以下为定语从句中十种应该用that而不用which的情况：
一、先行词为不定代词,all,much,something,everything,anything,nothing,none,the one等。
例句：Have you got something (that) he wanted? 你已经得到他想要的东西了吗?
二、先行词被only, any, few, little, no, just, very, one of等词修饰时。
例句：You can keep any books that you find. 你可以保留你找到的任何书。
三、先行词是序数词时或被序数词修饰时。
例句：When they talked about Wuxi, the first that came into my mind is Tai Lake.当他们谈到无锡时，我首先想到的是太湖。
四、先行词是最高级或被最高级修饰时。
例句：She is the most beautiful girl in the world.她是世界上最漂亮的女孩。
五、先行词既有人又有物,用which和who都不适合,这时宜用that。
例句：The writer and his novel that you have just talked about is really well known .你刚才谈到的那个作家和他的小说真的很有名。
六、被修饰词为数词时。
例句：Yesterday my father caught two fish and put them in a basin of water .Now I can see the two that are still alive .昨天我父亲抓了两条鱼，把它们放在一盆水里，现在我可以看到那两条鱼还活着。
七、如果有两个从句,其中一个关系代词已用which ,另一个关系代词宜用that,以避免语言的单调或重复。
例句：Ben built up a factory which produced things that had never been seen before. Ben建了一家工厂，生产以前从未见过的东西。
八、疑问词是who或which,关系代词宜用that,以避免重复。
例句：Which is the book that you like best?你最喜欢哪本书？
九、主句是There be 结构,修饰其主句的定语从句宜用that 作关系代词。
例句：There is still a seat in the corner that is still free.角落里还有一个空座位。
十、被修饰成分为表语时,或者关系代词本身是定语从句的表语时,该关系代词宜用that。
例句：That's a good book that will help you a lot.这本好书对你有很大帮助。
扩展资料：
定语从句中宜用which而不宜用that 的情况：
1、引导非限制性定语从句时。
2、当关系词前有介词时。
3、在一个句子中有两个定语从句，其中一个定语从句的关系代词用了that, 另一个应用which。
4、当关系代词后面有插入语时。
5、先行词为that时。
介词后只能用which不能用that
先行词为 xxx-thing 时只能用that
先行词被the only（含序数词）等限定词修饰时只能用that
先行词被最高级修饰时只用that
具体的说：限制性定语从句只能用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，或者是由every, any, all, some, no, little, few, much 等修饰时
(1) Have youtaken down everything that Mr. Li has said?
注意：当先行词指人时，偶尔也可以用who
(1) Any man that/.who has a sense ofduty won't do such a thing.
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 dictionary that I want to buy,
当先行词指人时，偶尔也可以用who
(1)Wang Hua is the only person in our school who will attend the meeting/
5. 当先行词前面有who, which等疑问代词时
(1)Who is the man that is standing there?
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 learned?
that与which的用法区别
两者都可指物，常可互换。其区别主要在于：
1. 引导非限制性定语从句时，通常要用which：
2. 直接放在介词后作宾语时，通常要用which：
3. 当先行词是下列不定代词或被它们修饰时much, little, none, all, few, every(thing), any(thing), no(thing) 等时，通常用that：
4. 当关系代词在定语从句中用作表语时，通常用that：
China is not the country (that) it was. 中国已不是过去的中国了。
5. 当要避免重复时：
Which is the course that we are to take? 我们选哪门课程？本回答被网友采纳
先行词为 xxx-thing 时只能用that
先行词被the only（含序数词）等限定词修饰时只能用that
先行词被最高级修饰时只用that
具体的说：限制性定语从句只能用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，或者是由every, any, all, some, no, little, few, much 等修饰时
(1) Have youtaken down everything that Mr. Li has said?
注意：当先行词指人时，偶尔也可以用who
(1) Any man that/.who has a sense ofduty won't do such a thing.
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 dictionary that I want to buy,
当先行词指人时，偶尔也可以用who
(1)Wang Hua is the only person in our school who will attend the meeting/
5. 当先行词前面有who, which等疑问代词时
(1)Who is the man that is standing there?
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 learned?
that与which的用法区别
两者都可指物，常可互换。其区别主要在于：
1. 引导非限制性定语从句时，通常要用which：
2. 直接放在介词后作宾语时，通常要用which：
3. 当先行词是下列不定代词或被它们修饰时much, little, none, all, few, every(thing), any(thing), no(thing) 等时，通常用that：
4. 当关系代词在定语从句中用作表语时，通常用that：
China is not the country (that) it was. 中国已不是过去的中国了。
5. 当要避免重复时：
Which is the course that we are to take? 我们选哪门课程？
一、先行词为不定代词,all,much,something,everything,anything,nothing,none,the one等。
例句：Have you got something (that) he wanted? 你已经得到他想要的东西了吗?
二、先行词被only, any, few, little, no, just, very, one of等词修饰时。
例句：You can keep any books that you find. 你可以保留你找到的任何书。
三、先行词是序数词时或被序数词修饰时。
例句：When they talked about Wuxi, the first that came into my mind is Tai Lake.当他们谈到无锡时，我首先想到的是太湖。
四、先行词是最高级或被最高级修饰时。
例句：She is the most beautiful girl in the world.她是世界上最漂亮的女孩。
五、先行词既有人又有物,用which和who都不适合,这时宜用that。
例句：The writer and his novel that you have just talked about is really well known .你刚才谈到的那个作家和他的小说真的很有名。
六、被修饰词为数词时。
例句：Yesterday my father caught two fish and put them in a basin of water .Now I can see the two that are still alive .昨天我父亲抓了两条鱼，把它们放在一盆水里，现在我可以看到那两条鱼还活着。
七、如果有两个从句,其中一个关系代词已用which ,另一个关系代词宜用that,以避免语言的单调或重复。
例句：Ben built up a factory which produced things that had never been seen before. Ben建了一家工厂，生产以前从未见过的东西。
八、疑问词是who或which,关系代词宜用that,以避免重复。
例句：Which is the book that you like best?你最喜欢哪本书？
九、主句是There be 结构,修饰其主句的定语从句宜用that 作关系代词。
例句：There is still a seat in the corner that is still free.角落里还有一个空座位。
十、被修饰成分为表语时,或者关系代词本身是定语从句的表语时,该关系代词宜用that。
例句：That's a good book that will help you a lot.这本好书对你有很大帮助。
定语从句中，什么时候用that，而不用who和which？记住这3种情况