统考大学英语B语法概要骄阳书屋

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统考大学英语B语法概要大学英语B级统考之语法部分主要测试项目有:非谓语动词,状语从句,动词时态,定语从句,倒装句,主谓一致,名词性从句,强调句,动词的主动和被动语态,虚拟语气等为方便考生对语法知识的复习,现将考试当中重点涉及的内容总结如下:(一)非谓语动词在英语中,不作句子谓语,而具有除谓语外其他语法功能的动词,叫做非谓语动词。非谓语动词包括动词不定式、动名词、现在分词、过去分词;有一般态、进行态和完成态三种形式以及相应的主动与被动语态。A知识要点1动词不定式和动名词都可作主语。e.g. Seeing is believing. 眼见为实。To refuse him is not easy this time. 这次很难拒绝他。注意:常用it作形式主语,而将动词不定式放在谓语后面。e.g. It is impossible for us to measure it in miles. 让我们用英里来计算不太可能。(不定式前加一个for us表示不定式的动作是谁做的)2动词不定式和动名词都可作宾语。(1)有些及物动词只能用不定式作宾语,如:hope,want,wish,decide,manage等:e.g. We all hope to see you. 我们都希望见到你。(2)有些及物动词只能用动名词作宾语,如:finish, avoid, enjoy, mind, insist on 等:e.g. He has finished doing his work.他已经干完了他的工作。(3)有的及物动词既可用不定式,也可用动名词,但其意义有所不同。如:remember, forget, regret, stop ,前者表示动作还没有做,后者表示动作已经做了。e.g. I forgot to take aspirin this morning. 我上午忘了吃阿斯匹林了(但现在想起来了)。e.g. I forgot taking aspirin and took it again a few minutes ago. 我忘了吃过阿司匹林,几分钟以前又吃了一次。3动词不定式和分词作补足语。(1)一些表示感官词或使役动词,如see, hear, have, make, let等后面用不带to的不定式作宾补。(2)不定式做宾语补足语,表示动作发生了(即动作的全部过程结束了);现在分词作宾补,表示动作正在发生(即处于发生的过程中),如:e.g. I saw the boy climb the wall. 我看见小孩爬墙了。(强调爬墙这件事)e.g. I saw the boy climbing the wall.我看见小孩在爬墙。(强调爬墙的情景)(3)现在分词作补足语,它与被补足的词之间是主动关系;过去分词作补足语,它与被补足的词之间是被动关系。如:e.g. I heard someone calling me. e.g. I had my house painted. 我让人给房子刷了油漆。(直译:我让房子被刷了油漆)4非谓语动词作状语和定语时,尤其是分词作状语时,要注意分词所隐含的逻辑主语必须和句子的主语一致。现在分词表示的动作和句子的主语之间是主动关系,过去分词表示的动作和句子的主语间是被动关系;分词作定语时,现在分词表示的动作和它所修饰的词之间是主动关系,过去分词表示的动作和它修饰的词之间是被动关系。e.g. Working in the factory, he was an advanced worker.在工厂工作时,他是名先进工人。e.g. Seen from the hill, our school looks more beautiful.从小山上看,我们学校显得更美丽。5非谓语动词也有否定结构、时态、语态。非谓语动词的否定结构是在它们前面加not来构成。如果非谓语动词表示的动作发在主要谓语动词所表示的动作之后或同时,用一般式,如果非谓语动词表示的动作在主要谓语动词所表示的动作之前,则用完成式。e.g. They decide not to go.他们决定不去。e.g. Toms not passing the exam made his father very angry.汤姆考试没有及格,这令他父亲非常生气。 e.g. Having finished the work, he went home.干完活后他回家了。(分词having finished发生在went前) B例题讲解1)Bob said that it is easy _.A. for him being on timeB. being on time for himC. for him to be on timeD. on time for him解析:答案C。此题that从句中,用it作形式主语,而将不定式to be on time(准时)放在句子最后面。不定式前加一个for him表示不定式的动作是谁做的。2)Would you let _ to the park with my classmate, Mum? (大学英语(B)Test 4, 28) A. me goB. me goingC. I goD. I going解析:答案A。let是使役动词,用不带to的不定式作宾补,即let sb. do sth.这个结构。3)You dont mind _ you Xiao Li, do you? (大学英语(B)Test 3, 31)A. call B. to callC. to callingD. my calling解析:答案D。mind后面只能用动名词作宾语。4)Charles regretted _ the TV set last year. The price has now come down. (大学英语(B)Test 3, 33)A. buyingB. to buyC. ofD. from解析:答案A。regret后既可用动名词,也可用不定式,前者表后悔做了某事(动作已做了),后者则表为要去做某事遗憾(动作还没有做)。根据题意思,应选A。5)There was so much noise in the classroom that the teacher couldnt make himself _. (大学英语(B)Test 4, 41) A. heardB. hearingC. to hearD. hear解析:答案A。宾语与宾语补足语之间是被动关系,所以用过去分词。6)Do you know the man _ under the apple tree? (大学英语(B)Test 2, 31)A. layB. lainC. lyingD. laying解析:答案C。lie(lay, lain, lying)“平躺,位于”;lie(lied, lied, lying)“撒谎”;lay(laid, laid, laying)“放置”。根据题意,应该用“平躺”之意。分词表示的动作与其修饰的词之间是主动关系,用现在分词,所以选C。7)_ tomorrows lessons, Frank has no time to go out with his friends. (大学英语(B)Test 5, 45) A. Not preparingB. Not having preparedC. Not to prepareD. Being not prepared解析:答案B。非谓语动词的否定形式都是在最前边加not,排除D。由于“还没有完成对明天功课的准备”,因此“不能跟朋友外出玩耍”,根据句意,强调动作的完成性,用完成式。(二)状语从句A. 知识要点用作状语的从句称为状语从句。它主要用于修饰句子中的谓语动词,从各个方面来修饰、说明谓语动词发生时的各种情况。状语从句的连接副词有很多,比如:when(当时候)while(当时候), as(正当时), every time(每当), before(在以前), since(自以来), until / till(直到), hardly when(刚就),because (因为), as(在.时候;像一样;因为), since(既然),if(如果), though(虽然), as, than等等。例句:(1)When she woke up, she found everybody had gone. 她醒来时,她发现大家都走了。(时间状语从句)(2)Dont try to get on the train until / till it stops.等火车停下来再上车。(时间状语从句)(3)Wherever I go, I will bring an umbrella with me. 我不管到哪,都会带上一把伞。(地点状语从句)(4)He was worried because he hadnt had any letter form his child. 他很着急,因为他一直没有收到他孩子的信。(原因状语从句)(5)Ill ring him up at once so that he shouldnt wait for me. 我马上给他挂电话以便他别等我了。(结果状语从句)(6)If the weather is fine tomorrow, we shall go to the country. 如果明天天气晴朗,我们就到乡下去。(条件状语从句)(7)Although he is little, he is brave. 他人虽小,但很勇敢。(让步状语从句)(8)I admire and respect you more than everybody else (does). 我比其他的人都更钦佩和尊敬您。(比较状语从句)B例题讲解1)No matter _, the little sisters managed to round the sheep up and drive them back home safely.(大学英语(B)Test 1, 45)A. it was snowing hardB. hard it was snowingC. how it was snowing hardD. how hard it was snowing解析:此题为“no matter疑问词”引导让步状语从句,因此可以排除A和B,而how疑问词后面要接副词或形容词,因此正确答案为D选项。(三)动词的基本时态理论基础:什么是动词的时态?动词的时态,是指一种语言通过动词形式的变化来反映“动作时间”和“动作状态”-“时态”就是“动作时间+动作状态”的合称。英语有“现在时、过去时、将来时、过去将来时”这样4种动作时间的区分,有“一般态、完成态、进行态、完成进行态”这样4种动作状态的区分。对“动作时间”和“动作状态”进行排列组合,我们可以得到下面的结果:时间 状态一般(态)完成(态)进行(态)完成进行(态)现在时一般现在时现在完成时现在进行时现在完成进行时过去时一般过去时过去完成时过去进行时过去完成进行时将来时一般将来时将来完成时将来进行时将来完成进行时过去将来时一般过去将来时过去将来完成时过去将来进行时过去将来完成进行时通过排列组合,我们得知英语一共有16种不同的时态。这种排列组合就像化学元素周期表一样严整,令人赞叹。但是在日常生活中,这些时态使用的频率有高有低,像“过去将来完成进行时(态)”是极少用到的。在日常生活中最常用的是以下8种时态,是考试的内容,需要大家全部掌握。A. 知识要点1一般现在时态动词形式为do 或does (第三人称单数)。通常表示客观事实或真理;或表示经常发生的、习惯性的动作或存在的状态。e.g. The earth moves around the sun.地球绕着太阳转。He always goes to school by bike.他总是骑车去上学。(特别提醒:.一般现在时可以代替将来时,用于时间状语从句和条件状语从句中。)e.g. Please be sure to telephone me the next time you come. 下次来之前请一定给我来电话。2一般过去时态动词形式为did. 表示过去时间所发生的动作或存在的状态,常与过去特定的时间状语连用;或表示过去某一段时间一直持续或反复发生的动作,可与表示频度的时间副词连用。e.g. I bought this computer five years ago.He often took a walk after supper when he was in Shanghai.3一般将来时态动词形式为will do/ shall do /be going to do. 表达在未来某个时间将要发生的动作或存在的状态。 e.g. The telephone is ringing. I will answer it.电话在响,我去接。4现在进行时态 动词形式为is/am/are+ doing,表示此时此刻或现阶段正在进行的动作。e.g. The police are looking for the two missing children.警察们正在寻找两个丢失的孩子。5过去进行时态 动词形式为 was/were + doing,表示过去某个时刻正在进行的动作。(主语是I,she,he时用was)e.g. Jane burnt her hand when she was cooking the dinner.6现在完成时态动词形式为have / has done,常与already,recently, never,ever, yet,since连用。用来表示过去发生的对现在有影响的动作。e.g. The milk has already become undrinkable 牛奶已经不能喝了。或者表示过去某时间开始一直延续到现在的动作。e.g. He has lived here since 1949.自从1949年以来,他一直住在这儿。7过去完成时态动词形式为had done. 表示在过去某一时刻以前已经开始并一直延续到这一时刻、或是在此刻前已经完成的动作。e.g. By the end of last term we had learned 1000 English words.到上学期末,我们已经学了1000个英语单词。B例题讲解1)When Lily came home at 5 p.m. yesterday, her mother _ dinner in the kitchen. (大学英语(B)Test 1, 36)A. cookedB. was cooking C. cooksD. has cooked解析:B。此题意思为:当Lily昨天下午五点回家时,妈妈正在厨房里做饭。用过去进行时。2)Johns father _ mathematics in this school ever since he graduated from Harvard University. (大学英语(B)Test 1, 40)A. taughtB. teachesC. has taughtD. is teaching解析:C。此题意思为:约翰的父亲自从哈佛大学毕业后就一直在这所学校读书,这种状态一直持续到现在,所以句子用现在完成时。3)I was giving a talk to a large group of people, the same talk I _ to half a dozen other groups before. (大学英语(B)Test 2, 45)A. was givingB. am givingC. had givenD. have given解析:C。凡是表示过去动作之前的动作要用过去完成时态“had done”。根据题意可知had given的动作发生在was giving之前,所以用过去完成时态。(四)定语从句A. 知识要点(1)在句子中作定语的从句称为定语从句。 e.g. He is the person who / that is going to give a concert on the century square. 先行词 关联词他是那个要在世纪广场上举行音乐会的人。(2)关联词在定语从句中充当一定成分, 关系代词/副词先行词在从句中的作用关系代词who指人作主语whom作宾语(可省)that指人或物作主语/宾语(作宾语时可省)whose作定语which指物作主语/宾语关系副词when表示时间的名词作时间状语where表示地点的名词作地点状语why reason作原因状语e.g. A man who does not try to learn from others cannot hope to achieve much. 一个不向别人学习的人是不能指望有多大成就的。(在定语从句中作主语) The engineers (whom / that) we met yesterday have worked out a new machine. 我们昨天碰到的那些工程师设计出了一种新的机器。(在定语从句中作宾语) It is a problem which needs very careful consideration. 这是一个需要非常认真考虑的问题。(在定语从句中作主语) Madame Curie is a great scientist whose name is known all over the world. 居里夫人是一位世界闻名的大科学家。(在定语从句中作name的定语)We can never forget the day when Hong Kong returned to our homeland. 我们永远不会忘记香港回归祖国的那一天。(在定语从句中作时间状语) The building where you used to live has been pulled down. 你过去曾住过的那栋大厦已经被拆除了。(在定语从句中作地点状语) We know the reason why he was very angry. 我们知道他为什么非常生气。(在定语从句中作原因状语,其先行词一般是reason)(3)只能用关系代词that的情况: 先行词为all, anything, something等不定代词时,只能用that;e.g. I have never taken anything that doesnt belong to me. 我从未拿过不属于我的任何东西。 先行词前有最高级形容词及序数词first, last, next, only等修饰词时,只能用that。e.g. He was one of the greatest scientists that ever lived. 他是有史以来最伟大的科学家之一。 He is the only one among us that knows English. 他是我们当中唯一一个懂英语的人。(4)只能用关系代词which的情况: 定语从句前出现逗号时,只能用which引导;e.g. I never met Mary again, which was a pity. 关系代词在定语从句中作宾语且前面有介词时,只能用which引导。e.g. The music to which we listened last night was written by my father. 我们昨晚听的那首曲子是我父亲写的。B例题讲解1)Did you notice the guy _ head looked like a big potato?(大学英语(B)Test 1, 37)A. whoB. whichC. whoseD. whom解析:此题中,the guy是先行词,并且在定语从句中主语、谓语和宾语都不缺,只缺少名词主语中head的定语,表示“那个家伙的头看上去像个大马铃薯”,因此正确答案为C选项。2)While I was in the university, I learned taking a photo, _ is very useful now for me.(大学英语(B)Test 4, 32) A. itB. whichC. thatD. what解析:此题是which引导非限制性定语从句,that不能引导非限制性定语从句,而A和D是不能引导定语从句的,因此正确答案为B选项。3)It is the best _ I have seen. (大学英语(B)Test 4, 42) A. thatB. whoC. whomD. which解析:先行词为the best,是good的最高级形式;在定语从句中,先行词为形容词最高级或有最高级形容词修饰词时,只能用that,因此正确答案为A选项。4)Children under fifteen are not permitted to see such kind of movies _ bad for their mental development.(大学英语(B)Test 5, 38) A. that isB. which isC. as isD. what are解析:such能与as或that搭配,分别引导定语从句和状语从句,因此排除B和D。在此题中,_ is bad for their mental development这句话中,缺少主语,因此该句为as引导的定语从句,as代替kind of movies做定语从句中的主语,因此正确答案为C选项。5)The film brought the hours back to me _ I was taken good care of in that remote village.(大学英语(B)Test 6, 42) A. whenB. whereC. thatD. until解析:此题中,the hours为先行词,表时间,而在从句中缺少的就是相应的时间状语,因此正确答案为A选项。(五)倒装句A. 知识要点倒装是指将句子的谓语动词或其助动词放在主语之前。 e.g. Then began a war between the two countries. 于是两国之间开始了战争。(全部倒装) Seldom have we felt as comfortable as here. 我们很少感觉像在这里这么舒服。(部分倒装) 常用倒装的两种情况1出于句子结构的需要(1)在as, though引导的让步状语从句中,从句往往放在主句的前面,而且从句须以形容词、副词、名词或动词(原形)等开头。e.g. Hard as she studied, she failed in this examination.(2)代词so, neither, nor等副词置于句首时, 表示“也(不/没有)”全句要倒装e.g. Tom can speak English. So can Jack. 汤姆会讲英语,杰克也会。2出于强调never, seldom, little, nor, hardly(when), scarcely(when), no sooner(than), not only, not until等表示否定的副词或连词位于句首时;e.g. Never in my life have I seen such a thing. 我一生中从未见过这样的事情。 e.g. Not only did he hear, but also he saw it.他不但听见了,而且也看见了。B例题讲解1)Never before _ see such a terrible car accident on the road! (大学英语(B)Test 1, 39)A. I haveB. have IC. I didD. did I 解析:表示否定意义的词never放在句首,要倒装,因此排除A和C选项;考查B选项,助动词用的have,与后面的动词原形see不一致,因此正确答案为D选项。2)I was satisfied with her explanation, _. (大学英语(B)Test 3, 42)A. so my classmates wereB. so were my classmatesC. so my classmates didC. so did my classmates解析:用so, neither / nor引导句子表示与上文已经提到的肯定或否定意思一致时,so, neither / nor引导的句子要倒装,并且所用的谓语动词及其时态要与前面一句话的谓语动词及其时态保持一致,因此正确答案为B选项。3)Hardly _ on stage _ the audience started cheering. (大学英语(B)Test 4, 40)A. he had come / thanB. he had come / whenC. had he come / whenD. had he come / than解析:hardlywhen是固定搭配,表示“一就”;并且hardly意思是“几乎不”,表示否定意义,放在句首要倒装,因此正确答案为C选项。4)Important _ his discovery might be, it was regarded as a matter of no account in his time. (大学英语(B)Test 5, 42) A. when B. untilC. asD. although解析:该句的意思是“_他的发明也许重要,在他那个时代,它被视为一件不重要的事情。”,根据句子的含义,可以看出前后两句话是转折的关系,因此选项部分应为让步状语从句,而在让步状语从句中,如果形容词或名词位于句首,则要用as或though,因此正确答案为C选项。(六)主谓一致A. 知识要点主谓一致就是谓语动词必须在数和人称上与主语取得一致。主谓一致的关系根据“语法一致”、“意义一致”、和“就近一致”三项原则来实现。1语法一致(1)由and连接两个或两个以上的并列主语时(指的是两个或两个以上不同的人或事物)谓语动词用复数。e.g. The woman and her husband work in the same office.那妇女和她丈夫在同一个单位工作。(2)做主语的名词后面有as well as, with, together with, except, but, like, no less than等引导的短语时,谓语动词的数由做主语的名词决定。e.g. An expert, together with some assistants, was sent to help in this work. 一位专家和几位助手被派去协助这项工作。 The children, like their parents, are very kind-hearted.这些孩子像他们的父母一样都那么好心肠。(3)主语为动词不定式(to do)、动名词(V-ing) 以及从句做主语时谓语动词用单数。e.g. To see is to believe. (Seeing is believing.) 眼见为实。 What he told us was not the truth. 他所告诉我们的不是事实。2. 意义一致(1)有and连接两个或两个以上的并列主语时,但是表示同一人或事物,或代表一个概念,动词用单数。e.g. The professor and president of our school is retired. (2)主语为all, half, most, some, any, none等不定代词时,通过上下文确定其实际意义,谓语动词的单复数形式则根据主语的实际意义来决定。e.g. His weekends? Half are spent in the country. 他的周末?一半是在乡下度过的。 His time? Half was spent on books. 他的时间?一半是花在了读书上。(3)主语为形容词或分词加定冠词转化来的名词时, 如果指一类人,为复数意义,谓语动词用复数;如果指单个人或抽象概念,为单数意义,谓语动词用单数。e.g. The killed were buried on the hillside. 那些被害者被埋在了山坡上。 The killed was his neighbor. 那被害者是他的邻居。3就近一致主语为eitheror, neithernor, not onlybut also等连接的并列名词时,谓语动词的数取决于它最靠近的名词的数。e.g. Neither the children nor their father was in the car. 无论是孩子们,还是他们的父亲都不在车里。e.g. Neither the father nor his children were in the car. 无论是父亲,还是他的孩子们都不在车里。B例题讲解1)Both the kids and their parents _ English, I think. I know it from their accent.(大学英语(B)Test 1, 38)A. is B. beenC. areD. was解析:答案C。bothand表示“两者都”,连接的是两个不同的主语,因此谓语动词要用复数形式,所以正确答案为C选项。2)Two thousand dollars _ enough for the car. (大学英语(B)Test 2, 36)A. beingB. wereC. areD. is解析:答案D。此题是用钱来做主语,而货币单位做主语时看作单数,因为它在概念上属于一个整体,因此正确答案为D选项。此外,距离、重量、时间等单位充当主语时也看作单数。3)The young _ interested in pop music. (大学英语(B)Test 5, 41) A. isB. haveC. hasD. are解析:答案D。此题的主语是the形容词表示一类人,意思是“年轻人”,表示的是复数意义,因此谓语动词也要用复数形式,并且表示“对感兴趣”是用的be interested in sth,正确答案为D选项。(七)名词性从句1名词从句A. 知识要点在句中起名词作用的从句称为名词从句,可以在句中作主语、宾语或介词宾语、表语、同位语等。名词性从句通常由that, whether/if, 疑问词(which, what, why, how等)以及连接词(whenever“无论什么时候”, whatever“无论什么”等)引导。(1)由that引导的名词从句:that无任何语义,不做句子成分,仅起连接主、从句的作用。在宾语从句中常可省去,其他名词从句中不能省。e.g. That she doesnt understand spoken English is obvious. 很明显她不懂口语。(主从)I think (that) he is a good actor. 我认为他是个好演员。(宾从)The truth is that he is only eighteen. 事实是他只有18岁。(表从)The fact that Ann was late didnt surprise me.安迟到的事实不足为奇。(同位语从句)(2)由whether / if 引导的名词性从句:whether / if表示“是否”的意思。e.g. Whether she goes with us (or not) is not important to me. 她是否和我们一起去对我而 言不重要。(主语从句)I dont know whether/if he will come. 我不知道他来不来。(宾语从句)(3)由疑问词引导的名词性从句:疑问词引导名词性从句时,在从句中担任语法成分,而且常保留其本身的含义。e.g. Why they left the country is a secret.他们为什么离开了乡下是个秘密。(主从) She explained to him how he can start the car. 她向他解释怎样才能启动这辆汽车。(宾从) The question was who owned the house. 问题是谁是那房子的主人。(表从)(4)名词从句中注意的几点:that引导主语从句或宾语从句时,可用it作形式主语或形式宾语。e.g. It is strange that he make a mistake. 真怪,他竟做错了。(主从,it为形式主语,真正的主语为that所引导的从句)e.g. He made it quite clear that he preferred to study English. 他很明确地说他宁愿学习英语。(宾从,it为形式宾语,真正的宾语为that所引导的从句)在同位语从句中,可接同位语的名词通常是抽象名词,且通常带冠词。常见的有:idea(主意), belief(信仰), doubt(疑问), evidence(证据), fact(事实), hope(希望), message(消息), news(消息), orders(命令), plan(计划), promise(许诺), feeling(感觉), truth (真理,事实)等。B例题讲解1)With his work completed, the manager stepped back to his seat, feeling pleased _ he was a man of action. (大学英语(B)Test 2, 38)A. whichB. thatC. whatD. whether解析:此题中he was a man of action这个句子做pleased的宾语,而在这个宾语从句中句子成分完整且不缺词义,因此正确答案为B选项。2)I have the complacent feeling _ Im highly intelligent. (大学英语(B)Test 3, 34)A. whatB. whichC. thatD. this解析:feeling后面的句子是一个同位语从句,要用that来引导,因此正确答案为C选项。3)We all thought _a pity that you were unable to attend our meeting.(大学英语(B)Test3, 36)A. thatB. which C. thisD. it解析:此题中,that所引导的从句是真实宾语,因此在谓语动词thought之后缺少一个形式宾语it,因此正确答案为D选项。(八)强调结构A. 知识要点强调句的结构是:“It is / was + 被强调部分(主语、宾语、表语或状语) + that(who)”。当被强调的部分指的是事物、时间、地点、原因、方式时,一律用that;当被强调的部分指的是人物时,用that或who皆可。e.g. Mrs. Brown came to visit our college on Wednesday. It was on Wednesday that Mrs. Brown came to visit our college. 布郎太太是在星期三来参观我们学院的.注意以下几点: 被强调的部分为句子中除谓语动词以外的所有成分,但无论强调句子的什么成分,如时间状语、地点状语等,都用that引出句子的其他部分,而不用when, where; 在强调人时,如果被强调的部分在原句中作主语,用that或who皆可;如果被强调的部分在原句中作宾语,用that、who或whom皆可; 在此结构中be动词只有时态的变化,没有数的变化,即不管被强调的部分是单数还是复数,一律用is / was; 被强调的部分是从原正常句子中为强调而提取出来的那一部分,因而要保持原来句子的时态,主语、宾语是代词都仍用代词 It is / was not until that 是强调句型中常见的强调时间状语从句的句式,that后用肯定式。e.g. I didnt know what kind of a country she is until I came to China. It was not until I came to China that I knew what kind of a country she is.正是直到我到了中国我才知道她(指中国)是一个怎样的国家。B例题讲解1)It was on the beach _ Miss White found the kid lying dead. (大学英语(B)Test 3, 35)A. thatB. thisC. itD. which解析:It wasthat为强调句型,此句话中强调的是地点状语。因此正确答案为A选项。2)It is not until you have lost your health _ you know its value. (大学英语(B)Test6, 44) A. untilB. whenC. whatD. that解析:It is not untilthat为强调句,强调的是until时间状语,因此正确答案为D选项。(九)动词的语态A. 知识要点1动词的语态表示主语和谓语之间的关系。英语有两种语态:主动语态表示主语是谓语动作的执行者,被动语态表示主语是谓语动作的承受者。被动语态的形式:be+过去分词。e.g. Such stories are published for children.e.g. The TV was turned on and everybody sat there, watching it. 2英语中的一些感官动词如see, watch, notice, hear和使役动词make, have, let +不带to的不定式(do sth.), 但在被动语态中to则不能少。e.g. I saw him enter the classroom. / He was seen to enter the classroom.3在need, want, require等及物动词后面接动名词的主动形式可以表示被动含义。e.g. My hair needs cutting.我该理发了。注意:The book is worth reading. 这本书值得一读。B例题讲解1)Every year thousands of lives _ in road accidents because of careless driving. (大学英语(B)Test 1, 41)A. loseB. lostC. have lostD. are lost解析:D。因为是每一年,所以句子用现在时;生命被夺走,所以用被动语态。 2)After the Minister of Education had finished speaking at the press conference, he was made _ all sorts of awkward questions. (大学英语(B)Test 3, 40)A. answerB. answeringC. answeredD. to answer解析:D。题项中将make sb. do sth.(让某人干某事)转换成了被动语态 sb. was made to do sth.(某人被让干某时),因此to不能少。3)My watch has been losing time for the past week. It probably needs _.A. cleaningB. to cleanC. cleanedD. to be cleaning解析:A。need+动名词主动形式(cleaning)可以表被动含义。(十) 虚拟语气A虚拟语气是动词的一种特殊形式,用来表达说话人的主观愿望和假想虚拟的情况,考试中以虚拟语气为考点的试题也不算少,大家应该尽量掌握。B知识要点1虚拟语气用于if引导的条件状语从句表示对不可能发生的事实的一种假设;或对已经发生过的事实进行一种相反情况的假设; 时 间从句谓语形式主句谓语形式虚拟现在时(与现在事实相反)动词的过去式(be一般用were)should (would, could,might )+动词原形虚拟过去时(与过去事实相反)had doneshould (would, could,might )+have done虚拟将来时(与将来事实可能相反) 动词过去式should+动词原形were to+动词原形should (would, could,might )+动词原形 2虚拟语气用在表示要求、命令、建议语气的词引导的从句中:(1)用在动词suggest(建议), order(命令), insist(坚持), require(需要), demand(要求),propose(提议)等引导的宾语从句中,以及它们相应的名词suggestion, order, insistence, demand, proposal 后面的表语和同位语从句中,这个从句的谓语要用“(should)+动词原形” e.g. We suggested that he(should)start now.我们建议他现在就开始。e.g. My suggestion is that we(should)send a few people to help the other groups.我的建议是我们派几个人去帮助别的小组。 (2) 用在“It +be+ natural(necessary,strange,important,essential以及insisted,suggested,ordered)+that”结构中的that引导的主语从句以及它们相应的名词(引导的表语和同位语从句中;从句的谓语用“(should)+动词原形”e.g. Its necessary that you should be present at the meeting. 你有必要参加会议。3虚拟语气运用其他从句中:(1)运用在wish后面的从句中表示“愿望”,运用在as if从句中表示“好像”,谓语形式:用动词的过去式虚拟现在的情况;用过去完成式虚拟过去的情况;用would(或might)+动词原形虚拟将来的情况。I wish I knew the answer. 但愿我知道答案。It is wished that he had not made the mistake.他要没犯此错误该多好。 The old lady is quarrelling with others as if she were mad.那位年老的女士正在和其他人争吵,就好像她疯了一样。(3)运用在would rather后面的从句中 表示“希望”,用动词的过去式虚拟现在或将来的情况,用过去完成式虚拟过去的情况。 e.g. Id rather I had seen the film. 我真希望我看过这部电影。(4)运用在It is (high) time后边的从句中 表示“该干的时间到了”,用动词的过去式或should+动词原形。e.g. It is time
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