八下unit1 现在完成时 语法 .ppt

《八下unit1 现在完成时 语法 .ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Presentperfecttense现在完成时态1Hehashadbreakfast.YouhavestudiedhereforabouttwoyearsWhendidyouhavebreakfast?WhendidyoustudyinQingtanMiddleSchool?Discussion:WhendoweusePresentPerfectTense?ThePresentPerfectTense(现在完成时）一.现在完成时的含义1.表示过去已完成的动作对现在产生的影响，常与“already”、“yet

2、”、“just”等连用；e.g.Hehasalreadyhadbreakfast.(现在饱了)2.也可表示过去发生的动作持续到现在，常与“since”自从、“for”等连用。e.g.IhavelivedheresinceIwasborn.3.表示一个过去的动作直到现在发生的次数e.g.Ihavealreadyreadthisbookthreetimes.二、现在完成时的构成WehavelivedinBeijingsincewewereborn.Hehasalreadyhadhislunch.Ihavejust

3、finishedmyhomework.2现在完成时的否定句1现在完成时的肯定句句型主语（第一、二人称单/复数）+have主语（第三人称复数）+have+过去分词主语（第三人称单数）+has句型主语+have/hasnot(haven't/hasn't)+过去分词Ihavenotseenthemovieyet.Hehasn’tbeentoBeijingsincethen.Shehasn’teatenit.Theyhaven’tfinishedthework.3现在完成时的一般疑问句Have/Has+主语+过去分

4、词+….Haveyoufinishedthework?Hasshearrivedhere?Havetheyeatensupper?4现在完成时的特殊疑问句特殊疑问词+have/has+主语+过去分词+…….HowmanytimeshaveyoubeentotheGreatWall?Howlonghaveyouknowneachother?Whathaveyoufinishedrecently?Yes,…have/has.No,…haven’t/hasn’t.Yes,Ihave./No,Ihaven’t.Yes

5、,shehas./No,shehasn’t.Yes,theyhave./No,theyhaven’t.三、过去分词的构成原形过去分词原形过去分词tryvisitmovestopstaychangeownshoplearnrepairtriedmovedstayedownedlearnedvisitedstoppedchangedshoppedrepairedA规则动词的过去分词B不规则动词的过去分词（书P122）原形过去分词原形过去分词thinkputcatchcostgivegrowmakehurtwrit

6、erunthoughtcaughtgivenmadewrittenputcostgrownhurtrun原形过去分词原形过去分词feelbringfallwearflysinghaveforgetdrinkkeepfeltfallenflownhaddrunkbroughtwornsungforgottenkeptAshorttestborrow__________hope__________make__________get__________plan__________cry__________send_

7、_________watch__________say__________grow__________hit__________enjoy__________borrowedhopedmadegotplannedcriedsentwatchedsaidgrownhitenjoyedHespeaksFrenchsofluently.HelearneditinParis.Hewastherefortwoyears.HehasstudiedFrench.(他学过法语。)这句话所强调的结果是他现在懂法语。Look!T

8、heblackboardissocleannow.Hehascleanedtheblackboard.(他已经擦过黑板了。)这句话所表示强调的结果是黑板现在是干净的。用法1：表示过去开始的动作或状态已经结束，但是对现在有影响这种用法常与already,just,yet,ever,never,times(次数)等连用.I___________(do)myhomeworkalready.He______