初中现在完成时态课件.ppt

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1、现在完成时ThePresentPerfectTense一构成:have/has+动词过去分词(pp)肯定主语+have/has+pp否定主语+have/hasnot+pp疑问Have/Has+主语+pp+其他Yes,主+have/has.No,主+haven’t/hasn’t.Ihavefinishedmyhomework.Ihavenotfinishedmyhomework.Haveyoufinishedyourhomework?Yes,Ihave./No,Ihaven’t.ShehasbeentoEurope.Shehasn’tbeentoEurope.

2、HasshebeentoEurope?Yes,shehas./No,shehasn’t.1.规则动词：与过去时变化相同。(1)一般+-edwork---worked---worked(2)以“e”结尾,+-d。live---lived---lived(3)“辅音字母+y”结尾，y变i,+-ed。cry---cried---cried(4)重读闭音节结尾(辅元辅)，双写后+-ed。drop---dropped--dropped2、不规则动词，见不规则表（p120）动词过去分词(pp)变化规则二含义及用法1表示过去发生的动作或事情，对现在的影响和产生的结果。常用

3、的关键词yet(否/疑),already已经ever/never曾经/从来不just刚刚before以前recently,lately最近in/duringthepast/last5years过去五年bynow,sofar,uptonow,tillnow迄今once,twice…一次…all/inone’slife某人一生（1）already肯定句:“己经”I’vealreadyhadbreakfast.(更常见)=I’vehadbreakfastalready.(2)表示一个从过去开始，一直持续到现在的动作或状态。注:有already的句子在时态上并不都是现在

4、完成时,判断时要看该词后是否有动词的过去分词.Eg.She’salreadyeightyyearsold.Itwasalreadyverylate.(2)yet否定句:句末“还(没)”疑问句:句末“己经”Haveyouhadbreakfastyet?Ihaven’thadbreakfastyet.注意：当在肯定句中含already或just，变否定时，在句末加yet。Ihaven’tseenthefilmyet.●Motherhasjustcleanedthehouse.Motherhasn’tcleanedthehouseyet.●Ihavealready

5、seenthefilm.(3)never否定句:句中“从来没有”I’veneverbeentoBeijing.注:带ever的肯定句变否定句时,将ever变neverHehasevermademeal.Hehasnevermademeal.(4)just用于句中,表示“刚刚”I’vejusthadbreakfast.Whathavetheyjustdone?A:______yourbrother_________anewwatch?(buy)B:Notyet.KeywordsHasboughtyetA:_______youever_______tothepar

6、k?(be)B:Yes,Ihave.KeywordsHavebeenyeteverI______never______anythinglikethat.(see)KeywordshaveseenyeteverneverTom___________inthefactorysinceheleftschooltenyearsago.(work)KeywordshasworkedyeteverneversinceI______just________thedesk,youcantakeittoyourclassroom.(mend)Keywordshavemendedy

7、eteverneversincejustHe____already______ajob.(find)Keywordshasfoundyeteverneversincejustalreadysince+(过去的)时间点或一般过去时Ihavebeenheresince2000.Hehasworkedasalawyersince5yearsago.They’velivedinCQsincetheymarriedin2000.have/hasgoneto(去了未回来)have/hasbeento(去了已回来)have/hasbeenin(去了呆在某地)Exercises

8、Tom在哪儿？他去书店买