GrammarandusagePoliceinAmericahavesteppeduptheirsearchforaboywhowentmissing.2.Peoplehaveshowngreatinterestinhisdisappearanceduetosightingsofalienvisits…3.Ihaven’tseenJustinsince.4.SomepeopleinDoveralsosaythatthey

haveseenaliens.5.PeoplehavenotruledoutthepossibilitythatJustinwastakenbyaliens.6.…Peterson,whohastakenchargeofthecase.PresentperfecttenseReview:ThePresentPerfectTense

Form(結構):Summary:have/has+doneFindoutsomesentenceswhichareinthepresentperfecttenseinthetext.MrZhanghasjustboughtanewcar,buthehashadtoublewithmotorists.Whenhereturnshomeatnighthealwaysfindthatsomeonehasparkedacaroutsidehisgate.Becauseofthis,hehasnotbeenabletogethisowncarintothisgarageevenonce.Hehastowalkhomeafterheparkshiscar.“what’sthematter?Haveyouboughtacar?〞“Yes,but…〞MrZhanghasputupa“Noparking〞signoutsidehisgate,butithasnotanyeffect.hasjustboughthashadhasparkedhasnotbeenHaveyouboughthasputup1.Theteacherintheblackjackethasleft

.2.WehavestudiedEnglish.3.KungWeizhenghasalready

finishedthehomework.4.Hehashadhislunch.5.IhaveseenthefilmofTitanictwice.6.Moststudentshavemadegreatprogressinreading.7.MrFenghasjustreturnedfromBritain.Extension1Summary1：表示過去發生的某一動作對現在造成的影響或產生的結果.現在完成時這一時態強調是過去動作與現在的聯系,也就是強調現在的影響和結果.通常與表示包括現在在內的時間副詞just〔剛剛〕,already〔已經〕,before,yet〔一般疑問：已經；否認句：還〕never,ever等狀語連用Drill11.I________(have)lunchalready.2.Hasthetrain_______(arrive),yet?3.Tome____never_______(beto)China.4.Thetwin______just_____(see)myfather.5.Thetwins____(see)myfatherjustnow.havehadarrivedhasbeentohasseensaw1.We＿＿＿＿＿＿(study)Englishforaboutfouryears.2.We＿＿＿＿＿＿(live)inHoujiMiddleSchoolsincethreemonthsago.3.Theoldman_____________〔已經死了〕fortwoyears.5.Justinhasbeenmissingfortwoweeks.6.Ihaven’tseenGuoYithesedays.Extension2havestudiedhavelivedhasbeendeadSummary2：強調某一動作或狀態從過去某一時間開始延續到現在且有可能繼續下去用延續動詞。通常和for,since.sofar,bynow,untilnow,thesedays,inthelasttenyears,引導的時間狀語連用。

Drill21.Theprice_____recently,butIdoubtwhetheritwillremainso.Awentdown,BwillgodownChasgonedownDwasgoingdown2.Inthepastfewyearsthere____greatchangesinDaMiaotown.AisBwereChavebeenDwillbe.Timefriends1.迄今為止：sofar,uptillnow,uptonow,untilnow….2.最近的過去：inthelast/pastyears,recently,lately,thesefewdays….3.表示一段時間的短語：allday,allthisyear,allone’slife瞬間性動詞如arrive,join,die,get,come,buy,sell,leave,borrow,marry等，以及終止性動詞如start,begin,finish等，在現在完成時的肯定形式中不能與“for+一段時間〞的時間狀語連用，但可以用在否認句或這些動詞對應的狀態動詞中。為了表述這種意思，我們常用相應的延續性動詞have,keep,be..等來代替非延續性動詞。Tips:Choosetherightanswers1.Ihavejoined/beeninthearmyfortenyear.2.Hehasbeento/gonetoDalianmanytimes.3.Shehasgotmarried/beenmarriedtoRobertsforayear.4.Allthepreparationsforthetaskarecompleted/havebeencompleted,andwe’rereadytostart.5.Hehasgone/beenawayfortwodays.6.Hehashad/hasboughtthisbookforayear.√√√√√√現在完成時與一般過去時的用法比較現在完成時屬于現在時態范圍，因此，不能和yesterday,lastnight,twoweeksago等表示過去的時間狀語連用。Theplanehasarrived.〔說明現在的情況：飛機在這兒〕Theplanearrivedaquarterago.〔動作發生在過去與現在無關〕Ihavetaughthereforfifteenyears.〔表示十五年前的動作一直延續到現在，還可能會繼續。〕Itaughthereforayear.〔曾在這兒教過，但現在不在這兒任教了〕ComparasionPutthefollowingsentencesintoEnglish.A:火車已經開走了.B:什么時候開走的?A:半個小時之前開走的.A:這本書我已經買了兩年了.B:你在哪兒買的?A:在我老家買的.A:你看過這部電影嗎?B:看過.A:什么時候看的.B:上周星期天看的.A:Thetrainhasleft.B:Whendiditleave.A:Itlefthalfanhourago.A:haveyouseenthefilm?B:Yes,Ihave.A:Whendidyouseeit?B:IsawitlastSunday.A:I`vehadthebookfor2years.B:Wheredidyoubuyit?A:Iboughtitinmyhometown.CorrectthemistakesHisfatherhasdied.(for2years)Thefootballmatchhasbegun.(since9:00a.m)Thetwinshavejoinedthearmy.(sincetheyare18yearsold)Myteacherhasjust

leftNanjing.(for3days)Hisfatherhasbeendeadfor2years.Thefootballmatchhasbeenonsince9:00a.m.Thetwinshavebeensoldiers/beeninthearmysincetheyare18yearsold.

MyteacherhasbeenawayfromNanjingfor3daysMakesomesentencesusingthepresentperfecttense.

Competitiontranslation:不累啊？你已跳了三個小時啦！Aren’tyoutired？Youhavebeenjumpingforthreehours.

她肯定累了，因為她一天一直在跳舞Shemustbetired,forshehasbeendancingallday.ThePresentPerfectContinuousTense

PartB:Form:have/has+been+doingI_______________________(sleep)sincesveraldaysago

haven’tbeensleepingConnectionwiththepast:

Connectionwiththepresent:Icouldn’tsleepseveraldaysago.

Iamnotsleepingwellnow.Analysis(分析)

意義：過去某時開始一直延續至今的動作，可能還要繼續進行表示動作從過去某一時刻開始，一直延續到現在，現在這個動作可能剛剛終止，也可能仍然在進行著。Nowthatsheisoutofajob,Lucy______goingbacktoschool,butshehasn’tdecidedyet.A.hadconsideredB.hasbeenconsideringC.consideredD.isgoingtoconsiderReview鏈接高考1.Wherehaveyoubeen?We_____foryoueverywhere.A.lookB.werelookingC.havebeenlookingD.hadbeenlooked2.IwonderwhyJenny______usrecently.Weshouldhaveheardfromherbynow.A.hasn’twrittenB.doesn’twrite