大学英语语法全书
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大学英语语法学习提纲一、词类、句子成分和构词法:1、词类:英语词类分十种:名词、形容词、代词、数词、冠词、动词、副词、介词、连词、感叹词。
1、名词(n.):表示人、事物、地点或抽象概念的名称。
如:boy, morning, bag, ball, class, orange.2、代词(pron.):主要用来代替名词。
如:who, she, you, it .3、形容词(adj..):表示人或事物的性质或特征。
如:good, right, white, orange .4、数词(num.):表示数目或事物的顺序。
如:one, two, three, first, second, third, fourth.5、动词(v.):表示动作或状态。
如:am, is,are,have,see .6、副词(adv.):修饰动词、形容词或其他副词,说明时间、地点、程度等。
如:now, very,here, often, quietly, slowly.7、冠词(art..):用在名词前,帮助说明名词。
如:a, an, the.8、介词(prep.):表示它后面的名词或代词与其他句子成分的关系。
如in, on, from, above, behind.9、连词(conj.):用来连接词、短语或句子。
如and, but, before .10、感叹词(interj..)表示喜、怒、哀、乐等感情。
如:oh, well, hi, hello.2、句子成分:英语句子成分分为七种:主语、谓语、宾语、定语、状语、表语、宾语补足语。
1、主语是句子所要说的人或事物,回答是“谁”或者“什么”。
通常用名词或代词担任。
如:I’m Miss Green.(我是格林小姐)2、谓语动词说明主语的动作或状态,回答“做(什么)”。
主要由动词担任。
如:Jack cleansthe room every day. (杰克每天打扫房间)3、表语在系动词之后,说明主语的身份或特征,回答是“什么”或者“怎么样”。
语法部分第一讲虚拟语气I. 考点分析:虚拟语气是动词的特殊形式,用来表达说话人的意愿、建议、请求、意图、惊奇、设想等未能或不可能成为事实的情况,以及在说话人看来实现的可能性很小的情况。
虚拟语气是非常重要的语法考点。
考查历届四级试题,我们发现与虚拟语气有关的考题每次至少2题,有时甚至3-4题。
虚拟语气的考查要点有:1. 虚拟语气的形式:分清虚拟时间和主从句的动词形式十分重要,因此我们把所有虚拟语气的不同类型列例如:If I were invited, I would come.If she were not ill, she could do a lot of things.3. if条件句中如谓语动词是were, had, should, could时,可以省略if, 把它们前置。
例如:Had my father a lot of money, he would send me abroad.Could I do it, I would surely do it.Should the Black Death reappear, what should we do?(万一黑死病再次出现,我们该怎么办?)4. 错综时间的条件句是难点,如99年1月第60题: If I hadn’t stood under the ladder to catch you when you fell, you wouldn’t be smiling now.(从句用过去完成时,主句用现在进行时)又如:If I were you, I would have gone to the film last night.(从句虚拟现在,主句虚拟过去);If we hadn’t got everything ready by now, we should be having a terrible time tomorrow.(从句虚拟过去,主句虚拟将来);If the weather had been more favorable, the crops would be growing still better.(从句虚拟过去,主句虚拟现在)5. 虚拟句的另一难点是省略if条件句的含蓄条件句,如:I would have written the paper before, but I have beenill.(=If I had not been ill, I would have written the paper before.);A true friend would have acted differently. (=A friend, if he had been true, would have acted differently.)6. 注意介词短语without, but for, in the absence等表示虚拟条件。
大学英语四级语法大全大学英语四级语法大全8.1 stop doing/to dostop to do停止,中断做某事后去做另一件事。
stop doing停止做某事。
They stop to smoke a cigarette.他们停下来,抽了根烟。
I must stop smoking.我必须戒烟了。
典型例题She reached the top of the hill and stopped ___on a big rock by the side of the path.A. to have restedB. restingC. to restD. rest答案:C。
由题意可知,她到了山顶,停下来在一个路边的大石头上休息。
因此,应选择"stop to do sth. 停下来去做另一件事"。
而不仅仅是爬山动作的终止,所以stop doing sth.不正确。
8.2 forget doing/to doforget to do忘记要去做某事。
(未做)forget doing忘记做过某事。
(已做)The light in the office is stil on. He forgot to turn it off.办公室的灯还在亮着,它忘记关了。
(没有做关灯的动作)He forgot turning the light off.他忘记他已经关了灯了。
( 已做过关灯的动作)Don’t forget to come tomorrow.别忘了明天来。
(to come动作未做)典型例题---- The light in the office is still on.---- Oh,I forgot___.A. turning it offB. turn it offC. to turn it offD. having turned it off答案:C。
由the light is still on 可知灯亮着,即关灯的动作没有发生,因此用forget to do sth.而forget doing sth表示灯已经关上了,而自己忘记了这一事实。
大学英语必会语法知识(精华打印版)一、虚拟语气1) 概念虚拟语气用来表示说话人的主观愿望或假想,所说的是一个条件,不一定是事实,或与事实相反。
2) 在条件句中的应用条件句可分为两类,一类为真实条件句,一类为非真实条件句。
非真实条件句表示的是假设的或实际可能性不大的情况,故采用虚拟语气。
二、真实条件句真实条件句用于陈述语气,假设的情况可能发生,其中if 是如果的意思。
时态关系句型:条件从句主句一般现在时shall/will + 动词原形If he comes, he will bring his violin.典型例题The volleyball match will be put off if it ___.A.will rainB. rainsC. rainedD. is rained答案B。
真实条件句主句为将来时,从句用一般现在时。
注意:1) 在真实条件句中,主句不能用be going to表示将来,该用shall, will.(错) If you leave now, you are never going to regret it.(对) If you leave now, you will never regret it.2) 表示真理时,主句谓语动词便不用shall (will) +动词原形,而直接用一般现在时的动词形式。
三、非真实条件句时态:可以表示过去,现在和将来的情况。
它的基本特点是时态退后。
a.同现在事实相反的假设。
句型:条件从句主句一般过去时should( would) +动词原形If they were here, they would help you.b.表示于过去事实相反的假设。
句型:条件从句主句过去完成时should(would) have+ 过去分词If she had worked harder, she would have succeeded.The rice would not have been burnt if you had been more careful.If my lawyer had been here last Saturday, he would have prevented me from going.If he had come yesterday, I should / would have told him about it.含义:He did not come yesterday, so I did not tell him about it.If he had not been ill and missed many classes, he would have made greater progress.含义:He was ill and missed many lessons, so he did not make greater progress.c.表示对将来的假想句型:条件从句主句一般过去时should+ 动词原形were+ 不定式would + 动词原形should+ 动词原形If you succeeded, everything would be all right.If you should succeed, everything would be all right.If you were to succeed, everything would be all right.四、虚拟条件句的倒装虚拟条件句的从句部分如果含有were, should, 或had, 可将if省略,再把were, should或had 移到从句句首,实行倒装。