在定语从句中which和that的用法区别不要把有关定语从句的内容全部堆上来我只问什么时候只能用that,什么时候只能用which最好举一二个例子就可以了thanx

定语从句只能用that 的几种情况
1．当先行词是anything, everything, nothing (something 除外), few, all, none, little, some 等代词时
2. 当先行词被序数词修饰
3. 当先行词被形容词*修饰时
4. 当形容词被the very, the only修饰时
6. 当先行词既有人，也有动物或者物体时

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在限制性定语从句中，当先行词指物时，关系词可用which或that，二者常可以互换；但在下列情况中，只能用that，不用which：
(1) 当先行词是all, a lot, (a) little, few, much, none, anything, something, everything, nothing等词时。如：
All that can be done has been done.
In this factory I saw little / much that was different from ours.
(2) 当先行词被all, any no, much, little, few, every等限定词所修饰时。如：
We heard clearly every word that he said.
(3) 当先行词是序数词或被序数词所修饰时。如：
The first thing that should be done is to get the tickets.
When people talk about Hangzhou, the first that comes to mind is the West Lake.
(4) 当先行词是形容词*或被形容词*所修饰，以及先行词被序数词和形容
词*同时修饰时，如：
Is that the best that you can do?
That’s the most expensive hotel that we’ve ever stayed in.
This novel is the second best one that I have ever read.
(5) 当先行词被 the very, the only, the next, the last等所修饰时。如：
This is the very book that I want to find.
(6) 当先行词为指人和指物的两个并列名词词组时。如：
The guests spoke highly of the children and their performances that they saw at the Children’s Palace.
She described in her compositions the people and places that impressed her most.
(7) 当主句是以which开头的特殊疑问句时。如：
Which is the car that killed the boy?

当先行词既有表示人的名词，又有表示物的名词时，关系代词必须用that.
当先行词前有*修饰时，关系代词用that .

定语从句只能用that 的几种情况1．当先行词是anything,everything,nothing (something 除外),few,all,none,little,some 等代词时,Have you taken down everything that Mr.Li has said?2.当先行词被序数词修饰 (1) T...