6.由when, where, why引导的定语从句，如:

　　I don't know the reason why he was late.

　　This is the place where we have lived for 5 years.

　　I'll never forget the day when I met Mr Li for the first time.

　　注意：先行词是表示地点时，如果从句的谓语动词是及物的，就用 that(which)，如果从句的谓语动词是不及物的，就用where引导。This is the house Which /that he has lived in for 15 years.(Where he has lived for 15 year.)

　　7. 限制性定语从句和非限制性定语从句

　　(1)限制性定语从句是句中不可缺少的组成部分，主句和从句之间不用逗号分开。引导非限制性定语从句的关系代词有who, whom, whose, which, of which等，这些关系代词都不能省略。

　　(2)非限制性定语从句是对主句先行词的补充说明 ， 没有这种从句 ， 不影响主句意思的完整 ， 一般用逗号把主句和从句分开 ， 关系代词用 which,不用that;指人时可用who,如 ： I have two brothers, who are both students.

　　8.如何简化定语从句

　　(1).定语从句简化为形容词或形容词短语作后置定语。如:

　　My grandfather lives in a village that is far away from here.

　　→My grandfather lives in a village far away from here.我祖父住在离这儿很远的一个村子。

　　This is a book that is worth reading.

　　→This is a book worth reading. 这是一本值得看的书。

　　(2) 定语从句简化为现在分词或现在分词短语作前置或后置定语。

　　The man who is standing under the tree is our English teacher.

　　→The man standing under the tree is our English teacher.

　　站在树下面的那个人是我们的英语老师。

　　I saw the house that was burning at that time.→I saw the burning house at that time.

　　当时我看到那房子在燃烧。

　　(3)定语从句简化为过去分词短语作后置定语。

　　I like to see the films which are directed by Zhang Yimou.→I like to see the films directed by Zhang Yimou. 我喜欢看张艺谋导演的电影。

　　She is the girl who was praised at the school meeting.→She is the girl praised at the school meeting. 她就是在校会上受表彰的那个女孩。

　　(4)定语从句简化为不定式作后置定语。

　　He is always the first person that comes to school.→He is always the first person to come to school.他总是第一个到校。

　　The report which will be given tomorrow is important to us.→The report to be given tomorrow is important to us. 明天要作的报告对我们很重要。

　　(5)定语从句简化为what 从句。

　　I couldn't remember the words that he said.→I couldn't remember what he said.

　　我记不得他说的话。

　　【典型例题解析】

　　例 1 The second book ______I want to read is Business @ the Speed of Thought.

　　A. which B. what C. that D. as

　　解析 先行词 book被序数词修饰时要用that引导定语从句，故选C。

　　例 2 I'll never forget the days _____I stayed with you.

　　A. when B. in which C. that D. for which

　　解析 本题指时间，故选 A。

　　例 3 The book______ is sold out at the moment.

　　A. you need B. what you need

　　C. which you need it D. that you need it

　　解析 B、C、D中的what和it与先行The book相抵触 ， 故选 A。

　　例 4 Is this the place ______Lincoln once lived.

　　A. that B. which C. where D. when

　　解析 本题指地点，故选 C。

　　例 5 I'm one of the boys _________ never late for school.

　　A. that is B. who are C. who am D. who is

　　解析 本题中 who用作主语，谓语动词与先行词the boys保持一致，故选B。

　　【选讲例题】

　　例 6 Her sister,______ you met at my home, was a teacher of English.

　　A. whom B. that C. which D. who is

　　解析 非限制性定语从句中 ， 关系代词用 which,不用that,但指人时用who或whom.故选A。

　　例 7 These book are for students _____ mother language is not English.

　　A. of whom B. that C. which D. whose

　　解析 whose引导的定语从句中,whose用作定语，故选D。

---------------------------------说事儿分割线----------------------------

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