导入定语从句专项讲解提问：定语是什么？ 修饰限定名词或代词的成分被称为定语。举例: This is a beautiful flower. （形容词作定语，置前） This is a flower in the garden. （介词短语作定语，置后） This is the flower which you gave to me.（定语从句作定语，置后） 先行词 关系词 定语从句知识点梳理 定义：在复合句中,修饰某一名词或代词的从句叫做定语从句。 结构： 先行词+ 关系词+ 其他 关系词的用法: 1. 关系词的分类：1）关系代词： who, whom, which, that, whose 2）关系副词： when, where, why (作状语) 2. 关系代词在句中充当成分关系代词whowhomthatwhichwhose充当成分主、宾（可省）、表宾语主、宾（可省）、表主、宾(可省)、表定语先行词人人人或物物人或物3. 关系代词的详细用法l who, whom的用法1) who在定语从句中作主语、宾语或表语，作宾语可省。 The girl who is in red is Lily. (作_,不可省） I like the person who you are talking to. (作_,可用whom/that替换或者省略) You are who you are. (作_, 不可省) 2) whom在句中作宾语， 限制性从句可省，非限制性从句中不能省略 I happened to meet the professor whom I got to know at a party yesterday.(作_,可省)I have many friends to whom I am going to send postcards. （_后面不可省）温馨提示：关系代词whom在定语从句中作介词的宾语时， 常由“介词 + whom 引出，此时whom不能省略。 l whose的用法 whose的先行词既可指人，也可指物。在定语从句中作定语，whose = the n. +of which/whom e.g. This is the scientist whose achievements are well known. (whose指人) = This is the scientist, _ the achievements are well known. e.g. Id like a room whose window faces the sea. （whose指物） = Id like a room _ the window faces the sea.l that和which的用法 1) 限制性定语从句中，通常情况下可以互换。 that指人或物，which指物不指人，作主语或宾语，作宾语可省，主语不能。 His father works in a factory that/which makes TV sets. (作_, 不可省) The coat _ I put on the desk is black. （作_, _）注意：(先行词为物，在介词后面用which） The room in _ I live is very big. = The room _ I live in is very big.2） 只用that“人物最不避人物” “人物”that既可指人，也可指物 Is this the museum that you visited the other day? (指_,可用_) Jack is no longer the person that I met five years ago. （指_, 可用_、_） “最”极端修饰：最高级、序数词、the only, the same, the same等 This is the best film that has been shown so far in the city. (先行词被_修饰) The first thing that we should do now is to find a local guide. （先行词被_修饰） “不”不定代词 (all, much, little, few, something, anything, everything, nothing, none, 等) All the apples _that_ fell down from the tree were eaten up by the pigs. There is not much _ ought to be done right now. (先行词为_) He did everything could help us. (先行词为_) (10 全国2) I refuse to accept the blame for something _ was someone elses fault. A. which B. whose C. who D. that “避”避免重复 Who is the person that is standing at the school gate? （前有_） 哪辆自行车是你弄丢的那辆？ _ is the bike _ you lost? “人物”先行词有人也有物 Tell us about the people and the places _that are different from ours. Im going to talk about the countries and people that I have visited.（先行词是_）3) 只用which 在非限制性定语从句中 She lost the game, which depressed her greatly. Tokyo, _ is the capital of Japan, sees great changes every day. 在定语从句中作介词的宾语，且介词位于关系代词前。 The house in which I used to live has become a shoe shop. The pen with _ you are writing is Jeffs.如果有两个定语从句，其中前一个关系代词用that，后一个宜用which Let me show you the novel that I borrowed from the library which was newly open to us. Step 1: 找出先行词，判断指人指物 Step 2: 判断定语从句中缺什么成分（主语、宾语、表语、定语） Step 3: 选择合适的关系代词。 1. This is the bag _ my mother bought yesterday.A. thatB. who C. whom D. This2. The man _ lives next to us is my English teacher. A. whom B. whichC. who D. /3. The girl _ you saw in the street is Mary. A. thatB. whoseC. which D. as4. Is this the factory _ a lot of students visited yesterday? A. the oneB. that C. whereD. this5. The only language _ is easy to learn is the mother tongue. A. which B. that C. /D. it6. The girl handed everything _ she had picked up in the street to the police. A. which B. in which C. thatD. all7. Please show me the book _ you bought yesterday. A. which B. whom C. whoseD. this8. This is the best book _ I have been looking for all this year. A. whoB. whom C. whichD. /9. The man _ was here just now is a doctor.A. whomB. who C. /D. He10. The boy _ has two lovely dogs. A. who live next doorB. which lives next doorC. whom lives next door D. that lives next door1