读书破万卷下笔如有神非限定性定语从句一限定性定语从句与非限定性定语从句的区分：1.限定性定语从句与先行词不用逗号分开；非限定性定语从句与先行词往往有逗号隔开，如如将非限定性定语从句放在句子中间，前后都需要用逗号隔开；2.限定性定语从句与主句的关系很紧凑，对其先行词起限定、修饰的作用,从句不能省略 ,假如省略 , 整个句子意思不完整； 非限定性定语从句对主句起补充说明作用，缺少也不会影响全句的懂得；从句可以省略 ,eg. The old man has a son , who is in the army .那位老人有一个儿子，他在部队工作；2 The old man has a son who is in the army .那位老人有一个在部队工作的儿子；第 2 句所传达的信息是：可能老人仍有其他的儿子在干别的工作；二非限定性定语从句引导词1. 在非限定性定语从句中，关系词不能用that；2. which 引导的非限定性定语从句是用来说明前面整个句子的情形或主句的某一部分；eg. 1 The Tangshan earthquake was felt in Beijing, which is more than two hundred kilometers away.2 Tom said the work would be done by October, which I doubt very much.3. as 有时也可用作关系代词；as 引导非限制性定语从句，指代主句整个句子，如as 在从句中作主语， 其引导的句子可以放在句首，也可以放在句中； 但 which 引导的非限制性定语从句只能放句中；eg. As is reported in the newspaper ， some cultural relics will be on show in the museum on the weekend.三 as 作为非限定性定语从句的用法；固定搭配中，1 as is known to all=as we know; as is reported; as is expected=as we expected;as far as is concerned 等2 the same as; such；saos aseg. 1 He is such a strange personnobody can get on well with.2 He is such a strange personnobody can get on well with him.基础题：1) He left the money with his friend,he believes was useful to him.A. whoB. thatC. itD. which2) Air,we breathe every day, is necessar to life.A. whatB. whichC. thatD. when3) In the distance there is a hill,stands a white house.A. in whichB. on the top of whichC. on the top of itD. on the top of that4) He suddenly became ill,prevented him from going to school.A. thatB. whichC. whatD. who5) The young man is honest,has made him popular with his classmates.A. asB. itC. whichD. the one6) This is the house, the windowfaces south.A. ofwhichB. whichC. of itD. whose7) I, whoyour friend, should help you.A. amB. isC. beD. are8) The boyfather is a scientist is a top student in our class.A. whoseB. who sC. whoD. his9) Beihai Park is one of the most beautiful parksbuilt about 300 years ago in Beijing.A. where wereB. which wasC. that wasD. that were10) It s the fifthetimlate this term.A. that you ve arriveBd . that you arrivedC. when you ve arrived D. when you arrived11) The reasonhe was late today ishe didn t get up on time.A. that; thatB. why; becauseC. which; thatD. why; that12) I shall never forget those daysI spent in the countryside with the peasants,has a great effect on my life.A. when, whoB. when, whichC. which, whoD. which, which13) It was nearly six o clock e finishewd our work.A. thatB. whenC. whileD. since14) Xie He hospital is the very placehe was born.A. thatB. whichC. whereD. there15) Xie He hospital is the very placeshe visited yesterday.A. thatB. whichC. whereD. there16) Who is the manis helping the old man to get on the bus.A. whomB. whichC. whoseD. that17) I ll doI can to help you.A. all whatB. all whichC. allD. which18) They talked for an hour of things and personsthey remembered in the school.A. whomB. whichC. thatD. who19) There are 45 students in our class, mostare boys.A. of themB. of whomC. of whoD. of which20) He is the teacherhelp we have made great progress.A. under hisB. with hisC. under whoseD. with whose21) The librarywe often go on Monday is not far from our school.A. to whichB. from whichC. to whereD. to there22) Did you take away the bookyesterday.A. what I showed youB. which I showed it to youC. I showed youD. I showed it to you23) There are two rooms on the first floor,is used as a guest room.A. a smaller of whichB. a smaller of themC. the smaller of whichD. the smaller of them24) Have you found the pen-.A. you wroteB. by which you did homeworkC. which you did homeworkD. with which you did homework25) In the dark street, there wasn t a single personshe could turn for help.A. thatB. whoC. from whomD. to whom26) Tangshan was attackedbysuch aterribleearthquake experienced before.A. asB. and it wasC. thatD. which27) He is such a lazy mannobody wants to work with.A. as; hisB. that; /C. as; /D.whom; him28) Can you lend medictionarywe used last night.fewcitizenshad everA. such; whichB. same; asC. such a; whichD. the same; as29) , the Great Wall came into being in Qin Dynasty.A. It s clear B. We all knowC. As we all knowD. Which we all know高一英语必修三语法复习 被动语态（一）被动语态的构成形式1. 被动语态的基本时态变化1） am/is/are +done一般现在时例 Visitors are requested not to touch the exhibits. 2） has /have been done 现在完成时例 All the preparations for the task have been completed, and were ready to start.（3） am/is /are being done 现在进行时例 A new cinema is being built here.（4） was/were done 一般过去时例 I was given ten minutes to decide whether I should reject the offer.（5） had been done 过去完成时例 By the end of last year, another new gymnasium had been completed in Beijing.（6） was/were bei