do.

It is the only book that he bought himself.

3.当先行词既有人又有物时,关系代词用that, 不用which.

He asked about the factories and workers that he had visited.

4.当先行词有形容词最高级修饰时,关系代词用that, 而不用which.

This is the best novel that I have ever read.

Guilin is one of the most beautiful cities that I have ever visited.

5.当先行词被all, every, any, much, little, few, no等修饰时,关系代词用that,不用which.

You can take any room that you like.

There is no clothes that fit you here.

6.当主句是以which开头的特殊问句时,定语从句关系代词一般用that而不用which.

Which of the books that had pictures was worth reading

其他回答

为学老陈建造师

which可以引导主语从句。which 主要强调的是哪一个而what主要强调的是什么