下载文档原格式
Unit 6 定语从句专项训练定语可以由形容词，代词，数词，名词，分词，副词，不定式，介词短语等来担当。
如果是由一个句子担任定语，那么这个句子就叫做定语从句。
因为主要由形容词担任定语，所以也可以称它为形容词性从句。
定语从句可以修饰名词或代词，还能修饰整个句子或主句的一部分。
一）定语从句的构成A young man + He liked adventure.先行词关系词=连词+代词A young man who liked adventure. 爱冒险的青年人修饰先行词定语从句There was a young man who liked adventure. 有个爱冒险的青年人被定语从句修饰的词叫先行词，引导定语从句的词叫关系词。
关系词一般紧跟在先行词之后，引导定语从句。
定语从句都在它所修饰的先行词的后面（位置）。
这一点和汉语不同，汉语中的定语都放在被修饰的名词或代词的前面。
二）关系词的作用两个简单句Thank you for the record.+ You gave me the record.先行词关系代词=连词+代词主从复合句Thank you for the record that/ which you gave me.谢谢你给我的录音机。
定语从句(x) Thank you for the record that/ which you gave me the record.(x) Thank you for the record that/ which you gave it to me.关系代词起着代词和连词的作用。
在从句中关系词既代替前面的先行词在句子里担任一定的成分，又把两个句子连接起来构成一个带有定语从句的主从复合句。
（说明）复合句。
看上面例句。
关系代词that / which 紧跟在先行词record 的后面引导定语从句。
关系代词that / which 在从句中既代替先行词record在句子里担任宾语（该定语从句原应为You gave me the record），又起着连词的作用，把两个简单句连接起来构成一个带有定语从句的主从复合句。
初三英语定语从句练习题30题(答案解析)1.The man ____ is standing there is my teacher.A.whoB.whomC.thatD.which答案解析：A。
“The man”是人，在定语从句中作主语，所以用who。
whom 只能在从句中作宾语；that 既可以指人也可以指物，但在此处不如who 更强调人的身份；which 只能指物。
2.The book ____ I bought yesterday is very interesting.A.thatB.whichC.whoD.whom答案解析：A 或B。
“The book”是物，在定语从句中作宾语，that 和which 都可以指物引导定语从句；who 和whom 只能指人，不适用。
3.The girl ____ he loves is very beautiful.A.whoB.whomC.thatD.which答案解析：A 或B 或C。
“The girl”是人，在定语从句中作宾语，who、whom 和that 都可以指人引导定语从句；which 只能指物。
4.The woman ____ I met at the party is a famous singer.A.whoB.whomC.thatD.which答案解析：A 或B 或C。
“The woman”是人，在定语从句中作宾语，who、whom 和that 都可以指人引导定语从句；which 只能指物。
5.The dog ____ barked loudly is mine.A.thatB.whichC.whoD.whom答案解析：A 或B。
“The dog”是物，在定语从句中作主语，that 和which 都可以指物引导定语从句；who 和whom 只能指人，不适用。
6.The house ____ we live in is very old.A.thatB.whichC.who答案解析：A 或B。
初三英语定语从句练习题20题1.This is the book which/that I bought yesterday.whichthatwhowhom答案：which/that。
本题考查关系代词的用法。
先行词是book，是物，所以关系代词用which 或that。
who 和whom 只能指人，不能用于指物。
2.The man who/that is standing there is my teacher.whothatwhichwhom答案：who/that。
先行词是man，是人，且在从句中作主语，所以关系代词用who 或that。
which 只能指物，whom 只能在从句中作宾语。
3.The girl whom/who/that I met yesterday is very kind.whomwhothatwhich答案：whom/who/that。
先行词是girl，是人，且在从句中作宾语，所以关系代词用whom、who 或that。
which 只能指物。
4.This is the house which/that was built last year.whichthatwhowhom答案：which/that。
先行词是house，是物，所以关系代词用which 或that。
who 和whom 只能指人，不能用于指物。
5.The woman who/that teaches us English is very patient.whothatwhichwhom答案：who/that。
先行词是woman，是人，且在从句中作主语，所以关系代词用who 或that。
which 只能指物，whom 只能在从句中作宾语。
6.The pen which/that I am using is very expensive.whichthatwhowhom答案：which/that。
先行词是pen，是物，所以关系代词用which 或that。
九年级英语定语从句练习题30题(答案解析)1.This is the man ____ helped me yesterday.A.whoB.whomC.that答案解析：A 和C 都可以。
先行词man 在定语从句中作主语，关系代词who 和that 都可以在定语从句中作主语。
whom 只能在定语从句中作宾语。
2.The woman ____ I met at the store is very friendly.A.whoB.whomC.that答案解析：A 和C 都可以。
先行词woman 在定语从句中作宾语，关系代词who 和that 都可以在定语从句中作宾语，whom 也可以在定语从句中作宾语，但whom 在正式文体中使用较多。
3.The teacher ____ we all respect is very kind.A.whoB.whomC.that答案解析：A 和C 都可以。
先行词teacher 在定语从句中作宾语，关系代词who 和that 都可以在定语从句中作宾语，whom 也可以在定语从句中作宾语，但whom 在正式文体中使用较多。
4.The boy ____ is standing over there is my brother.A.whoB.whomC.that答案解析：A 和C 都可以。
先行词boy 在定语从句中作主语，关系代词who 和that 都可以在定语从句中作主语。
whom 只能在定语从句中作宾语。
5.The girl ____ I talked to is very smart.A.whoB.whomC.that答案解析：A 和C 都可以。
先行词girl 在定语从句中作宾语，关系代词who 和that 都可以在定语从句中作宾语，whom 也可以在定语从句中作宾语，但whom 在正式文体中使用较多。
6.The man ____ I saw at the park is my neighbor.A.whoB.whomC.that答案解析：A 和C 都可以。
九年级英语定语从句分析练习题30题含答案解析1.This is the book which/that I bought yesterday.A.whoB.whichC.thatD.whose答案解析：B、C。
本题先行词是book，是物，在定语从句中作宾语，关系代词可用which 或that。
A 选项who 用于指人；D 选项whose 表示所属关系。
2.The man who/that is talking to my teacher is my father.A.whoB.whichC.thatD.whose答案解析：A、C。
本题先行词是man，是人，在定语从句中作主语，关系代词可用who 或that。
B 选项which 用于指物；D 选项whose 表示所属关系。
3.The house which/that is big and beautiful belongs to my uncle.A.whoB.whichC.thatD.whose答案解析：B、C。
本题先行词是house，是物，在定语从句中作主语，关系代词可用which 或that。
A 选项who 用于指人；D 选项whose 表示所属关系。
4.The girl who/that is singing a song is my classmate.A.whoB.whichC.thatD.whose答案解析：A、C。
本题先行词是girl，是人，在定语从句中作主语，关系代词可用who 或that。
B 选项which 用于指物；D 选项whose 表示所属关系。
5.The pen which/that I lost yesterday was red.A.whoB.whichC.thatD.whose答案解析：B、C。
本题先行词是pen，是物，在定语从句中作宾语，关系代词可用which 或that。
A 选项who 用于指人；D 选项whose 表示所属关系。
九年级英语定语从句练习题50题含答案解析1.This is the book which/that I bought yesterday.A.whoB.thatC.whichD.whose答案解析：C。
先行词是book，是物，在定语从句中作宾语，所以用which 或that。
A 选项who 用于先行词是人时；D 选项whose 表示所属关系。
2.The man who/that is standing there is my teacher.A.whoB.whichC.thatD.whose答案解析：A。
先行词是man，是人，在定语从句中作主语，所以用who 或that。
B 选项which 用于先行词是物时；D 选项whose 表示所属关系。
3.The house which/that we live in is very old.A.whoB.thatC.whichD.whose答案解析：C。
先行词是house，是物，在定语从句中作宾语，所以用which 或that。
A 选项who 用于先行词是人时；D 选项whose 表示所属关系。
4.The girl who/that has long hair is my sister.A.whoB.whichC.thatD.whose答案解析：A。
先行词是girl，是人，在定语从句中作主语，所以用who 或that。
B 选项which 用于先行词是物时；D 选项whose 表示所属关系。
5.The pen which/that I lost yesterday was red.A.whoB.thatC.whichD.whose答案解析：C。
先行词是pen，是物，在定语从句中作宾语，所以用which 或that。
A 选项who 用于先行词是人时；D 选项whose 表示所属关系。
6.The boy who/that is playing basketball is very tall.A.whoB.whichD.whose答案解析：A。
中考英语定语从句题20套(带答案)一、定语从句1．When Robinson got to the island，the first thing _________he did was to look for some food．A．who B．which C．that D．What【答案】C【解析】试题分析：句意：当鲁滨逊•克鲁索到达岛上时，他做的第一件事就是寻找一些食物。
本题考查定语从句。
先行词指物且被序数词first修饰，故只能选用关系词that。
因此C项正确。
考点：考查定语从句。
2．I like listening to music______ can touch the heart of people.A．that B．who C．where D．what【答案】A【解析】【详解】句意：我喜欢听能触动人心的音乐。
考查定语从句引导词。
what不引导定语从句，可排除。
that可指人指物；who指人；where指地点。
本句先行词music是物，引导词做从句的主语，需用that引导；根据句意语境，可知选A。
3．The girl handed everything _____ she had picked up in the street to the police.A．which B．in which C．that D．all【答案】C【解析】【详解】句意：女孩把她在街上捡到的所有东西都交给了警察。
考查定语从句。
本句先行词everything是不定代词，应该用关系代词that引导此定语从句。
故选C。
4．Shirley is the girl ______ taught me how to use Wechat（微信）.A．whom B．which C．who【答案】C【解析】句意：雪莉是教会我如何使用微信的一个女孩。
whom修饰人，在定语从句中作宾语或表语；which修饰事物，在定语从句中主语或宾语，或表语。
九年级英语定语从句练习题30题1.The writer __________ books are very popular is coming to our school.A.whoB.whomC.whoseD.that答案：C。
本题考查定语从句关系词的用法。
先行词是“writer”，后面的“books”与“writer”是所属关系，所以用“whose”表示“……的”。
A 选项“who”在定语从句中作主语或宾语，指人；B 选项“whom”在定语从句中作宾语，指人；D 选项“that”可指人也可指物。
2.The scientist __________ we met yesterday is very famous.A.whoB.whomC.whoseD.that答案：A（或B、D 也可以）。
先行词是“scientist”，在定语从句中作“met”的宾语，所以“who”“whom”“that”都可以。
“who”在定语从句中作主语或宾语，指人；“whom”在定语从句中作宾语，指人；“that”可指人也可指物。
3.The book __________ cover is red is very interesting.A.whoB.whomC.whoseD.that答案：C。
先行词是“book”，后面的“cover”与“book”是所属关系，所以用“whose”表示“……的”。
A 选项“who”在定语从句中作主语或宾语，指人；B 选项“whom”在定语从句中作宾语，指人；D 选项“that”可指人也可指物。
4.The singer __________ voice is beautiful is my idol.A.whoB.whomC.whoseD.that答案：C。
先行词是“singer”，后面的“voice”与“singer”是所属关系，所以用“whose”表示“……的”。
A 选项“who”在定语从句中作主语或宾语，指人；B 选项“whom”在定语从句中作宾语，指人；D 选项“that”可指人也可指物。
九年级英语定语从句练习题30题含答案解析1.This is the man ______ helped me yesterday.A.whoB.whomC.whose答案解析：A。
“who”在定语从句中作主语，指人。
本句中“who helped me yesterday”修饰“the man”，且在从句中作主语，所以选A。
“whom”在定语从句中作宾语；“whose”表示所属关系。
2.The girl ______ I met at the party is very friendly.A.whoB.whomC.whose答案解析：A。
“who”在定语从句中作主语，指人。
本句中“who I met at the party”修饰“the girl”，且在从句中作主语，所以选A。
“whom”在定语从句中作宾语；“whose”表示所属关系。
3.The teacher ______ class is very interesting is Mr. Wang.A.whoB.whomC.whose答案解析：C。
“whose”在定语从句中表示所属关系。
本句中“whose class is very interesting”修饰“the teacher”，表示“老师的课很有趣”，所以选C。
“who”在定语从句中作主语，指人；“whom”在定语从句中作宾语。
4.The boy ______ mother is a doctor is my classmate.A.whoB.whomC.whose答案解析：C。
“whose”在定语从句中表示所属关系。
本句中“whose mother is a doctor”修饰“the boy”，表示“男孩的妈妈是医生”，所以选C。
“who”在定语从句中作主语，指人；“whom”在定语从句中作宾语。
5.The woman ______ we saw in the park is a famous singer.A.whoB.whomC.whose答案解析：A。
一、选择题1．The place ________ interested me most was the Children’s Palace.A．what B．whereC．which D．in which2．—Are you interested in the talk show The Reader on CCTV?—Sure. It's a great TV program ________ brings the habit of reading back into the public. A．that B．what C．who D．whom3．---How much do you know about John Nash?----Just a little. He is a Nobel Prize –winning scientist ____ was killed in a car crash yesterday. A．which B．what C．who D．whom4．（题文）There will be a flower show in the park ________ we visited last week.A．who B．whenC．what D．which5．Nanjing Yangtse River Bridge was built in the 1960s is now under repair.A．who B．whose C．which D．what6．Have you found the information about famous scientists you can use for thereport?A．where B．which C．what D．who7．Some interesting TV shows lots of famous stars performed attracted lots of youngpeople.A．on which B．that C．which D．in which8．---Linda, can you tell me something about Agatha Christie?--Sure. Agatha Christie was a female writer ________ is considered as the queen of crime novels. A．which B．whose C．what D．who 9．Happiness and success often come to those are good at recognizing their own strengths. A．where B．who C．what D．which10．The Gree (格力) Company is developing a new kind of machine can cool down our rooms more quickly.A．who B．what C．whom D．which11．I’d like to tell you the table manners ________ you should know when you visit South Korea this summer holiday.A．what B．who C．which D．why12．I will never forget the people and the things_______ I saw on the Great Wall.A．who B．which C．whom D．that 13．—Have you seen my watch anywhere, Lucy?—Is it the one your uncle bought for you in Hong Kong?A．who B．what C．that D．when14．--- Have you ever seen the film The Shawshank Redemption?---Yes, and I think it is the best film teaches me a lot.A．that B．which C．what D．/15．--- Why do you admire Yuan Longping so much?--- Because he is the person helps solve the problem of hunger.A．which B．who C．what D．/16．— Why do so many people like Ann?— Because she is a girl ________ always thinks more of others.A．which B．who C．whose D．what 17．Success falls to those ________ hold their dreams and put their hearts into them. A．which B．whom C．what D．who18．The old collector always prefers art works ________ describe the everyday life of common people.A．who B．whose C．where D．which19．﹣﹣﹣Where would you like to visit the next winter holiday？﹣﹣﹣I want to visit a place ______ is famous for its views．A．which B．where C．when D．who20．---What kind of movies do you like?--I like movies_______ are about Chinese history.A．who B．whom C．whose D．that21．---The panda is a kind of animal _______ I like best.A．who B．which C．where D．what22．There are many works of art in the museum _______we will visit tomorrow.A．where B．who C．which D．what23．—It’s bad for health to hurry to move into a house ________ has a lot of new furniture in it.—Thank you. I’ll take your advice.A．that B．where C．in which D．who24．Great changes have taken place in our city in the past ten years. Everything ________ comes into sight is so new to me.A．that B．which C．who D．whom25．The old town has narrow streets and small houses _____are built close toeach other.A．who B．that C．what D．They26．—It’s the bes t time to visit Lianyungang now.—Yes, it is the beautiful city ________ I want to visit.A．where B．who C．which D．when 27．—What kind of music do you like?—I like music ________ I can sing along with.A．who B．where C．that D．when 28．—How was your trip to Yangzhou?—Wonderful. I think I have just visited the best place ________ can show us the beauty of Spring.A．what B．who C．that D．/29．The tree ________ is near Shita Temple is over 1000 years old.A．who B．which C．what D．whom30．I will never forget the important people in my life ________ helped and supported me. A．who B．which C．what D．whom31．— According to the survey, women ________ drink more than two cups of coffee a day have a great chance of having heart disease than ________ who don’t.— Oh, really? How great he is!A．who, that B．/, these C．who, those D．/, /32．I’ve got a bottle of beer, but I haven’t got anything ________ I could open it with.A．that B．what C．where D．which33．—Do you know the man ________is under the tree? —Oh, he is our new P.E. teacher. A．who B．whose C．whom D．which34．Ne Zha is a Chinese cartoon ________ has been popular in China and is much loved by little children and their parents.A．who B．what C．which D．it 35．Whenever he was late, he could find plenty of excuses ________ sounded reasonable. A．who B．what C．where D．that36．—What does "mother" mean to you, Sandy?—Everything. Mother is the person ________ is always standing in the wind waiting for me on cold winter days.A．which B．who C．whom D．what37．—Can I help you, sir?—I want a new book was written by Cao Wenxuan.A．what B．where C．which D．who38．—You have been to Yangzhou recently. What do you think of this city?— I like it very much, and I think it is the most beautiful place ____ I have ever been to. A．which B．that C．where D．who39．Home is a place ________ you grow up hoping to leave, and grow old hoping to return to. A．who B．what C．that D．how40．---At present young people prefer WeChat to keep in touch with their friends.--Yes. It seems to be the best way of communication people like.A．that B．how C．who D．what41．I will never forget the three years I spent with my classmates and teachers in the middle school.A．which B．when C．what D．where42．The happiest of people don’t necessarily have the best of ev erything; they just make the most of everything ________ comes along their way.A．which B．who C．when D．that 43．Women drink more than two cups of coffee a day have a greater chance of having heartdisease than those don't.A．who;不填B．不填;who C．who; who D．不填;不填44．The boys ____________ from America like ChinaA．who is B．are C．which is D．who are45．In 2019, the actor Guo Jingfei acted in a TV play All is Well _____ attracted thousands of his fans.A．whose B．what C．which D．/46．That was his first invention. It was a machine ________ clothes.A．that used to wash B．which was used to washingC．which got used to washing D．that was used to wash47．-Have you found the information about the famous people ______ you can use for the report?-Not yet. I’l l search some on the Internet.A．who B．what C．whom D．which48．- It’s the best time to visit Lianyungang now.- This is the best place _____ I have ever visited.A．where B．that C．which D．when49．Is this factory _______ you visited the other day?A．in which B．which C．where D．the one50．一What are you reading these days, Eric?一The Little Prince, the best read ________teaches me a lot.A．which B．what C．who D．／【参考答案】***试卷处理标记，请不要删除一、选择题1．C【解析】试题分析：句意：最让我感兴趣的地方是少年宫。
定语从句专项练习题与答案详解练习一：1. Nearly all the streets are in straight lines, from east to west. Those________ run from north to south are called avenues.A. running; thatB. run; whoC. running; whoD. run; that2. This is the case ___ h e' s had all his money stolen.A. whenB. whereC. thatD. on which3. Mr. Smith will pay a visit to Beijing this autumn, we will enjoy theOlympic Games in 2008.A. whereB. whenC. whichD. how4. The artist will not paint people or animals but he will paint anything .A. that the little girl asks himB. the little girl asks him toC. for the little girl to ask himD. what the little girl asks him5. —How did you get in touch with the travel agent, Robin?—Oh, that ' s easy. I surfed the Internet and then called one the telephonenumber is provided.A. whichB. in whichC. of whichD. whose6. October 15th is my birthday, ____ I will never forget.A. whenB. thatC. whatD. which7. The treatment will continue until the patient reaches the point he canwalk correctly and safely.A. whenB. whereC. whichD. whose8. There are several research centers in China __ a certain disease called BirdFlu is being studied.A. whichB. whereC. whenD. what9. I hope that the little __ I have been able to do does good to them all.A. whichB. whatC. thatD. when10. The time is not far away ____ modern communications will becomewidespread in China ' s vast countryside.A. asB. whenC. untilD. before11. _______ is known to everybody, Taiwan is a part of China. We must unify it.A. ItB. AsC. WhichD. What12. I shall never forget the day __ Shen Zhou V was launched, _______ has a great effect on my life.A. when, whichB. that, whichC. which, thatD. when, that13. The bread my wife makes is much better than ____ you can buy at a store.A. that whichB. one thatC. that of whichD. this of which14. There is no such place _____ you dream of in all this world.A. thatB. whatC. whichD. as15. The people, ______ had been damaged by the flood, were given help by the Red Cross.A. all whose homesB. all of whose homesC. all their homesD. all of their homes16. The humans are destroying nature day by day, ___ of course, will cause severe punishment from it sooner or later.A. whoB. whenC. on whichD. which17. Is this research center ____ you visited the modern equipment last year?A. whereB. thatC. the one thatD. the one where18. Some pictures of the river brought the days back to the old they swamin it.A. whenB. thatC. whoD. where19. The man showed us so heavy a stone ______ no man can lift.A. thatB. asC. whichD. and20. He stayed there for quite a long time, during _ time he learned much spoken English.A. thatB. thisC. whichD. same练习二：1. ____________ The bridge a big ship can go has been built.A. under whichB. under thatC. in whichD. on which第 2 页共 6 页2. ___________ The book is torn is mine.A. the cover of whichB. the cover of thatC. which the coverD. whose cover of3. He talked about the classmates and the school he had visited.A. whoB. thatC. whichD. about which4. _____________________ You have seen the girl sister is a Chinese teacher.A. whomB. of whomC. whoseD. of which5. We should do all _ is useful to people.A. /B. thatC. itD. which6. We came to a place __ they had never paid a visit before.A. whichB. in whichC. on whichD. to which7. Those ___ finished doing it put up your hands.A. who haveB. who hasC. which haveD. have8. The reason is ___________ he is unable to operate the machine.A. becauseB. whyC. thatD. whether9. The man ___ was a friend of mine.A. that you just talked toB. whom you just talked to himC. who you just talked to himD. which you just talked to10.I went to the school my father once worked.A. thatB. whichC. whereD. on which11. I shall never forget those years __ I lived in the country with the farmers,_________ has a great effect on my life.A. that; whichB. when; whichC. which; thatD. when; who12. The weather turned out to be very good, __ was more than we could expect.13. Carol said the work would be done by October, ___personally I doubt verymuch. A. it B. that C. when D. which14. Dorothy was always speaking highly of her role in the play, , of course, made the others unhappy.A. whoB. whichC. thisD. what第 3 页共 6 页15. _______ is known to all, China will be an ____ p owerful country in 20 or30 years' time.A. That; advancingB. This; advancedC. As; advancedD. It; advancing16. ________ i s mentioned above, the number of the students in senior schools isincreasing.A. WhichB. As C .That D. It17. ________ i s known to everybody, the moon travels round the earth once everymonth.A. ItB. AsC. ThatD. What18.It was an exciting moment for these football fans this year, for the firsttime in years their team won the World Cup.A. thatB. whileC. whichD. when19.Have you seen the film "Titanic", ___ leading actor is world famous?A. itsB. it'sC. whoseD. which20. We will be shown around the city: schools, museums, and some other places,_________ other visitors seldom go.A. whatB. whichC. whereD. when21. The famous basketball star, __ tried to make a comeback, attracted alot ofattention.A. whereB. whenC. whichD. who22. In the office I never seem to have time until after 5:30 p.m., manypeople have got home.A. whose timeB. thatC. on whichD. by which time23. ___________________________________________ Recently I bought an ancient Chinese vase, _____________________________ was very reasonable.A. which priceB. the price of whichC. its priceD. the price of whose24. After living in Paris for fifty years, he returned to the small townhe grewup as a child.A. whichB. whereC. thatD. when25. The film brought the hours back to me ___ I was taken good care of in thatfar-away village.A. untilB. thatC. whenD. where26. He's got himself into a dangerous situation __ he is likely to lose controlover the plane.A. whereB. whichC. whileD. why27. Did you remember to give Mary the money you owed her? -Yes. I gave it to her _____ I saw her.A. whileB. the momentC. suddenlyD. once28.Is this the reason ______ at the meeting for his carelessness in his work?A. he explainedB. what he explainedC. how he explainedD. why he explained29. I shall remember the day ___ we met first.A. thatB. whichC. whereD. when30. Can you lend me the dictionary __ the other day?A. about that you talkedB. That you talkedC. which you talkedD. that you talked about31. The book _____ isn ' t in the library.A. what I needB. I needC. that I need itD. which I need it32. It was raining, __ was a pity.A. whatB. whichC. thatD. it33. He studied hard at school when he was young , contributes to his success inlatter life.A. asB. thereforeC. whichD. so that34. _________________________ The size of the audience, we had expected, was well over one thousand.A. whomB. whoC. asD. that35. One of the most beautiful natural wonders in the United States is the Grand Canyon, located in northwestern Arizona.A. andB. whereC. isD. which is36. Do you know the worker ____ ?A. whom I often talkB. with who I often talkC I often talk with D. that I often talk第 5 页共 6 页37. Electric current can produce heat _ we can weld metals.A. whichB. in whichC. by means of whichD. what38. Heat has many effects, ___ we are familiar with through everyday experience.A. most of whichB. in whichC. thatD. that39. Ultra-sonic sound is __ is inaudible to human ear.A. such asB. the same asC. whichD. that40. Diesel engines are generally used for heavy-duty work the weight and sizeof the engine are not important.A. whichB. whenC. whereD. that参考答案练习一：1-5ABABC6-10DBBCB 11-15BAADB 16-20DDABC练习二：1-5AABCB6-10DACAC 11-15BBDBC 16-20BBDCC21-25DDBBC26-30ADDDD 31-35BBCCD 36-40CCAAB 分析：【难易程度】较难【内容】定语从句是初中的一个重难点语法，需要学生多加练习，从题中总结经验。
