语法：现在完成时.ppt

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1、Welcome to our class-现在完成时态语法练习课语法练习课时态不同时间发生的动作，动词要用不同形式已已学习过的时态学习过的时态名称名称时间时间 动词形式动词形式一般现在时一般现在时平时，经常平时，经常现在进行时现在进行时正在进行正在进行一般将来时一般将来时即将，计划即将，计划 1.will/shall+v原形原形2.am/is/are going to+v原形原形一般过去时一般过去时过去（与现过去（与现在无关）在无关）1.v-ed（规则动词）规则动词）2.不规则动词不规则动词过去进行时过去进行时过去某一时过去某一时间，在进行间，在进行was/were+v-ing1.v原形原形

2、2.v三单三单am/is/are+v-ing1.will/shall+v原形原形2.am/is/are going to+v原形原形1.v-ed（规则动词）规则动词）2.不规则动词不规则动词was/were+v-ing判断下列句子的时态判断下列句子的时态1.She works in a factory.2.I was doing my homework at this time yesterday.3.We are going to have a picnic this Sunday.4.They held a sports meeting last week.5.Are you helpin

3、g your mother.一般现在时一般现在时过去进行时过去进行时一般将来时一般将来时一般过去时一般过去时现在进行时现在进行时现在完成时现在完成时1.1.过去发生的动作对现在造成的影响或结果。过去发生的动作对现在造成的影响或结果。2.2.过去已经开始，持续到现在的动作或状态过去已经开始，持续到现在的动作或状态动词构成：动词构成：have/has+v过去分词过去分词had breakfastI have just had my breakfast.(现在我不饿现在我不饿)Im not hungry nowmoved herein 2000I still live hereI have live

4、d here for three years.I have lived here since 2000/three years ago.now 现在完成时动词构成现在完成时动词构成:have/has+v 过去分词过去分词 助动词助动词否定否定haventhasnt疑问疑问Have you?Has he?动词的过去分词形式动词的过去分词形式1.规则动词规则动词2.不规则动词不规则动词finish-finished-finishedlive-lived-livedcarry-carried-carriedstopstopped-stoppedEg.gowentgonesee-sawseenforg

5、etforgot-forgottenI,finish,homeworkI havent finished my homework.Have you finished your homework?Yes,I have./No,I havent.I have finished my homework.1.1.她成为一名护士已经三年了。她成为一名护士已经三年了。2.2.我五年前就认识李雷了。我五年前就认识李雷了。3.3.那些相片我已经寄给他了。（那些相片我已经寄给他了。（postpost）4.4.我来到这个学校后，他就一直教我。我来到这个学校后，他就一直教我。5.5.我刚丢了我的历史书。我刚丢了我的

6、历史书。She has been a nurse for three years.I have known Lilei since five years ago.I have already posted the photos to him.He has taught me since I came to the school.I have just lost my history book.(1).for+表示表示一段一段时间的短语时间的短语 (2).since+表示表示过去时间点过去时间点的词语的词语 (3).since+表示过去时间的时间状语表示过去时间的时间状语从句从句eg.I hav

7、e been a teacher _ a year.He has been at this school _ 1992.We have learned 1,000 English words _ we came to this school.forsincesince B.just,already,yet,before/ever,never 有此类副词时有此类副词时,常强调动作完成常强调动作完成,不强调动作的持续不强调动作的持续.eg.Have you _been to Japan?I have _ finished my homework.I have finished my homewor

8、k _.I havent finished my homework _.everjustalreadyyet1.现在完成时句中常见的时间现在完成时句中常见的时间A.表示从过去一直持续到现在表示从过去一直持续到现在,不能是具不能是具体过去时间体过去时间2.区分区分短暂性动词短暂性动词与与持续性动词持续性动词.表示短暂性表示短暂性(瞬间性瞬间性)的动词在现在完成时的动词在现在完成时的句中的句中不能不能和和一段时间一段时间连用连用.即即for,since短语或短语或how long问句问句come/arrivego out leavebeginbuyborrowjoindiecatch a cold

9、be at/in be outbe away(from)be onhavekeepbe a member ofbe deadhave a cold改错改错:How long have you become a league member？For more than one year.Have you arrived here since last night.Yes，youre right.The dog has died for a month.He has gone to Shanghai twice.How long have been at this school?Since two years.beenbeenbeen deadbeen ago.For Thank you Bye-bye!