定语从句是八大从句之一，同时也是我们初中英语语法中最重要的一个知识点，接下来我们学大教育的专家们就给大家带来初中英语定语从句详细讲解。希望这些详细的讲解可以很好的去帮助我们大家面对初中英语定语从句的学习。
初中英语定语从句
1)who: 当先行项指人时，在定语从句中作主语。
eg: The student who answered the question was John.
The man who was here yesterday is a artist.
2)whom: 当先行项指人时，在定语从句中作宾语。
eg: The man whom I saw is called Smith.
The professor whom you wish to see has come.
3)which: 当先行项指物时，在定语从句中作主语、宾语。
eg: This is the book which has been translated into many languages.(主语)
He doesn’t know the rule which everybody knows.(宾语)
4)that: 当先行项指人、物时，在定语从句中作主语、宾语。
eg: The building that stands over there is a hospital.
The letter that I received form him yesterday is very important.
Is he the man that sells eggs?
He is the man that we are looking for.
注：先行项指物时，只用that的情况
① 先行项有形容词最高级修饰
eg: It is the largest map that I’ve ever seen.
This is the most interesting book I’ve ever read.
② 先行项有序数词修饰
eg: It’s the first book that won the prize.
The first place that they visited in Guilin was Elephant Trunk Hill.
③ 先行项有the only, the very, the same修饰
eg: This is the very computer that I want.
He is the only one among us that knows Spanish.
That’s the same man that asked for help the day before yesterday.
④ 先行项有不定代词修饰
eg: All the apples that fell down were picked up.
⑤ 先行项本身为不定代词
eg: All that glitters is not gold.
There is nothing that can prevent him form doing it.
This reference book contains much/ little that is useful.
⑥ 先行项为既指人又指物的并列名词短语
eg: The boy and the book that the police are looking for disappeared.
He talked of the man and the book that interested him.
Look at the girl and the dog that are crossing the street.
注：先行项指人时，只用that的情况
① 先行项有形容词最高级修饰
eg: Newton was one of the greatest men that ever lived.
He was the cleverest man that ever taught in our school.
② 先行项有序数词修饰
eg: He was the first Japanese that won the Nobel Prize.
③ 先行项有the only, the very, the same修饰
eg: He is the only one among us that knows Spanish.
④ 先行项有all, any等限定词修饰
eg: Any students that want to get the ticket may come in.
5)当先行项为整个上文时，用which不用that
eg: I have known men far more able than Bowles, but not half so interesting
whichis quite a different thing.
6)介词前置只用which 不用that
eg: This is the hotel at which I stayed during my holiday.
7)关系代词whose作定语，表示定语从句的主语与先行词之间的所属关系，可用of which 替
换，词序一般是“名词 + of which”，也可以是“of which + 名词”。
eg: He’s written a book the name of which (= whose name) I’ve completely
forgotten.
This is the scientist whose name is known all over the world.
2. 关系副词(在定语从句中作状语)：when, where, why…
1)when: 时间状语
eg: He came last night when I was out.
2)where: 地点状语
eg: That is the place where he once lived.
3)why: 原因状语(why只有限定用法，而非限定用法则用for which reason)
eg: He refused to disclose the reason why he did it.
The reason why I was late is that there was a traffic jam on my way he
初中英语定语从句的一些相关知识和句型已经很好的为大家总结好了，我相信只有我们大家掌握了这些之后，学习起来就简单了。
