摘要：“介词 + 关系代词 引导的定语从句修饰物时用which,不用that,修饰人时用whom不用who. The school in which he once worked is a key school. (=The school he once worked in is a key school.) 他曾经工作过的学校是一所重点学校 [拓展延伸]“介词 + 关系代词 的常见结构: 1) 介词 + which/whom This is the famous singer about whom we have often talked. 这就是那位我们经常谈论的著名歌唱家 2)名词 + of + which/whom Please pass me the book the cover of which is blue. 请把那本蓝封面的书递给我. 3)数词 + of + which/whom In our school there are about 200 teachers, thirty percent of whom are women. 我校大约有200位教师.其中百分之三十是女教师 4) 代词 + of + which/whom In the basket I find many apples, some of which=of which some have gone bad. 我发现篮子里有好些苹果.有些已经坏了. There are fifty students in our class, most of whom are from big cities. 我们班有50个学生.其中大多数来自大城市 5)最高级 + of + which/whom China has thousands of islands, the largest of which is Taiwan. 中国有数千个岛屿.其中最大的是台湾岛 6) 介词 + which + 名词 He usually returns home at 10:00, at which hour his father locks all the doors and windows. 他通常十点钟回家.这时候他爸爸锁好所有的门窗 This is the very book I am looking for. (√) 这正是我在找的书. [点拨]短语为固定搭配时 (如:look for, look after, take care of)介词不能提前. [点拨] 1)关系代词前介词的选择 ① 根据动词和介词的搭配关系选择. ② 根据与前面名词的搭配关系选择. ③ 有时需同时考虑动词和介词的搭配关系及介词和名词的搭配关系. ④ 根据所要表达的意思来确定. 2)关系副词和关系代词的选择 当先行词是表示时间.地点或原因的名词时.定语从句用关系副词还是关系代词来引导.要根据关系词在定语从句中所担当的句子成分来决定 [典型例题]1. –What do you think of teaching, Bob? –I find it fun and challenging. It is a job you are doing something serious but interesting. A. where B. Which C. When D. that [解析]选A.考查定语从句的用法.定语从句主谓宾完整.说明应该填关系副词.先行词为a job.定语从句的意思是在这个工作中--.所以答案用where引导的定语从句.

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