人教版八年级下英语Unit8_Section A Grammar Focus-4c)共34张PPT.ppt
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1、Unit8HaveyoureadTreasureIslandyet?,GrammarFocus-4c,1.你读过小妇人吗?不,我没有。HaveyoureadLittleWomenyet?No,Ihavent.2.Tina读过金银岛吗?是的,她读过。HasTinareadTreasureIslandyet?Yes,shehas.3.我已经读完了金银岛。IhavealreadyfinishedreadingTreasureIsland.4.至少你已经读过书的结尾,了解了它的大致内容吧。Haveyouatleastreadthebackofthebooktoseewhatitsabout?5.我带回
2、了许多我可以用的东西。IvebroughtbackmanythingsIcanuse.6.虽然我失去了所有,但没有丧生。AlthoughIhavelosteverything,Ihavenotlostmylife.7.我已经砍到了树木并建造了一所房子。Ihavealreadycutdowntreesandbuiltahouse.,Translatethefollowingsentences:,Grammarfocus,Translatethefollowingconversations.,你读了小妇人了吗?是的,我读了。/不,还没有。HaveyoureadLittleWomenyet?Yes,
3、Ihave./No,Ihavent.,蒂娜读了金银岛了吗?是的,她读了。她认为这本书太棒了。HasTinareadTreasureIslandyet?Yes,shehas.Shethinksitsfantastic.,你决定写哪本书了吗?是的,决定了。我已经看完了。书真的很好。Haveyoudecidedwhichbooktowriteaboutyet?Yes,Ihave.Ivealreadyfinishedreadingit.Itwasreallygood.,LanguagePoints,现在完成时定义,现在完成时定义三要素:1.表示到现在为止已经完成或刚刚完成的动作。2.一件发生在过去的事
4、情对现在产生影响。3.一个动作开始于过去,并持续到现在(也许还将持续下去)。,现在完成时的构成现在完成时由“助动词have/has+动词的过去分词”构成。,现在完成时,IstartedlearningEnglishin2012.IamlearningEnglishthesedays.IhavelearnedEnglishfor8years.,(一般过去时),(现在进行时),(现在完成时),现在完成时结构,肯定句:主语+have/has+过去分词+.,否定句:主语+havent(havenot)+过去分词主语+hasnt(hasnot)+过去分词.,疑问句:Have/Has+主语+过去分词.?,
5、Ihaventfinishedmyhomework.,Haveyoufinishedyourhomework?,Ihavefinishedmyhomework.,根据括号内的要求完成下列各题。1.Tomhasalreadyfinishedhishomework.(改为否定句)Tomhasntfinishedhishomeworkyet.2.Theyhaveansweredmyletters.(改为一般疑问句并作肯定回答).Havetheyansweredyourletters?Yes,theyhave.,【运用】,现在完成时的用法,1)表示到现在为止已经完成或刚刚完成的动作。,Bynow,Ih
6、avecollectedallthedataIneed.Nowwehaveplantedallthetrees.,2)表示过去发生的动作,强调结果或对现在的影响。,Someonehasbrokenthewindow.Ihavejustcleanedmyhands.,(窗户现在是坏的),(手是干净的),3)表示从过去开始并持续到现在的动作或状态。,ShehaslearnedEnglishfor5years.HehaslivedinBeijingsincehewasborn.,过去分词的规则、不规则变化,(1)一般动词,在词尾直接加“ed”。work-worked-worked(2)以“e”结尾的
7、动词,只在词尾加“d”。live-lived-lived,规则变化,(3)以“辅音字母+y”结尾的动词,将“y”变为“i”,再加“ed”。study-studied-studied(4)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”。drop-dropped-dropped,不规则变化,A.过去分词与过去式形式一样(ABB型)havehadhadspendspentspentmakemademadesaysaidsaidfindfoundfoundhearheardheardmeetmetmetleaveleftleft,B.过去分词与过去式形式不一样(ABC型)take
8、tooktakenspeakspokespokensingsangsungdrivedrovedrivenbewas/werebeengowentgone,C.过去分词、过去式与动词原形一样(AAA型)cutcutcutputputputletletletreadreadreadcostcost-costhurthurthurtsetsetsetshutshut-shutD.过去分词与动词原形一样(ABA型)comecamecomebecomebecame-become,现在完成时常见标志词,标志词,already/yet,ever/never,just/before/uptonow/inth
9、epastyears/sofar,already一般用于肯定句;yet用于否定句和疑问句。,多用于否定句和疑问句中,意为“曾经”;“从未”。,Tomhasalreadyfinishedhishomework.Tomhasntfinishedhishomeworkyet.,Haveyouevereatenfish?Ihavenevereatenfish.,Ihavejusthadmylunch.Shehasntseenyoubefore.,例句,Practice,Choosethebestanswer.,1.Bothhisparentslooksad.Maybethey_whatshappene
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