牛津英语8B-Unit1-Grammar现在完成时课件ppt

1、8BUnit1PastandpresentThePresentPerfectTense现在完成时Grammar•Hehaslivedtheresincehewasborn.•Thegovernmenthasturnedpartofthetowncentreintoanewpark.•Becausemostofhisoldfriendshavemovedaway.ThePresentPerfectTense现在完成时Iwrotesomewordsontheblackboardjustnow.Therearesomewordsontheblackboardnow.Ihavewrittensomewordsontheblackboardalready.(现在完成时)1.表示过去发生的动作对现在造成的影响或结果。wrotesomewordsontheBbThewordsareontheBbNowPastIhavebeenateachersinceIleftmycollege(大学).Ibecameateacher.Iamstillateacher.NowPastFuture2.表示过去已经开。

2、始，持续到现在或将来的动作或状态。Ihavebeenateacherfor12years.3.表示某事直到现在发生了多少次.IhavewatchedtheTVshowmanytimes.IhavewrittensomewordsontheBbalready.现在完成时结构：IhavebeenateachersinceIleftmycollege(大学).Discussion:Whatnewstructurecanyoufindinthesesentences?Ihavebeenateacherfor12years.IhavewatchedtheTVshowmanytimes.—————————————————————————__________________v过去分词have/has+Wemakenegativestatementsinthepresentperfecttenselikethis:I/You/We/Theyopenedthedoor.He/She/Ithavenot=haven’thasnot=hasn’thavehasnotLet’spractisenotchang。

3、ealotthestudentsThestudentshaven’tchangedalot.Weaskandanswerquestionsusingthepresentperfecttenselikethis:I/you/we/theyopenedthedoor?he/she/itI/you/we/theyhe/she/itI/you/we/theyhe/she/itHaveHasYes,No,have.has.haven’t.hasn’t.carrytheheavyboxescarriedtheheavyboxesA:Havethey…?B:Yes,theyhave./No,theyhaven’t.Let’spractisestopataxistoppedataxiA:Hasshe…?B:Yes,shehas./No,shehasn’t.Let’spractise1.Hehasopenedthedoor.2.Thestudentshaven’tchangedalot.3.Havetheycarriedtheheavyboxes?4.Hasshestoppedataxi?过去分词（P.。

4、P.）Mostverbsopen→openedVerbsendingin-echange→changedVerbsendinginaconsonant+ycarry→carriedShortverbsendinginavowel+aconsonantstop→stopped+ed+d-y+ieddoubletheconsonant+edNochangecome→comehurt→hurtChangethevowelhold→heldwin→wonChangetheconsonantlend→lentbuild→builtChangethevowel(s)andtheconsonant(s)catch→caughtkeep→keptforget→forgottentell→toldOthersbe→beenhave→hadfall→fallenfly→flowndraw→drawnsee→seen见课本第122.123页。Thefollowingshowsmoreexamplesofthepastparticiplesofsomeverbs.visitrepairlivemovetrys。

5、tudyfitplanvisitedrepairedlivedmovedtriedstudiedfittedplannedhitputmeetmakesellgivewritethinkhitputmetmadesoldgivenwrittenthoughtLetmetestyourmemory!livefinishtryplanhitmeetputcatchstop(p14)1.They______________(finish)theirhomeworkalready.2.John_______never_______(visit)China.3.MrLi______________(repair)overtenbicyclessinceMonday.4.We________________(notsee)eachotherforyears.5.Myparents______________(notcome)backyet.6.Ourteacher_____________(teach)usalotaboutthehistoryofChinarecently(最近，进来).have。

6、finishedhasvisitedhasrepairedhaven’tseenhaven’tcomehastaughtCompletethesentences1.Hehas_________visitedmanyplacesinChina.2.Thetrainhasn’tarrived_________.3.Hasshearrived_________?4.Hasn’thecomeback_________?上一页下一页Tips★already是“已经”之意，用在________中。yet用在_______________中，在否定句中有“还”之意。alreadyyetyetyet肯定句疑问句和否定句for:+_________forayear,fortwoweeks,forthreeyears...Since+________________,sincelastweek,since2008…____________,since9yearsago,since3daysago…,___________________________：sinceyoucame，sincehemovedh。

7、ere,sinceIwasborn…Tips一段时间过去的某一时刻一段时间+ago一般过去时态的时间状语从句Let’try!用since或for填空：1.Ihavebeenatthisschool____________morethantwoyears.2.Shehasworkedinthefactory___________tenyearsago.3.Mr.Greenhaslivedinthecity____________hewasborn.4.Hisfatherhasbeenapartymember___________twentyyears.5.ShehaslearnedEnglish________1999.forforsincesincesinceKeywordsyeteverneversinceforjustalreadyrecentlyHave123451.I’vealreadyhaddinner.(否)I_____________dinner_____.2.Tomˊsneverbeenlateforschool﹐___________.(反意疑问句)haven’tha。

8、dyet1.将下列句子改为否定句或疑问句。hasheIntervieweachotherlikethis:A:Whathaveyoudonetoday?B:Ihave___________today.2.Tobeareporter!•Whyishesohappy?•Becausehehas_________.3.Aguessinggame4.Chattime(p14):Millie:(1)_____you______(see)anyfilmsrecently,Sandy?Sandy:No,Ihaven’t.Whataboutyou?Millie:I(2)________(see)onelastSaturday.Sandy:What’sitabout?Millie:It’saboutthechangesinBeijingoverthepastcentury.Fromthefilm,I(3)______________(learn)moreaboutBeijing’spastandpresent.Sandy:Oh,IthinkI(4)__________(hear)aboutthefilm。

9、.DoyouplantoseeitagainMillie:Yes,I’dliketoHaveseensawhavelearnthaveheardGroupworkTalkaboutthechangesinourlives.EnvironmentTransportLivingconditionsCommunicationwaysInthepast…,butnow…,becauseIhavehad…1.InthepastIcouldsee…/hear…However,…hasbecome…overtheyears.2.Myparentsusedtogotoschool…,butnow,Igotoschool….,because…3.Iusedtolivein…butnowIlivein…because…现在完成时的构成现在完成时的主要用法现在完成时的时间状语过去分词的构成Task6:Conclusion现在完成时Homework1.Reviewthesummaryonpresentperfecttense.2.Finishtheexercisesontheworkbook.Classbeg。

10、an45minutesagoClasshasbeenonfor45minutes.。