在定语从句中which和that的用法区别

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) The first place that they visited in London was the Big Ben.
3. 当先行词被形容词最高级修饰时
(1) This is the best film that I have seen.
4. 当形容词被the very, the only修饰时
(1) This is the very dictionar5. 当先行词前面有who, which等疑问代词时
(1) Who is the man that is standing there?
(2) Which is the T-shirt that fits me most?
6. 当先行词既有人，也有动物或者物体时
(1) Can you remember the scientist and his theory that we have lear只能用which
在介词后面的关系代词用which而不能用that。即“介词+which（代物）”
1.The picture for which he paid $1,000 was once owned by a duke.
【他花了1000美元买下的画曾为一名公爵所拥有。】

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 don