英语现在完成时ppt

PresentPerfectTense初中现在完成时1.He______________(play)soccerontheplaygroundnow.2.He______________(play)soccerontheplaygroundyesterday.3.He______________(play)soccerontheplaygroundwhenIsawhimyesterday.4.He______________(play)soccerontheplaygroundeveryday.5.He______________(play)soccerontheplaygroundtomorrowafternoon.6.He______________(play)soccerontheplaygroundforalongtime.定义结构标志词非延续性动词的转换Have的动词词组如何区分定义※现在完成时表示过去发生或已经完成的动作对现在造成的影响或结果Someonehasturnedoffthelight.※表示发生在过去某一时刻的动作,持续到现在.Ihavelivedthereforfiveyears现在完成时的基本句型：※肯定句：主语+助动词have/has+动词的过去分词…※否定句:主语+助动词have/has+not+动词的过去分词….※一般疑问句：助动词Have/Has+主语+动词的过去分词…?肯定回答：Yes,主语+have/has否定回答：No，主语+have/hasnot※特殊疑问句：疑问词+助动词Have/Has+主语+动词的过去分词…?实义动词的过去分词：规则变化（和过去式一样）。4、重读闭音节动词,双写词尾辅音字母,再加—ed,如：stop—stopped1、一般情况下,动词词尾加-ed,如：work—workedplay—playedwant—wantedask—asked2、以不发音的-e结尾动词,动词词尾加-d,如：live—livedmove—movedtaste—tasted.3、以“辅音字母+y”结尾的动词,把y改成i,加—ed,如：study—studiedtry—triedcarry—carried不规则变化：am/is-was-beendo-did-doneride-rode-riddencome-came-cometake-took-takenrun-ran–runbegin-began-begunsee-saw-seen标志词already，yet,never,ever,before,justuptonow,sofar,forthelastfewweekssincefor2.just表示刚刚，置于助动词之后和实意动词之前，常用于肯定句。Ihavejustfinishedmyhomework.1.already表示已经，置于助动词之后和实意动词之前，常用于肯定句；Hehasalreadylefthere.他已经离开这里了。4.before,表示“之前，以前”，常置于句末,不受句型限制Ihaveseenthismoivebefore.3.yet在现在完成时中的用法否定句:句末“还(没)”Ihaven’thadbreakfastyet.疑问句:句末“已经”Haveyouhadbreakfastyet?5、never表示“从来没有“，置于助动词之后和实意动词之前，常用于肯定句表示否定WehaveneverbeentotheGreatWall.我们从来没有去过长城。6、ever表示“曾经”置于助动词之后和实意动词之前，用于疑问句，HaveyoueverbeentoCanada?你们曾经去过加拿大吗？8.in/duringthelast/past+时间段，in/duringthelastfiveyears,thiscityhaschangedalot7.uptonow=sofar,迄今为止，到目前为止，Ihavedonesomuchworkssofar.9.for+时间段Maryhasbeenillforthreedays.Since+时间点since+一段时间+agoIhavelivedheresince1998.Ihavelivedheresincetenyearsago.Itis+时段+since从句（过去时）等于Ithasbeen+时间段+since从句Exercise1.-Haveyoutravelledonthetrain?-Yes,Ihave.(A)never(B)ever(C)just(D)yet2.-HaveyoulearnedEnglish?-Yes,I'velearnedalot.(A)never,ever(B)ever,never(C)ever,already(D)already.everBCForsince3.OurteacherhasstudiedJapanese___threeyears.4.Shehasbeenawayfromthecity___abouttenyears.5.It’sabouttenyears__sheleftthecity.sinceforfor非延续性动词转换成延续性※非延续性动词：动作一经发生即告结束，不与一段时间连用※延续性：动作发生后还可以持续一段时间，可以与一段时间连用现在完成时表示的是过去的一个动作一直持续到现在，如果与一段时间连用时，谓语动词必须是延续性动词，或者就是非延续性动词转换成延续性动词come—behere;go—bethere;close—beclosed;open—beopen;buy—have;borrow—keep;leave—beaway;begin—beon;finish—beover;die—bedeadetc.1.HegottoBeijingfiveyearsago.He﹍﹍﹍Beijingforfiveyears.2.Mariaborrowedthisbookthreedaysago.Maria﹍﹍﹍thisbookforthreedays3.Theshopclosedtwohoursago.Theshop﹍﹍﹍fortwohours.hasbeeninhaskepthasbeenclosedhavebeento/havegoneto/havebeeninhavebeento意思是“到过，去过”，去了已回havegoneto意思是“去了”，去了未回havebeenin意思是“待在某地”归期未知上一页下一页主菜单用Havebeento,havegoneto,havebeenin填空1.Mikeandhisparentshave___thenorthforhalfayear,andtheirhomeisstillempty.2.Ihave__________Beijingmanytimes.3.Mr.BrownhasShanghaiforthreedays.下一页上一页主菜单beentobeeningoneto