在定语从句中which和that用法区别：
在定语从句中，which 和that 在指代事物时，一般可以互换使用，但并非在任何情况下都是这样，几种宜用that,而不宜用which 的情况如下：
1、先行词为不定代词,all,much,something,everything,anything,nothing,none,the one等。
2、先行词被only, any, few, little, no, just, very, one of等词修饰时。
3、先行词是序数词时或被序数词修饰时。
4、先行词是最高级或被最高级修饰时。
5、先行词既有人又有物,用which和who都不适合,这时宜用that。
6、被修饰词为数词时。
7、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。
8、疑问词是who或which,关系代词宜用that,以避免重复。
9、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。
10、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。
定语从句中宜用which而不宜用that 的情况：
1、当关系代词的前面有介词时。
2、在非限制性定语从句中。
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, 另一个宜用which。
4、当关系代词后面带有插入语时。
5、先行词本身是that, 宜用which。
6、先行词是those+复数名词。
拓展资料
which
1、Which do they want me to do? declare war or surrender?
他们想让我做什么，宣战还是投降？
2、I wanted to know which school it was you went to
我想知道你上的是哪所学校。
3、Soldiers opened fire on a car which failed to stop at an army checkpoint
士兵向那辆拒绝在军事检查站停车检查的汽车开了火。
4、They ran out of drink. Which actually didn't bother me because I wasn't drinking
他们把酒喝完了。但实际上这对我来说无所谓，因为我不喝酒。
that
1、They said you particularly wanted to talk to me. Why was that?
他们说你特别想和我谈谈。为什么？
2、The story was published in a Sunday newspaper later that week
这篇报道于那周晚些时候刊登在一份周日报纸上。
3、A recession like that of 1973 – 1974 could put one in ten American companies into bankruptcy
像1973–1974年间那样的经济衰退能让1/10的美国公司破产。
4、'She said she'd met you in England.' — 'That's true.'
“她说她在英格兰见过你。”——“是的。”