英语人教版八年级下册Unit-8--现在完成时

Unit8HaveyoureadTreasureIslandyet?现在完成时态presentperfectGrammarFocusHaveyoureadLittleWomenyet?Yes,Ihave./No,Ihaven't.HasTinareadTreasureIslandyet?Yes,shehas.Shethinksit'sfantastic.Haveyoudecidedwhichbooktowriteaboutyet?Yes,Ihave.I'vealreadyfinishedreadingit.Itwasreallygood.现在完成时：表示过去发生或已经完成的某一动作对现在造成的影响或结果，或从过去开始一直延续到现在的动作或保存的状态。结构：主语+have/has+动词的过去分词一般疑问句：have/has…?Yes,Ihave.No,Ihaven’t.Yes,shehas.No,shehasn’t.1.现在完成时动词构成have/has+v过去分词助动词否定haven’thasn’t疑问Haveyou…?Hashe…?常与下列时间状语连用：just,already,yet,ever,never,before,severaltimes肯定句:1.Hehaseatensupper.2.Theyhavefinishedtheirhomework.•否定句:1.Hehasn'teatensupper.2.Theyhaven'tfinishedtheirhomework.一般疑问句及肯定否定回答:1.Hasheeatensupper?Yes,hehas./No,hehasn't2.Havetheyfinishedtheirhomework?Yes,theyhave./No,theyhaven't.现在完成时1.过去发生的动作对现在造成的影响或结果。和already,never,ever,just,before,yet等状语连用。havebreakfastIhavejusthadmybreakfast.(现在我不饿)I’mnothungrynownowpastalready和yet都可以作为现在完成时的标志词，你能发现他们用法的不同吗？发现规律：1.Wehavealreadycleanedupourclassroom.2.IhavealreadyreadTreasureIsland.3.Haveyoureadthebookyet?4.Thebushasn’tcomeyet.◆already一般用于肯定句中◆yet一般用于疑问句和否定句中Practice:alreadyoryet?1.Ihave_________finishedreadingit.2.Haveyoudecidedwhichbooktowriteabout_________?3.Ihaven'tseenthefilm________.alreadyyetyete.g.1.Haveyou_____beentoJapan?2.Hehas_____finishedhishomework.3.Wehavecleanedourroom_____.4.Ihaven’thadbreakfast____.5.Theyhavereadthestory_______.6.Shehas_______boughtthedictionaryeverjustalreadyyet观察：1.just,already,yet,before/ever,never在句中的位置。2.有此类副词时,常强调动作完成,不强调动作的持续.beforenever3.现在完成时与一般过去时的区别：A.Ihavecleanedmyroom.(Myroomiscleannow.)Icleanedmyroomlastweek.(Ididitinthepast.)B.Theyhaveboughtadictionary.(Theyboughtadictionaryandtheyhaveitnow.)Theyboughtadictionaryaweekago.小结：现在完成时把过去的动作和现在的结果联系起来，一般过去时只限于表示过去的动作本身,与现在的结果无关1.I________(join)thebookclublastmonthandI____________(read)fivebooksalready.2.Ionly_________(start)takingFrenchclasseslastweekandI____________(learn)50Frenchwordsalready.practice:joinedhavereadstartedhavelearnt3.Tony______(buy)apopmusicCDyesterdaybuthe_____________(listen)toityet.4.They___________(listen)tomanysongsbyTheBeatles,buttheycannotsinganyofthem.5.She_________(see)thenewspaperonthetablethismorning,butshe______________(have)anytimetoreadityet.boughthasn’tlistenedhavelistenedsawhasn’thad注意:现在完成时不能和明确指出时间的状语(如:yesterday,last,year,in1976,twodaysago,justnow,whenshecamein等)连用，但可以和不明确指出时间的状语(如:already,yet,ever,never,sometimes,always,often,before,once,twice,recently,lately等)连用；也可以和表示包括现在在内的时间状语(如：today,thismorning,thisweek,thisyear等)连用。现在完成时2.过去已经开始，持续到现在的动作或状态，常与for或since引起的一段时间状语连用。movedherein2004Istilllivehere1）Ihavelivedhereforthreeyears.2）Ihavelivedheresince2004/threeyearsago.nowpast3)HehasstudiedEnglishsincelastyear.4)ShehasworkedinBeijingforfiveyears.(1).for+表示一段时间的短语(2).since+表示过去时间点的词语(3).since+表示过去时间的时间状语从句eg.Ihavebeenateacher______ayear.Hehasbeenatthisschool_______1992.Wehavelearned1,000Englishwords_______wecametothisschool.forsincesince现在完成时句中常见的时间状语A.表示从过去一直持续到现在,不能是具体的过去时间。B.注意:come,go,leave,arrive,buy,lose,receive,join,die,bury和marry等动词所表示的动作是一时的,不能延续的,故不能与for…,since…等开头的表示一段时间的状语连用。不过,这些词用于否定句则可以与表示持续的时间状语连用，即动作的不发生是可以持续的。不能说:*HehascometoBeijingfortwoyears.*Hehasboughtthatbookforthreeweeks.*HehasjoinedtheArmyforoneandahalfyears.*Hisgrandmahasdiedforninemonths.*Ihavereceivedhisletterforamonth.可以说:HehasbeeninBeijingfortwoyears.Hehashadthatbookforthreeweeks.Hehasbeeninthearmyforoneandahalfyears.Hisgrandmahasbeendeadforninemonths.Ihaven'treceivedhisletterforalmostamonth.1.A:Wouldyoulikesomethingtodrink?B:No,thanks._______________________(just/drinksometea)2.A:Iheardyoulostyourkey.__________________?(find)B:No,notyet.3.A:DoyouknowwhenTomisleaving?B:___________________.(already/leave)4a.Usethewordsinbracketstocompletetheconversations.I’vejustdrunksometeaHaveyoufounditHehasalreadyleftA:When_________________?(leave)B:Thismorning.4.A:Isyoursistergoingtothemovieswithustonight?B:No._________________________.(already/seethefilm)5.A:Whatdoyourparentsthinkaboutourplan?B:I____________________.(not/tellthem/yet)didheleaveShehasalreadyseenthefilmhavenottoldthemyetSally_______(love)reading.Inthemorning,shereadsthenewspaperandintheeveningshereadsbooks.She_____already______(read)morethan100differentbooks!Herfavoritekindofbooksissciencefiction.Sheisinterestedinscienceandtechnologyandlovestoimagine4b.Fillintheblankswiththecorrectformsofthewordsinbrackets.loveshasreadwhattheworld_______(be)likein50years.She__________(finish)readingabookaboutrobotslastweekand_____________(write)abookreportaboutitnextweekforherFrenchclass.Everytimesheisinthelibrary,Sallylooksatthemanybooksshe_____________(notread)yetandshecan’twaittoreadthem!willbefinishedwillwritehasnotread改写句子1.Myfathercamebackfromthebookshopjustnow.Myfather______just______________thebookshop.2.HebegantolearnChinesein2001.He____________Chinesesince2001.3.Thefilmbegantwominutesago.Thefilm_________________sincetwominutesago.4.Hehashadthemotorbikefortwoyears.It’stwoyears______he________themotorbike.He________themotorbiketwoyears______.T