大学英语读书笔记.doc
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1、精品文档,仅供学习与交流,如有侵权请联系网站删除大学英语(读书笔记)姓名:_年_月_日【精品文档】第 23 页 大学英语一、时态(一)一般现在时1.基本用法(1)其表现在的事实或状态。I know youre busy.(2)表经常或反复发生的动作。He smokes a lot.(3)自然现象或永恒真理。Gases expand when heated.(4)表现在时刻发生的动作。如运动解说、演示说明、动作描述、剧情介绍等等。(5)一般现在时表示将来情况。The plane takes off at 1130 and arrives in Shanghai at 1320.The show
2、begins at seven and ends at ten.主句可用将来时或含有情态动词,从句用一般现在时或其它时态。Ill give her the telex when she comes.If we hurry, we may catch the bus.2.基本结构(1)主+be(am, is, are)+名(介词短语,代词)Tomorrow is Saturday.(2)主+实义动词+宾I regret my ignorance on the subject.(3)注意其否定、疑问变化。Do, dont, does, doesnt.(4)动词的复数即实义动词的变化规则(略)。第三
3、人称单数形式。3.与一般现在时适用的状语Now and then, every,so often,currently,nowadays,these days.at present, rarely,as a rule etc.(二)现在进行时1.基本结构be(am, is, are)+doing(其为实义动词)其否定、疑问变化形式。2.基本用法(1)表示此时此刻正在进行或发生的动作,其时间状语一般用now, at the moment etc.(2)表现阶段的一段时间正在进行或发生的动作,但说话的此刻动作不一定正在进行着,时间状语通常为recently, these days etc.Hes m
4、aking the plan these days.(3)现在进行时,表将来时,时间状语有tomorrow, next week等。如arrive, come, go, get, leave, spend, start, stay, work etc.Im seeing my friend this afternoon.(4)Be doing其动词的变化规则(略)。3.现在进行时中对动词的要求和限制(1)如like, want, know等不是动作动词,禁止用进行时态。Were liking.Be动词可用于进行时态,即表示一时的表现。Im being serious.我是说正经的。Im not
5、 being hard on anybody.Im being reasonable.只是理智行事。(2)现在进行时可表一个经常性的动作,常表某种情绪。Youre always interrupting me!Hes always interfering in my affairs.Shes constantly changing her mind.区别:It rains a lot here.(说明事实)Its always raining here.(抱怨)She does fine work at school.Shes doing fine work in school.甚至某些静态动
6、词也可用于现在进行时。Im forgetting that I promised to visit him tonight.(三)一般过去时1.基本用法(1)常用来表示过去某一时间所发生的动作。(2)表示在过去一段时间内经常发生的动作或存在的状态。2.基本结构(1)主+be动词(was/were)+名(代/介词短语)(2)主+动词的过去式+宾(3)动词的过去时变化(略)和含过去时句子的肯定、否定、疑问变化。did, didnt, Did.?e.g.Where were you at that time?I was sorry to hear that.Who left the door ope
7、n?What did you major in?Did you go home yesterday? Yes, I did. No, I didnt.I didnt go home yesterday.3.过去时的句子常带有标志性的时间状语.yesterday, at that time.ago, last year, week, just now etc.4.Ago(1)多用于过去时。(2)它所指时间是从现在算起。It was 20 years ago when Jack was a boy of fifteen.5.Before(1)多用于过去完成时(2)它所指时间是从过去某一时刻算起(可
8、与previously换用)。Last summer, I finally left the firm that I had joined 18 years before.(四)过去进行时1.基本用法表在过去某个时间某事正在进行,过去时间可由一时间状语表示,时间状语并非总是跟着。2.基本结构Be(was/were)+doing.What were you doing when I called you?3.过去进行时/一般过去时(1)过去进行时表示一个正在进行尚未完成的动作。They were building a bridge there.(未必建成)过去时表示一个业已完成的动作。They
9、built a bridge there.(2)但有些动词本身并不表示动作完成,如rain,snow,wear,feel等,这时两种时态都可以,在意思上差别不大。It rained all day yesterday.Its raining all day yesterday.4.过去进行时与现在进行时一样,与forever、frequently连用时表厌恶等情绪。He was always making mistakes.I was wondering if you could give me a lift.5.主从句中过去进行时的体现(1)While后跟从句时,从句中须是延续性动词,但wh
10、en之后的动词则短暂性动词或延续性动词都可以。(2)过去时中的两个动作,习惯上一个用一般过去时,另一个用过去进行时。动用较长用过去进行时,动作较短用一般过去时,两个动作可能同时开始,但不同时结束。When someone knocked at the door, I was having supper.When I was attending the class, he upset the cup.(3)由于分工的不同,两个动作的起始和结束时间几乎相同时,均用过去进行时。When I was listening to the radio, my sister was dancing.My mo
11、ther was cooking while I was doing my homework.(4)两个动作在同时段进行,先发生的动作用过去进行时,后发生的动作用一般过去时。两个动作在时间上一先一后。The telephone rang when I was opening the door.我正开门时电话铃响了。When the telephone was ringing, I opened the door.电话正响时我开了门。6.切记瞬间动词没有进行时态两个动作同时发生,延续性动词用进行时态,瞬间动词使用过去时。(五)现在完成时1.基本用法(1)在过去不确定时间里发生的并与现在有着某种联
12、系的动作,体现的是影响或结果。(2)动作开始于过去并持续到现在的动作。(现在完成进行时)。2.基本结构主+have(has)+动词的过分注意其肯定、否定、疑问变化,动词的过去分词变化规律(略)。3.现在完成时的时间状语Already,yet,just,recently,so far,for,since,up to now,in the past 2 years.Ive worked in the company for 2 years.(1)如果完成时句子中后跟(for+一般时间)时,其谓语动词须是持续性动词;但如若后面未跟一段时间则可以用短暂性动词;如果完成句是否定句且谓语是短暂性动词,则后
13、可跟一段时间。Theyve come to visit us from time to time.(2)相关动词的相应转换borrowkeep(have)come backbe backHe died 5 years ago.He has been dead for 5 years.He left his hometown many years agoHe has been away for many years.4.相关难点(1)have gone(to)have been(to)(2)完成时与since(从句)一般since从句中用的都是短暂性动词的过去时。He has been ill
14、since I saw him last.(3)如若since从句中用的是持续性动词(静态动词)的过去时,则含义不同,其表示从句动作的完成或结束。The house has been in bad repair since he lived in it.The house has been in bad repair since he moved out.I havent eaten snails since I was a student at Indiana University.I havent eaten snails since I left Indiana University.(
15、4)如若since从句中的动作或状态延续到说话时间,通常要用持续性动词或表状态动词的现在完成时。He has written to me frequenthy since I was ill.自从病愈以来He has written to me frequenthy since I have been ill.自从我生病以来I havent seen you since Ive been back.I havent seen you since I was back.(5)区别The house has been in bad repair since he lived in it.The h
16、ouse has been in bad repair since he has lived in it.He has stayed here for 3 hours.He stayed here (since) 3 hours ago.He has stayed here since 3 Oclock.(6)在表示“第次做某事”时常使用现在完成时。Its the 1st good meal Ive had for ages.Its the 3rd time this has happened.Itll be the 1st time Ive spoken in public.(7)如果It之
17、后的be动词用的是was,则that分句中通常用过去完成时。It was the 1st time he hadnt worked on Saturday.It was the 1st time shed been at a summer school and she thoroughly enjoyed it.(六)现在完成进行时1.基本用法从过去某时起一直持续的动作,一般是为了强调动作正在进行或反复。I have been washing all morning.Hes been watching television all day.2.基本结构现在完成时S+have(has)+动词过去
18、分词(现在完成进行时)+S+have(has)+been+动词ing,其否定,疑问变化。3.特点(1)其多与how long或long、all一起用。All night long this has been going on.How long have you been reading that book?(2)有时表示的是动作的反复而非一直在持续。Weve all along been making mistakes like this.Has it been causing problems?(3)现在完成时常常倾向动作业已完成。现在完成进行时大多都表示动作还在进行或反复。She has
19、painted her room.She has been painting her room.(可能还未漆完)Ive read a book.Ive been reading a book.(4)有些静态动词只能用于现在完成时,一般不用于现在完成进行时。Ive known him for many years.Theyve been married for 50 years.This has lasted for a long time.(5)在强调动作持续时间的长度时,特别是有long、how long这类状语时,常用现在完成进行时。(七)过去完成时1.概念(1)表示过去某时之前业已发生的
20、动作,发生在前面的用过去完成时,发生在后面的用一般过去时。(2)在过去某时之前,动作已经完成或结束。(3)造成的是对过去的影响或结果,与现在没有关系。(4)过去完成时一般都有过去时相衬托。2.基本结构S+had+动词的过分(P.P.)When I got to the station the train had left.I had been at the bus stop for over one hour when a bus finally came.I had wanted to attend the meeting, but I fell ill.(未完成)3.难点(1)当几个动作用
21、and, then, but等连词时,因为有动作先后顺序,须用一般过去时。He stood up, took his coat and went out.(2)如果有after, before, as soon as等连用,且清楚有动作先后,从句一般用过去时或过去完成时。I told them the news after you (had) left.As soon as I (had) put the phone down it rang again.They had already sold it when I asked the price of that car.(3)注意固定搭配h
22、ardly.when., no sooner.than, scarcely.when etc.He had hardly arrived when it began to snow.Wed scarcely arrived when she started crying.(4)用于hope, intend, mean, think等词的过去完成时,表示未实现的愿望。We had thought to return early but they wouldnt let us go.(5)用于expect, hope, want, think等词的过去时,表示“比”。It was easier t
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