which在定语从句中有具体含义吗
定语从句有比较级用that还是which？
定语从句有比较级用that还是which？
定语从句比较级一般应用whitch
which在定语从句中做什么成分？
which在定语从句中是关系代词，在从句可以作主语或者宾语。当which作宾语时可以省略。
例句：
1.A plane is a machine which can fly.
which在从句中作主语，指代先行词machine.
book which I bought last Sunday is very intetesting.
which在从句中作宾语，指代先行词book.关系代词作宾语可以省略。
was late for school again, which made his teacher very angry.
which在从句中作主语，指代整个主句.
同位语什么情况用which？
在同位语从句中,不能用which引导。
英语中引导同位语从句的词有连词 that,whether,连接副词 how,when,where等.
（注：if,which 不能引导同位语从句).而which【不是连词】,连词在句中不做句子成分.which在定语从句中是【关系代词】,在特殊疑问句中是【特殊疑问代词】,【关系代词】和【特殊疑问代词】在句中要做句子成分
“which”的用法是：
1、(用作疑问代词)哪一个,哪一些
Which is my seat?
哪个座位是我的?
2、(用做关系代词)那一个,那一些
He also had a gun with which to defend himself.
他还有一把自卫用的枪。
3、（用作疑问形容词)哪一个,哪一些
Which university did you go to, Oxford or Cambridge?
你上过哪所大学?牛津还是剑桥?
4、(用作关系形容词)这个,这些
The doctor told him to give up smoking, which advice he took.医生叮嘱他戒烟,他接受了这一忠告。
that和which都可引导定语从句,但以下情况引导定语从句的关系代词只能用that不能用which。
1、当先行词是all, everything, nothing, anything, little等不定代词,或被first, last, only, few, much, some, any, no等词修饰时,应该用关系代词that,不用which。
2、当先行词为形容词最高级所修饰时,关系代词用that不用which。
3、当并列的两个先行词分别表示人和物时,要用关系代词that而不用which。
4、在强调句型“It is〔was〕〔who〕...”中,只能用that,不能用which。