高一英语知识点：定语从句全掌握

　　(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. 如：

　　1. There is still a seat in the corner that is still free.

　　(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 . 如：

　　1. That's a good book that will help you a lot.

　　2. My home village is no longer the place ( that ) it used to be .

　　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. 如：

　　1.A zoo is a park in which many kinds of animals are kept for exhibition.

　　2.Is this the room in which Mr. White lives?

　　(2) 在非限制性定语从句中. 如：

　　1.Crusoe's dog, which was are now very old, became ill and died .

　　2.More and more people are beginning to learn English, which is becoming very popular in our country. (which指代主句)

　　(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 . 如：

　　1. Let me show you the novel，that I borrowed from the library which was newly open to us.

　　2. At the station I bought some magazines that might help me to pass the time on the train and which I could pass on to others when I finished them.

　　(4) 当关系代词后面带有插入语时. 如：

　　1. Here's the English grammar which, as I have told you, will help improve your English.

　　(5) 先行词本身是that, 宜用which . 如：

　　What's that which she is looking at?

　　(6) 先行词是those+复数名词. 如：

　　A shop should keep a stock of those goods which sell best.

　　(B) who & that:

　　who 和 that 指代人时，有些情况宜用who, 而不宜用that

　　(1) 先行词为anyone, anybody, those, all, one, ones, they, he, people时. 如：

　　1.The person I want to learn from is the one who studies hard and works well.

　　2.Anyone who (=Whoever) failed to come to the meeting yesterday must give his reason .

　　3.Those who are not fit for their work should leave office at once

　　4.I don't like the ones (= those ) who talk big.

　　5.Persons who are quarrelsome are despised.

　　(2) 在There be 结构中，修饰主语的定语从句宜用关系代词who 指代人. 如：

　　1.There is a gentleman who wants to see you .

　　2.There are several students in our class who are still not sure about the use of attributive clauses.

　　(3) 当先行词有较长的后置定语时. 如：

　　1. I met a foreigner in the park yesterday afternoon who could speak Chinese very well.

　　(4) 一个句子中带有两个定语从句，其中一个定语从句的关系代词是that ,另一个则宜用who, 以免重复. 如：

　　1. The student that was praised at yesterday's meeting is the monitor who is very modest and works very hard .

　　(C) as & which:

　　as & which 引导非限制性定语从句的区别：

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