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【英语】2018届二轮复习 状语从句考点讲与练(含有解析)学案(11页word版)
2018届二轮复习 状语从句考点讲与练 (一)时间状语从句 1.when,while和as的用法 连词 含义及用法 when “当……时候”,可与延续性动词或短暂性动词连用;从句动作可以发生在主句动作之前、之后或与主句动作同时发生 while “当……时候”,一般只可与延续性动词连用,从句动作与主句动作同时发生 as “一边……一边……”,常与延续性动词连用,从句动作与主句动作同时或几乎同时发生 When you apply for a job,you must present your credentials. 当你申请工作时,你必须递交你的有关证书。 Mary made coffee while her guests were finishing their meal. 客人们就要吃完的时候,玛丽去煮咖啡了。 As he grew older,he became less active. 随着他逐渐长大,他变得不那么活泼了。 [易错警示] 如果主句表示的是短暂性动作,而从句用延续性动词的进行时表示在一段时间内正在进行的动作时,when,while与as可互换使用。 When/While/As I was walking down the street,I came across an old friend. 我正沿着大街走时,碰巧遇到了我的一个老朋友。 2.before与since的用法 (1)before表示“在……之前;还未……就……;还没来得及……就……”。常用于以下句型: ·It will be+一段时间+before...多久之后才…… ·It won't be long before...不久之后就…… ·It was+一段时间+before...过了多久才…… ①John thinks it won't be long before he is ready for his new job. 约翰认为不久他就能为他的新工作做好准备。 ②(2016·江苏高考)One is that these instincts appear at a very young age before most parents have started to train their children to behave socially. 一个就是:这些本能在大部分家长开始训练孩子的社会行为之前,在非常小的年龄就出现了。 (2)since的用法 ①since表示“自从……”,其引导的从句在句中作状语时,主句常用现在完成时或现在完成进行时;从句常用一般过去时。 I have returned home twice since I settled down in the States. 自从我定居美国后,我回过两次家。 They have been living very happily since they got married. 自从结婚后他们一直生活得很幸福。 ②since引导的从句的谓语若是持续性动词,常理解为某一状态的终止;若是终止性动词,则理解为某一动作的开始。 He has written to me frequently since he was ill. 自从病好以来,他经常给我来信。 He has written to me frequently since he went abroad. 他自出国以来,经常给我写信。 ③since表示“自从……以来”,常用于“It is/has been+时间段+since从句”结构。该句型表示“自从开始(不做)……已经多长时间了”,一般从句的时态用一般过去时,主句中的时态用现在完成时。 As is reported,it has been/is over 100 years since Tsinghua University was founded. 据报道,清华大学已经建立了100多年了。 3.till,until和not...until...的用法 (1)until或till表示“某动作一直延续到某时间点才停止”,此时主句谓语动词是延续性动词,主、从句都为肯定式。这两个词可以换用,但till不可以置于句首,而until可以。 Have you heard the meeting will be put off till/until next Tuesday? 这个会议将被推迟到下周二,你有没有听说? (2)not...until...表示“直到……才”,主句谓语动词必须是非延续性动词。 As far as I know,his mother won't go to bed until he returns home every evening. 据我所知,他母亲每晚直到他回家才会上床睡觉。 4.表示“一……就……,刚……就……”的常用表达 (1)表示“一……就……”的表达 as soon as,immediately,directly,the moment,the minute,the instant The moment I heard the voice,I knew Father was coming. 我一听到那个声音就知道父亲来了。 (2)表示“刚……就……”的表达 no sooner...than...,hardly/scarcely...when...的时态搭配:no sooner与hardly/scarcely后的句子谓语动词应用过去完成时,而than与when引导的句子谓语动词应用一般过去时。此外,当把no sooner和hardly/scarcely提到句首时,应用倒装语序。 He had no sooner finished his speech than the students started cheering. =No sooner had he finished his speech than the students started cheering. 他刚完成演讲学生们就开始欢呼起来。 (二)条件状语从句 1.条件状语从句的常见引导词 if,unless(=if...not),so/as long as(只要),no condition that(条件是),if only(=if),provided that(如果),in case(万一,如果),suppose/supposing that(假设,如果),assuming that等均可引导条件状语从句。 ①We will have a picnic in the park this Sunday unless it rains or it's very cold. 除非下雨或天很冷,否则我们将在本周日去公园野餐。 ②My parents don't mind what job I do as long as I am happy. 我的父母不在意我从事什么工作,只要我高兴就好。 2.条件状语从句的时态 在条件状语从句中,常用一般现在时表将来含义;现在完成时表即将完成的情况;一般过去时表过去将来的含义。 ①(2016·天津高考)If we work hard,we will find a way out. 如果努力工作,我们会找到出路的。 If everyone does his part,the project will surely be a success. 如果大家都尽责,这个项目肯定会成功。 (三)让步状语从句 1.although,though,while引导的让步状语从句。 ①Though/Although/While regular exercise is very important,it's never a good idea to exercise too close to bedtime. 尽管有规律的锻炼很重要,但临睡前锻炼不是个好主意。 ②(2016·浙江高考)While online shopping has changed our life,not all of its effects have been positive. 尽管网上购物已经改变了我们的生活,但是不是所有的影响都是积极的。 2.as,though引导的让步状语从句需用部分倒装语序。 Hot as/though the night air was,we slept deeply because we were so tired after the long journey. 在长途跋涉之后,尽管夜晚的空气很热,我们还是因为累而睡得很熟。 3.“疑问词+ever”引导的让步状语从句,意为“无论……”。 However hard you try,it is difficult to lose weight without cutting down the amount you eat. 不管你多么努力,如果不减少饭量,减肥很难。 4.whether...or...引导的让步状语从句,意为“不论……还是……”,表示正反两种情况都不会影响主句的意向或结果。 We'll go on with the work,whether we can find the necessary tools or we cannot. 不管我们能否找到所需的工具,我们都要把这项工作做下去。 (四)地点状语从句 地点状语从句表示地点、方位,通常由where,wherever引导,可置于句首、句中或句尾。 I cannot hear the professor clearly as there is too much noise where I am sitting. 因为我坐的地方噪声太大,所以听不清教授在说什么。 [易错警示] where引导的定语从句与状语从句的区别: 地点状语从句与定语从句的区别在于从句在句中所作的成分,如果作状语,则是状语从句;如果作定语,则是定语从句。 The little girl who got lost decided to remain where she was and wait for her mother.(状语从句,其中remain为不及物动词) →The little girl who got lost decided to remain in the place where she was and wait for her mother.(定语从句) 那个迷路的小女孩决定待在原地等她的母亲。 (五)原因状语从句 原因状语从句可由because,as,since,now that,in that,considering(that)等词引导。 1.because译作“因为”,表示直接原因,语气较强,能回答由why提出的问句。 The old man asked Lucy to move to another chair because he wanted to sit next to his wife. 那位老人让露西换坐到另一把椅子上,因为他想挨着妻子坐。 2.as译作“由于”,语气较轻,常表示显而易见的原因;since(既然),now that(既然),in that(因为),表示双方都知道的原因,语气较弱。as,since和now that引导的从句多位于主句之前。 Now that you have got a job,you should learn to be independent of your parents. 既然你找到了一份工作,你就应该学会独立不依靠父母。 (六)方式状语从句 引导方式状语从句的从属连词有as,as if,as though等。方式状语从句应放在主句之后。其中as if或as though引导的从句常用虚拟语气,但如果从句中所陈述的情况很可能实现,也可用陈述语气。 ①The house was greatly damaged by the truck.We'd better leave things as they are until the police arrive. 卡车对这座房子造成了严重的损坏。我们最好保持原样直到警察到来。 ②The construction industry is no longer as depressed as it was. 建筑业不再像以往那样萧条了。 ③The old lady treats the boy as if he were her own son. 这位老太太对待这个男孩就像他是她自己的儿子似的。 (七)结果状语从句 1.引导结果状语从句的从属连词有:so...that...,such...that...。在非正式语体中,由so...that...,such...that...引导的句子中的that可以省略,注意其结构形式: ①He is such a learned person that we admire him very much. =He is so learned a person that we admire him very much. 他如此有学问,以至于我们都非常赞赏他。 ②It is such fine weather that we all want to go to the park. 天气如此晴朗,以至于我们都想去公园。 ③He earned so little money that he couldn't support his family. 他挣这么少的钱,以至于养不起家。 2.当so或such所在的主句主语与结果状语从句中的主语一致时,还可简化为:so/such...as to...。 He was so clever a student that he was able to work out all the difficult problems. =He was so clever a student as to be able to work out all the difficult problems. 他是一名如此聪明的学生,以至于他能够解决所有难题。 (八)目的状语从句 引导目的状语从句的从属连词有:so that,in order that,for fear that,in case(that),lest等。 1.in order that和so that引导的目的状语从句 两个连词都意为“以便……;为了……”,它们引导的状语从句中常用情态动词。 When he goes out,he often wears sunglasses so that/in order that nobody/no one can recognize him. 他出门的时候常戴着墨镜,以便没人能认出他。 2.for fear that,in case(that)和lest引导的目的状语从句 引导目的状语从句时,for fear that表示“害怕,担心某事会发生”;in case(that)/lest表示“以防出现某种情况”。 ①The boy hid himself behind the tree in case/for fear that his father should see him. 那个男孩藏在树后面,以防他父亲看到他。 ②(2016·全国乙卷)Larry told her that he had already put out the fire and she should not move in case she injured her neck. 莱瑞告诉她他已经扑灭了火,她不应当动弹以免她伤了脖子。 核心考点针对练 Ⅰ.单句语法填空 1.(2017·东城期中)It has been separated from other continents for millions of years, it has many plants and animals that cannot be found anywhere else in the world. 2.(2017·东城期中)I have never been to Rome that's the city I'd most like to visit. 3.(2017·杭州质检) there was no conclusive evidence,most people thought he was guilty. 4.(2017·西工大附中质检)More and more people are willing to shop online to get what they want,and I am one of them.I just can't help buying things I need them or not. 5.(2017·衡水中学七调)As we can see,developing a good habit is so important I would like to introduce one kind of good learning habit-keep a learning diary every day. 6.(2017·浙江名校联考) the wedding ceremony began,the couple nervously repeated their vows“We promise to love each other for better,for worse,for richer,for poorer,in sickness and in health”. 7.(2017·西安中学质检) we are satisfied with only a few rules we have memorized,we are not really learning the language. 8.(2017·赣中南五校适应性考试)Earthquake safety is very important and there is more to it just keeping buildings from falling down. 9.(2017·赣榆智贤中学检测) he has decided to come to see you,when do you think he will come? 10.(2017·泰兴四中检测)-It's a long time I saw you last. -Yes,and what a pity!It will be a long time we see each other again. 【答案】 1.so [句意:由于与其他大陆分开了好几百万年,因此那里有许多在世界别的地方找不到的植物和动物。前后两句为因果关系,故答案为so。] 2.but [句意:我从未去过罗马,但那是我最想去的城市。前后两句为转折关系,故答案为but。] 3.While/Although/Though [句意:虽然没有确凿证据,但大多数人认为他有罪。根据句意可知答案为While,Although或Though。] 4.whether [句意:越来越多的人愿意在网上买自己想要的东西,我就是其中之一。无论我需不需要,我都会情不自禁地买东西。根据语境可以推断出此处考查让步状语从句,whether...or not意为:无论……还是……。] 5.that [句意:正如我们看到的那样,养成一个好的习惯如此重要,以至于我想介绍一种好的学习习惯,即每天都要记学习笔记。根据语境可知此处考查so...that引导的结果状语从句。] 6.As/When [句意:当婚礼开始时,那对新人紧张地重复着他们的誓言“我们发誓彼此相爱,无论环境好坏、无论贫穷富足、无论生病健康。”根据上下文逻辑可知设空处引导时间状语从句,且从句谓语动词为瞬间动词,故答案为As或When。] 7.If [句意:如果我们对仅仅记住几条规则就感到满意的话,那我们就不是真的在学习这门语言。根据语境此处应该是考查条件状语从句,所以要用if引导。] 8.than [句意:地震安全非常重要,与防止建筑物倒塌相比,还有更多的事情要做。根据本句中的more可以设空处填than。] 9.Since [句意:既然他已决定来看你,你认为他什么时候来呢?since从属连词,既然。] 10.since;before [句意:——自从我上次见你到现在已经很长时间了。——是的,真遗憾!还得很长时间我们才会再次见面。“It is+一段时间+since...”意为:自从……到现在已经有一段时间了。“It will be+一段时间+before...”意为:还得有一段时间才会……。]查看更多