动词时态语态.ppt
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1、动词时态语态动词时态动词时态 初中知识回顾初中知识回顾 回顾一:一般现在时的用法回顾一:一般现在时的用法 一般现在时可以表示现在经常性或习惯性的动作,一般现在时可以表示现在经常性或习惯性的动作,情况或状态,还可表示客观真理,科学事实,格情况或状态,还可表示客观真理,科学事实,格言以及不受时间限制的客观存在。常与言以及不受时间限制的客观存在。常与often,usually,sometimes,seldom,every day 等时等时间状语连用。间状语连用。He sings well.The earth turns around the sun.Everyone thinks I come fr
2、om Sichuan.Actually,I come from Shandong.在时间和条件状语从句中通常用一般现在时表示在时间和条件状语从句中通常用一般现在时表示将来的动作。将来的动作。If it rains tomorrow,I will not go there.We had better accept his offer before he changes his mind.回顾二:一般过去时的用法 1)一般过去时表示过去发生的动作,情况,状态等,有时会带有确定的表过去的时间状语。She watched a movie last night.A big fire destroyed
3、the whole building last year.2)表示过去经常或反复发生的动作。When I was a boy,I often went to play in that park.回顾三:一般将来时的用法 1)一般将来时表示单纯的将来事实,由will+动词原形构成,如果是第一人称,也可以用“shall+动词原形”用“be going to+动词原形”表示打算和预测。This terms will be over.The summer vacation is coming in two weeks.My sister will finish her middle school th
4、is year.We will play basketball every day next month.2)祈使句+and/or+一般将来时 Work hard and you will pass the exam.另外几种表示将来的形式 1)be going to do 表示打算和预测 Who is going to speak at first?Look at the clouds.Its going to rain.2)be to do 表示计划注定要发生的事情或命令,禁止,可能性 You are to clean the windows.3)be about to do 表示即将发生
5、的动作。不能再接时间状语。He was about to leave the classroom when I came in.回顾四:现在进行时 1)现在进行时可以表示说话时正在发生的动作,常和now,right now,at this moment 等时间状语连用。还可表示目前一段时间内一直在发生的动作,但是说话时不一定发生,常和these days,this week,at present 等时间状语连用。2)现在进行时可以表示将要发生的动作,不过这种用法只限于 visit,arrive,begin,come,drive,fly,get to,go,leave,see off,take
6、off等动词-where is Li Hua?-Look!He is playing tennis on the playground.How are you getting to the airport?What are you doing these days?2)进行时态常与always,forever,continually,constantly等连用,表示反复出现或习惯性动作,含有赞扬,批评,讨厌,不满等情绪。Some people are constantly complaining that they have too much work to do.Bill is always
7、 leaving his things about.回顾五:过去进行时的用法回顾五:过去进行时的用法 Was/were+doing 表示过去某一时刻或某一阶表示过去某一时刻或某一阶段正在发生的动作。时间点可以用介词短语,副段正在发生的动作。时间点可以用介词短语,副词或从句来表示。词或从句来表示。He was reading a novel the whole morning yesterday.When I saw him he was decorating his room.My brother came back home while I was doing homework.-Do yo
8、u still remember the first time we met?-Of course.You were organizing an English evening party.回顾六:现在完成时回顾六:现在完成时 has/have+done 1)现在完成时表示过去发生的某一动作对现在造现在完成时表示过去发生的某一动作对现在造成的影响和结果,或者表示过去已经开始,持续成的影响和结果,或者表示过去已经开始,持续到现在的动作和状态。常和到现在的动作和状态。常和already,yet,just,ever,never,recently,lately,so far,before She lo
9、st her books.(强调是过去丢的动作,与强调是过去丢的动作,与现在无关。现在无关。She has lost her books.(表示到目前为止还没表示到目前为止还没有找到)有找到)I havent finished my homework yet.I have never seen him before.Has she ever been abroad?2)for+一段时间/since+点时间/从句(一般用过去时)常与现在完成时连用 I have lived here since 1990.I have lived here for 13 years=I have lived he
10、re since 13 years ago=it is 13 years since I began to live here.I havent seen him for three years=I havent seen him since three years ago=it is 3 years since I saw him last time.Mr Wang has worked in the factory since he came to the city.3)it is/was the first/second time that has/have done/had done
11、It is the first time that I have visited the city.It was the third time that the boy had been late.4)this is the.that(最高级修饰与完成时连用)最高级修饰与完成时连用)This was the best film that I had ever seen.This is the largest fish I have ever seen.5)in/for/during/over/within+the last/past+一一段时间段时间 The house has changed
12、 hands three times in the last two years.Over the last few years,prices have fallen sharply.I have seen little of her in the past few weeks.Within the past few minutes,the president has issued a statement.6)非延续性动词(如)非延续性动词(如 begin,start,finish,end,go,come,leave,arrive,join die 等)的现在完等)的现在完成时不可和成时不可和
13、since,for 等表示一段时间的状语连等表示一段时间的状语连用用 He has joined the army for three years(F)He has been in the army for three years.(T)比较一般过去时与现在完成时比较一般过去时与现在完成时 1).一般过去时只表示发生在过去的动作或存一般过去时只表示发生在过去的动作或存在的状态在的状态,不涉及对现在的影响不涉及对现在的影响;现在完成;现在完成时表示发生在过去的动作或状态时表示发生在过去的动作或状态一直延续到一直延续到现在现在,或强调过去的事情对现在的造成的影响或强调过去的事情对现在的造成的影响。
14、My family lived in Zhuhai ten years ago.(现在不在了(现在不在了)My family have lived in Zhuhai for 10 years.(目前还在珠海目前还在珠海)2).过去时常过去时常与具体的表示过去的时间状语连用与具体的表示过去的时间状语连用,而现在完成时通常与而现在完成时通常与不确定的不确定的或或包括现在在内包括现在在内的时间状语连用,或无时间状语的时间状语连用,或无时间状语.I studied in Zhongshan university in 2000.(2000年表示具体的过去时间)年表示具体的过去时间)I have st
15、udied in Zhongshan university since 2000.(since 2000表示从表示从2000年至今年至今,包包括现在在内括现在在内)I have just bought an apartment.(just表示不表示不确定的时间状语)确定的时间状语)回顾七:过去完成时回顾七:过去完成时 1)表示在过去某一时刻或某一动作之前已经完成表示在过去某一时刻或某一动作之前已经完成的动作。的动作。When Jack arrived,he learned Mary had been away for almost an hour.The girl sitting next t
16、o me on the plane was very nervous,for she hadnt flown before.By the end of last month we had already finished half of the work.He had stayed here for two days before he left.2)hope,expect,mean,intend,suppose,want,think 等动词的过去完成时,可表示过去等动词的过去完成时,可表示过去未曾实现的希望,打算或意图未曾实现的希望,打算或意图 I had hoped to see you.
17、He had wanted to buy a house in Beijing.3)在在hardly when,scarcely.when,no sooner.than 表示一表示一.就就 They had hardly been seated when the bus started.No sooner had I finished the work than the light went out.4)by the time+现在现在-将来完成时将来完成时 by the time+过去过去-过去完成时过去完成时 By the time I graduate next year,I will
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