高中英语各种时态讲义全(共8页).doc
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1、精选优质文档-倾情为你奉上一、一般现在时的用法1) 经常性或习惯性的动作,常与表示频度的时间状语连用。 时间状语: every, sometimes,at, on Sunday I leave home for school at 7 every morning. 2) 客观真理,客观存在,科学事实。 The earth moves around the sun.3) 表示格言或警句中。 Pride goes before a fall.骄者必败。注意:此用法如果出现在宾语从句中,即使主句是过去时,从句谓语也要用一般现在时。例如: Columbus proved that the earth
2、is round.4) 现在时刻的状态、能力、性格、个性。Ann Wang writes good English but does not speak well.比较:Now I put the sugar in the cup. I am doing my homework now. 第一句用一般现在时,用于操作演示或指导说明的示范性动作,表示言行的瞬间动作。再如:Now watch me, I switch on the current and stand back. 第二句中的now是进行时的标志,表示正在进行的动作的客观状况。知识扩展:一般现在时表将来1)下列动词:come, go,
3、 arrive, leave, start, begin, return的一般现在时表将来。这主要用来表示在时间上已确定或安排好的事情。 The train leaves at six tomorrow morning.2)倒装句,表示动作正在进行,如: Here comes the bus. = The bus is coming.3)在时间或条件句中。 When Bill comes (不是will come), ask him to wait for me.4)在动词hope, take care that, make sure that等后。 I hope they have a ni
4、ce time next week.二、一般过去时的用法1)在确定的过去时间里所发生的动作或存在的状态。 时间状语有:yesterday, last week, an hour ago, the other day, in 1982等。 I saw Tom in the street yesterday. 2)表示在过去一段时间内,经常性或习惯性的动作。 When I was a child, I often played football in the street.3)用过去时表示现在,表示语气委婉礼貌。 (1)动词want, hope, wonder, think, intend 等。例
5、如: Did you want anything else? I wondered if you could help me. (2)情态动词 could, would,例如:Could you lend me your bike?4)用在条件句中表示与现在或将来事实不符的虚拟语气。 If he were here now, we could turn to him for help.注意比较下列句型: It is time for sb. to do sth “到时间了;该了”,例如: It is time for you to go to bed.你该睡觉了。 It is time sb.
6、 did sth. “时间已迟了;早该了”,例如: It is time you went to bed.你早该睡觉了。 would (had) rather sb. did sth.表示“宁愿某人做某事”,例如: Id rather you came tomorrow.一般过去时表示的动作或状态都已成为过去,现已不复存在。Christine was an invalid all her life.(含义:她已不在人间。)Christine has been an invalid all her life.(含义:她现在还活着)Mrs. Darby lived in Kentucky for
7、seven years. (含义:达比太太已不再住在肯塔基州。)Mrs. Darby has lived in Kentucky for seven years. ( 含义:现在还住在肯塔基州,有可能指刚离去)三、一般将来时1) shall用于第一人称,常被will 所代替。will 在陈述句中用于各人称,在征求意见时常用于第二人称。Which paragraph shall I read first?Will you be at home at seven this evening?2) be going to +不定式,表示将来。a. 主语的意图,即将做某事或打算做某事。What are
8、you going to do tomorrow?b. 计划,安排要发生的事。The play is going to be produced next month.c. 有迹象要发生的事Look at the dark clouds; there is going to be a storm.3) be +不定式表将来,按计划或正式安排将发生的事。We are to discuss the report next Saturday.4) be about to +不定式,意为马上做某事。He is about to leave for Beijing.注意:be about to 不能与to
9、morrow, next week 等表示明确将来时的时间状语连用。be going to / will的用法之比较: 用于条件句时,be going to表将来,will表意愿。例如:If you are going to make a journey, youd better get ready for it as soon as possible.Now if you will take off your clothes, we will fit the new clothes on you in front of the mirror.be to和be going to 的用法之比较:
10、be to 表示客观安排或受人指示而做某事。而be going to 则表示主观的打算或计划。例如:I am to play football tomorrow afternoon. (客观安排)Im going to play football tomorrow afternoon. (主观安排) 四、现在进行时1. 表示现在( 指说话人说话时) 正在发生的事情。例如: We are waiting for you.2. 习惯进行:表示长期的或重复性的动作,说话时动作未必正在进行。例如: Mr. Green is writing another novel.(说话时并未在写,只处于写作的状态
11、。) She is learning piano under Mr. Smith.3. 表示渐变的动词有:get, grow, become, turn, run, go, begin等。 The leaves are turning red. Its getting warmer and warmer.4. 与always, constantly, forever 等词连用,表示反复发生的动作或持续存在的状态,往往带有说话人的主观色彩。 You are always changing your mind.知识扩展:不用进行时的动词1) 事实状态的动词。如:have, belong, poss
12、ess, cost, owe, exist, include, contain, matter, weigh, measure, continue I have two brothers. This house belongs to my sister.2) 心理状态的动词。如:know, realize, think see, believe, suppose, imagine, agree, recognize, remember, want, need, forget, prefer, mean, understand, love, hate I need your help. He l
13、oves her very much.3) 瞬间动词。如:accept, receive, complete, finish, give, allow, decide, refuse. I accept your advice.4) 系动词。如:seem, remain, lie, see, hear, smell, feel, taste, You seem a little tired.五、过去进行时1)概念:表示过去某时正在进行的状态或动作。2)过去进行时的主要用法是描述一件事发生的背景;一个长动作发生的时候,另一个短动作发生。3) 常用的时间状语有:this morning, the
14、whole morning, all day yesterday, from nine to ten last evening, when, while 例句: My brother fell while he was riding his bicycle and hurt himself. It was raining when they left the station. 典型例题1) Mary _ a dress when she cut her finger. A. made B. is making C. was making D. makes答案C. 割伤手指是已发生的事情,应用过
15、去时。同时,when表时间的同时性,玛丽在做衣服时提供事情发生的背景,因此用过去进行时。2) As she _ the newspaper, Granny _ asleep. A. read; was fallingB. was reading; fell C. was reading; was fallingD. read; fell答案B.句中的as = when, while,意为当之时。描述一件事发生的背景时,用过去进行;一个长动作发生的时候,另一个短动作发生。句意为 在她看报纸时,奶奶睡着了。句中的 fell (fall的过去时),是系动词,后跟形容词,如:fall sick。 六、
16、现在完成时1现在完成时的用法:(1)现在完成时表示过去发生或已经完成的某一动作对现在造成的影响或结果。通常与表示包括现在在内的时间副词just,already, before, yet, never, ever等状语连用。例如: I have never heard of that before. She has already finished the work. 有时没有时间状语;多是一般疑问句。(2)现在完成时表示过去已经开始,持续到现在,也许还会持续下去的动作或状态。可以和表示从过去某一时刻延续到现在(包括现在在内)的一段时间的状语连用。 如:for和since,以及 so far,
17、now, today, this week(month, year) 等。 I havent seen her these days. She has learnt English for 3 years. They have lived here since 1990. What has happened to the USA in the last 350 years?注意:表示短暂时间动作的词,如come, go, die, marry, buy等的完成时不能与for, since等表示一段时间的短语连用。 3)现在完成时还可以用在时间和条件状语从句中,表示将来某时完成的动作,例如: I
18、ll go to your home when I have finished my homework. (4) have been (to)和have gone (to)的区别: have / has been (to) 表示“曾经去过”某地,说话时此人很可能不在那里,已经回来。侧重指经历。have / has gone (to) 表示某人“已经去了”某地,说话时此人在那里,或可能在路上,反正不在这里。 试比较: He has been to Beijing. 他曾去过北京。 (人已回来,可能在这儿) He has gone to Beijing. 他已经去了北京。 (人已走,不在这儿)。一
19、般过去时与现在完成时之比较 1)过去时表示过去某时发生的动作或单纯叙述过去的事情,强调动作;现在完成时为过去发生的,强调过去的事情对现在的影响,强调的是影响。 2)过去时常与具体的时间状语连用,而现在完成时通常与模糊的时间状语连用,或无时间状语。 一般过去时的时间状语有:yesterday, last week,ago, in1980, in October, just now, 具体的时间状语。 共同的时间状语有:this morning, tonight, this April, now, once,before, already, recently,lately等。 现在完成时的时间状语
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