八年级下册初中英语《Grammar Present perfect tense》公开课课件牛津译林版-八年级英语课件

GrammarPresentperfecttense现在完成时的基本定义：

1、过去发生的动作对现在造成的影响。

2、过去的动作或状态持续到现在并且可能继续下去。

结构：1、肯定句：have/has+p.p(过去分词）2、否定句：have/has+not+p.p(过去分词）3、一般疑问句：Have/has提到句首肯定回答：Yes,主语+have/has.否定回答：No,主语+haven’t/hasn’t.规则动词：1.一般直接加-ed:work-worked-workedvisit-visited-visited2.以e结尾的直接加dlive-lived-livedmove-moved-moved3.以辅音字母加y结尾，把”y”改为“i”后加ed.study-studied-studiedcry-cried-cried4、重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加“

ed

”stop-stopped-stoppeddrop-dropped-dropped动词的不规则变化：AAA:read-read-readcut-cut-cutABB:have/has-had-hadleave-left-leftABA:run-ran-runbecome-became-become

ABC:go-went-gonedrink-drank-drunkring-rang-rung练习：写出以下动词的过去式和过去分词play-study-go-start-stop-run-carry-have-played-playedstudied-studiedwent-gonestarted-startedstopped-stoppedran-runcarried-carriedhad-had现在完成时长与一些时间状语连用：1.常与just,already,before,yet,ever,never等词连用I____already_____(finish)myhomework.havefinishedShe_______never_______(be)toGuilin.hasbeenI_____________(notdo)myworkyet.haven’t

done2.常与for，since，inthepast…years,sofar,overtheyears,recently等词连用：.Myfather___________(teach)Englishfor10years.hastaughtInthepastfewyears,I__________(be)tomanyplaces.havebeenMyfamily___________(live)heresince

Iwasborn.havelivedalready与yet的区别:现在完成时中,already和yet都可以表示“已经”的意思.

already用于肯定句,放在句中或句尾.

e.g：I’vealreadybeentheretwice.

=I’vebeentheretwicealready.

yet用于否定句或疑问句中,放在句尾.

e.g：Ihaven'tfinishedreadingthebookyet.

Havethechildrencomebackhomeyet?

for与since的用法区别for+时间段.since+时间点+ago.since+时间点.since+从句.用for或since填空:___threeyears____lastyear___twohours____twoweeks____Iwasfive____1999forsinceforforsincesinceB.Mr.Wuasksthetocompletethesentencesbelowusingthepresentperfecttense.Helpthemcompletethesentences.

1.They________(finish)theirhomeworkalready.2.John_____never_____(visit)China.3.Mr.Li_________(repair)overtenbicyclessinceMonday.4.We________(notsee)eachotherforyears.5.Myparents_________(notcome)backyet.6.Ourteacher_________(teach)usalotaboutThehistoryofChina.havefinishedhasvisitedhasrepairedhasn’tseenhaven’tcomehastaughtChattime

c.MillieandSandyaretalkingaboutafilmaboutthehistoryofBeijing.Completetheirconversationwiththecorrectformsoftheverbsinbrackets.(1)_____you_____(see)anyfilmsrecently,Sandy?No,Ihaven’t.Whataboutyou?I(2)________(see)onelastSaturday.What’sitabout?ItaboutthechangesinBeijingoverthepastcentury.Fromthisfilm,I(3)__________(learn)moreaboutBeijng’spastandpresent.Oh,IthinkI(4)________(hear)aboutthefilm.Doyouplantoseeitagain?Yes,I’dliketo.Haveseensawhavelearnthave

heard练习巩固：A.写出下列词过去分词1borrow________5plan_______9say______2hope_______6cry______10grow______3make_______7send__