牛津译林版英语8B-Unit1-Past-and-Present-Grammar课件(共26张PPT)

8BUnit1PastandPresent

Grammar

EnglishTeaching-groupofGradeEightLearningaims:1.Masterthestructureandbasicusageofpresentperfecttense(PPT).（掌握现在完成时的基本结构、用法。）2.Learntherulesofformingthepastparticipleofverbs.（学习动词的过去分词变化规则。）3.LearnsometimeexpressionsusuallyusedinPPT.（学习常用在现在完成时里的时间表达方式。）HowlonghasMr.ChenlivedinSunshineTown?2.Whathasthegovernmentdonetopartofthetowncenter?3.WhydoesMr.Chenthinkitisimpossibletoseehisoldfriendsasoftenasbefore?Step1:Lead-inAskandanswerHehaslivedtheresincehewasborn.Thegovernmenthasturnedpartofthetowncenterintoanewpark.Becausehisfriendshavemovedaway.Pre–task:LearnontheirownandanswerWhendoweusepresentperfecttense?Weusethepresentperfecttense

totalkaboutanactionthatstartedinthepastandcontinuestothepresent.表示过去开始，现在还在继续的动作。

Weusethepresentperfecttensetotalkaboutanactionthathappenedinthepastandhasaconnectionwiththepresent.表示过去发生的或已完成的动作对现在造成的影响或结果。PastpresentEddiehaseaten

myfood.EddieatethefoodandnowHobohasnothingtoeat.Wealsousethepresentperfecttensetotalkabouthowmanytimesanactionhashappenedtillnow.谈论动作已经发生了很多次。Ihavealreadyreadthisbookmanytimes.Weusethesimplepasttense

totalkaboutwhathappenedatadefinitetimeinthepast.（一般过去时谈论在过去的特定时间发生的事）Step3:While–taskTask1:GroupworkMakeaconclusionaboutthebasicstructureofPPTSubject(主语)have/has+(not)（助动词）pastparticiple(过去分词)I/You/We/Theyhave(not)moved.He/She/Ithas(not)moved.Have/Has+主语+动词的过去分词HaveI/you/we/theymoved?

Has

he/she/itYes，I/you/we/they

have.he/she/it

has.

No，I/you/we/they

have.not/haven’t.he/she/it

hasnot/hasn’t.

一般疑问句Adverbsoftimealready:肯定句，表示已经发生ever:疑问句，表示“曾经”for:肯定句/疑问句/否定句，表示一段时间just:肯定句，表示“刚刚”never:否定句，表示“从不”recently:肯定句/否定句/疑问句，表示“最近”since:肯定句/否定句/疑问句，表示“自以后”yet:疑问句/否定句，表示“已经”或者“还没有”

Exercises

1.I________(have)lunchalready.2.Hasthetrain_______(arrive),yet?3.Tome____never_______(beto)China.4.Thetwin______just_____(see)myfather.5.Thetwins____(see)myfatherjustnow.havehadarrivedhasbeentohasseensaw

1Haveyoudoneyourhomework_____?(for,just,yet)2Ihave______beentoChengdu.(for,never,yet)3Hehasworkedthere_____heleftschool.(already,just,since)4ShehasknownSam______nineyears.(for,never,since)5Haveyou_______riddenahorse?(ever,for,yet)yetneversinceforever6Theyhave_____arrived.(ever,just,yet)7Hehas_______washedthedishes(already,ever)8Wehavenotcompletedtheproject____.(already,for,yet)justyetalready

FormingthepastparticipleofverbsMostverbs+edwash→washedVerbsendingine+dlive→livedVerbsendinginaconsonant+y-y+iedstudy→studiedShortverbsendinginavowel+aconsonantdoubletheconsonant+edstop→stoppedStep3:While–taskTask2:Learntherulesmovelivelovelike写出下列动词的过去式和过去分词:visitrepairwatchfinishvisitedvisited

repairedrepairedwatchedwatchedfinishedfinishedmovedmovedlivedlived

lovedloved

likedliked

verb＋ed以e结尾＋d写出下列动词的过去式和过去分词:stopmoptrapplanstoppedstopped

moppedmoppedtrappedtrappedplannedplanned注:以一个辅音字母结尾的重读闭音节词,双写最后一个辅音字母＋ed双写＋edstudyhurrystudiedstudiedhurriedhurried去y＋ied注:以辅音字母加y结尾的词,去y＋ied.写出下列动词的过去式和过去分词:begiveseemakeputcomewritewas/werebeengavegivensawseenmademadeputputcamecomewrotewritten注:不规则动词见书上122页不规则动词表.Somemoreexamples:mostverbsIrregularverbsInfinitivePastparticleInfinitivePastparticlevisitvisitedcomecomelivelivedseeseenrepairrepairedbebeenfinishfinishedgivegivenmovemovedwritewrittenwatchwatchedmakemadetraveltravelledputput1borrow2hope3make4get5plan6cry7send8watch9say10grow11hit12enjoy1borrow2hope3make4get5plan6cryborrowedhopedmadegotplannedcriedsentwatchedsaidgrewhitenjoyedStep3:While–taskTask3:FinishPartAonpage141They__________(finish)theirhomeworkalready.2John_____never_____(visit)China.3Mr.Li__________(repair)overtenbicyclessinceMonday.4We___________(notsee)eachotherforyears.5Myparents__________(notcome)backyet.6.Ourteacher__________(teach)usalotaboutthehistoryofChina.havefinishedhasvisitedhasrepairedhaven’tseenhastaughthaven’tcomeStep3:While–taskTask4:FinishPartBonpage14Task5:FinishPartConpage15M:________you________(see)anyfilmsrecently,Sandy?S:No,Ihaven’t.Whataboutyou?M:Well,I________(see)onelastSaturday.S:Whatisitabout?M:It’saboutthechangesinBeijingoverthepastcentury.Fromthisfilm,I________(learn)moreaboutBeijing’spastandpresent.S:Oh,IthinkI________(hear)aboutthefilm.Doyouplantoseeitagain?M:Yes,I’dliketo.Haveseensawhaveheardhavelearnt1She__________(wait)fortwohoursalready.

2They_______________(notfinish)theprojectyet.3_____you______(hear)frommysisterrecently?4Mark_________(be)therefortwodays.5_____theyever_____(stay)athomealone?6I_____never________(watch)thisfilm.7Daniel______just_________(arrive)home.8We_____________(noteat)anythingsincethen.haswaitedhaven’tfinishedHave

heardhasbeenHavestayed

watchedhavehasarrivedhaven’teatenTask6:Fillintheblanks用括号中动词的适当形式填空He

(wait)foranhour.

I

(notfinish)theworkyet.

you

(know)himsincethen?I

(hear)frommyfatherrecently.We

(be)theremanytimesinthepast3years.They

(finish)theworksofar.6.Howlong