概念概念:用来修饰名词或代词的句子叫用来修饰名词或代词的句子叫定语从句定语从句. 位置位置: 放在所修饰名词或代词的后放在所修饰名词或代词的后面面(Attributive clause)Mary is a girl who has long hair.(整一个句子作定语修饰前面的名词整一个句子作定语修饰前面的名词girl, 所以这个句子是所以这个句子是定语从句定语从句)1. Mary is a girl.2. May has long hair.分解句子分解句子: :Mary is a girl who has long hair.先行词先行词关系词关系词定语从句定语从句Mary is a girl who has long hair.关系关系代词代词关系关系副词副词which, who, whom, whose, thatwhere, when, why关系代词的用法关系代词的用法: :当先行词是当先行词是物物时时, , 用用which 或或that引导引导. .The book which/ that I bought yesterday is funny.当先行词是当先行词是人人时时, , 用用who / whom或或that引导引导.注注: that既可引导既可引导物物,也可以引导也可以引导人人 that和和which在指物的情况下一在指物的情况下一般都可以互换般都可以互换, 但在下列情况下但在下列情况下, 一般用一般用that而不用而不用which。 I am sure she has something (that) you can borrow.(1) 先行词为先行词为all, everything, nothing, something, anything, little, much 等不定等不定代词时。代词时。NoteThis is the first book (that) he has read.This is the very book that belongs to him.(3) 先行词被序数词或最高级修饰时。先行词被序数词或最高级修饰时。(4) 先行词被先行词被the only, the very, the same, the last修饰时。修饰时。Ive read all the books that are not mine. (2) 先行词被先行词被all, every, no, some, any, little, much等修饰时。等修饰时。This is the cleanest park that you can imagine.e.g. He talked about the things and persons he had visited in the city. * 在在who或或which引导的特殊疑问句中，引导的特殊疑问句中，限制性定语从句必须用限制性定语从句必须用that引导。引导。that e.g. Who is the man is standing over there.that5. 先行词既有人又有物时，只能用先行词既有人又有物时，只能用that。who, whom, that用法区别用法区别.当先行词是人，而且指代它的那个关系词当先行词是人，而且指代它的那个关系词在从句中作主语时，用在从句中作主语时，用who或或that作关系词。作关系词。（多用（多用who） The man who（that） is speaking at the meeting is a worker.The man is a worker.The man is speaking at the meeting.分解分解作主语作主语当先行词时人，而且指代它的关系词当先行词时人，而且指代它的关系词在从句中充当在从句中充当宾语宾语，那么关系词用，那么关系词用whom或或that作关系词。（多用作关系词。（多用whom） The woman whom（that) they wanted to visit is a teacher.The woman is a teacher.They wanted to visit the woman.分解分解作宾语作宾语做宾语时做宾语时,在口语中也可用在口语中也可用who做关系词做关系词.that 可以作定语从句的可以作定语从句的主语和宾语主语和宾语.注意注意: : 关系代词在从句中作宾语关系代词在从句中作宾语时可省略时可省略. . The woman (whom/ that) they wanted to visit is a teacher.whose意为意为“的的”，如果在定语从句中，如果在定语从句中关系词后面紧跟着一个名词关系词后面紧跟着一个名词,而且先行词跟这个而且先行词跟这个名词构成所属关系时，就用关系代词名词构成所属关系时，就用关系代词whose。其先行词可以是人，也可以是物。其先行词可以是人，也可以是物。 I know the girl _mother is a teacher.分解分解I know the girl.The girls mother is a teacher.作定语作定语解题技巧解题技巧: 当看到关系词后面紧跟着一个名词时当看到关系词后面紧跟着一个名词时,那么所缺的关系词多数情况是那么所缺的关系词多数情况是whose.whose4. Please take the second chair_ is over there. A. where B. which C. who D. that 5. Is oxygen the only gas _ helps fire burn? A. that B./ C.which D.it 6. Finally, the thief handed everything _ he had stolen to the police. (NMET98) A. which B. what C. whatever D. that 7. All of the flowers now raised here have developed from those _ in the forest. A. once the grew B. they grew once C. that once grew D. once grew.8. I dont like _ you speak to her. A. the way B. the way in that C. the way which D. the way of which9. The weather turned out to be very good, _ was more than we expected. A. what B. which C. that D. it10. He paid the boy $10 for washing ten windows; most of _ hadnt been cleaned for ten years. A. these B. those C. that D. which 1. I have a friend _ likes listening to classical music.who/thatwhich/thatwhose3. The man _ leg broke in a match used to be a football player.2. Yesterday Emily was wearing the new dress _ I gave her.先行词是先行词是one（指人）指人）, anyone, those （指人）指人）, he时宜用时宜用who.Anyone who breaks the law shall be punished.Those who are against the plan put up your hands please.在非限制性定语从句中在非限制性定语从句中His mother, who loves him very much, is strict with him.（一）只用（一）只用whowho的情况的情况当先行词与定语从句被其他词所分隔时当先行词与定语从句被其他词所分隔时I met a foreigner in the street yesterday who could ask me questions in Chinese.在在there be开头的句子中开头的句子中There is an old man who wants to see you.一句中有两个定语从句，并且两个先行词都一句中有两个定语从句，并且两个先行词都是人时，前一个定语从句的关系词是是人时，前一个定语从句的关系词是that，另另一个只用一个只用whoThe boy that you met last night is the group leader who studies very hard.（四）只用（四）只用whichwhich的情况的情况非限制性定语从句中只用非限制性定语从句中只用which，不用不用thatBeijing, which is the capital of China, is a very beautiful city.关系代词紧跟在介词或介词短语之后，只关系代词紧跟在介词或介词短语之后，只能用能用which或或 whom，不能用不能用thatThis is the hotel in which you will stay.This is the hotel which/ that you will stay in.Tips1. 关系代词在从句中作宾语时关系代词在从句中作宾语时,关系代词可省略关系代词可省略.eg. This is the house _ I visited.2. what不能引导定语从句不能引导定语从句;且且what = all thatI will do all that I can to help you.= I will do what I can to help you.which/that/不用不用3. one of + pl.n. +关系代词关系代词 +动词复数动词复数 the (only) one of +pl.n. +关系代词关系代词 +单数动词单数动词The Great Wall is one of the world-famous buildings _ _ (draw) lots of visitors. Titanic is the only one of the most wonderful movies _ _ (have be) produced in Hollywood.thatdrawthat has beenExerciseExercise 1 11. I can still remember the sitting room in _ my mother and I used to sit in the evening.2. A child _ parents are dead is called an orphan.3. Finally the thief handed everything _ he had stolen to the police.4. We visited a factory _ makes toys for children.5. The man _ you just talked to was a friend of mine. whichwhosethatthat/whichwho(m)/that作作的宾语的宾语6. Please pass me the dictionary _ cover is black.7. Mr. White is one of the foreign experts _ are working in China.8. Is this the museum _ you visited the other day?9. This is the worker with _ my father worked.10. To get the job started, all _ I need is your permission.whosewhosewho/thatwho/thatthat/ whichthat/ whichwhomwhomthatthatExercise11. Is this the factory _ you have been to last year?A. which B. in which C. where D. the one 2. Is this factory _ you have been to last year?A. which B. in which C. where D. the one3. Is Mr. Smith the person _ you know this?A. that B. whom C. from whom D. by whom4. I attended the meeting the importance _ I did not realize at that time.A. who B. of which C. which D. its ADCB5. Whats that _ flashed in the sky just now?A. which B. that C. who D. as7. This is the most interesting one _ I have ever read.A. which B. that C. of which D. in thatAB4. My parents live in a house_ is more than 100 years old.5. The boy with _ John spoke is my brother.which/thatwhom6. Kevin is reading a book _ is too difficult for him.which/that7. Is there anything _ you want to buy in the town.8.All _ we can do is to study hard.9. The first one _ stands up is a little boy.thatthatthat1.这就是救了那个孩子命的医生这就是救了那个孩子命的医生.This is the doctor who saved the boys life.2.正在跑步的那个人是我的叔叔正在跑步的那个人是我的叔叔.The man who is running is my uncle.3. 我喜欢可以随之而唱的音乐我喜欢可以随之而唱的音乐. I like the music that I can sing along with.4. 住在隔壁的那个女的是一名教师住在隔壁的那个女的是一名教师. The woman who lives next door is a teacher.