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1、概念概念:1.在句子中修饰名词或代词在句子中修饰名词或代词, 定语从句在句中充定语从句在句中充当定语当定语. 2.定语从句必须有先行词定语从句必须有先行词, 并尽量靠近先行词并尽量靠近先行词. 3.在定语从句中在定语从句中, 关系词在从句中充当成分关系词在从句中充当成分.关系代词与关系副词关系代词与关系副词关系代词关系代词: 指人指人: 指物指物:指人或物指人或物:关系副词关系副词:who(主格主格), whom(宾格宾格), whose(所有格所有格)which(主格主格,宾格宾格), whose(所有格所有格) thatwhen, where, why注意注意:先行词有下列情况或附有下列修
2、饰语时先行词有下列情况或附有下列修饰语时,通通常用关系代词常用关系代词 that。1)先行词是先行词是all, no, none, everyone, something, much, little 等；等；2)先行词前有序数词先行词前有序数词(the first), 形容词最高级形容词最高级(the best), the last, the same, the only 等；等；3)如果先行词中既含有表示如果先行词中既含有表示人人的名词又有表示的名词又有表示物物的名词时；的名词时；4)若主句中有疑问代词若主句中有疑问代词 who 或者或者 which，为了避，为了避免重复免重复, 关系代词不
3、要再用关系代词不要再用 who, which，而，而用用 that。1. This is all _ I know about the matter. A. that B. what C. who D. whether2. Is there anything else _ you require? A. which B. that C. who D. what3. The last place _ we visited was the Great Wall. A. which B. that C. where D. it4. He talked happily about the men an
4、d books_ interested him greatly in the school. A. which B. that C. it D. whom5. There is no dictionary _ you can find everything. A. that B. which C. where D. in that6. This is one of the best books _. A. that have ever been written B. that has ever been written C. that has written D. that have writ
5、ten7. Is oxygen the only gas _ helps fire burn? A. that B. / C. which D. it提醒提醒: 介词关系代词引导的定语从句介词关系代词引导的定语从句, 关键是判断介关键是判断介词的选择词的选择, 方法一是看从句谓语部分缺少什么介词方法一是看从句谓语部分缺少什么介词(习习惯搭配惯搭配), 再则可以通过整个句子整体含义来判断再则可以通过整个句子整体含义来判断, 结合结合生活实际来判断生活实际来判断.例：例：The Second World War _ millions of people were killed in 1945.A.
6、 during which B. in that C. where D. on which1. Do you know who lives in the building _ there is a well? A. in front of it B. in front of whoseC. in front of which D. in front which2. Ill never forget the day _ I joined the League.A. on which B. in which C. which D. at which3. Jean was her old frien
7、d, _ she borrowed a necklace. A. from who B. from whomC. to that D. to whom5. His glasses, _ he was like a blind man, fell to the ground and broke its leg.A. which B. with which C. without which D. that6. Do you know the reason _ he was late?A. that B. which C. for what D. for which7. I have bought
8、two ballpens, _ writes well. A. none of which B. neither of which C. none of them D. neither of them提示提示: as ,which 均可以引出非限制性定语从句均可以引出非限制性定语从句,如都如都 指前一句话指前一句话, 二者可以互换。二者可以互换。as 引导的从句可以放引导的从句可以放在句首在句首, as 本身有本身有“正如正如.正象正象”之意，与之连之意，与之连用的词有用的词有 know, see, expect, announce, point out 等。等。此外此外, 在在the sam
9、eas；suchas.中中 as 引导的是引导的是限制性定语从句限制性定语从句.例：例：The earth is round, _we all know. A. that B. which C. who D. as He went abroad, as / which was expected.He went abroad, which was unexpected.1. _ was natural, he married Jenny. A. Which B. That C. This D. As2. Such signs _ we use in the experiment _ Greek
10、letters. A. as, are B. as, is C. that, are D. that, is3. I passed him a large glass of whisky, _ he drank immediately. A. that B. as C. which D. who4. She is very good at dance, _ everybody knows. A. that B. which C. who D. as5. It was raining, _ was a pity. A. what B. that C. the which D. which6. _ has been said above, grammar is a set of dead rules. A. Which B. What C. That D. As7. We do the same work _ they do. A. which B. as C. than D. likeTHANK YOU! Jennifer