Period4Grammar(主備人：唐克海；審核人：黃芳艷)Teachingaims:1.Revisethesimplepresenttense,thepresentcontinuoustense,thesimplepasttense,thepastcontinuoustenseandthepresentperfecttense.2.Sumupthedifferencesbetweenthesimplepasttenseandthepresentperfecttense.Teachingprocedures:Step1RevisionTranslatethefollowingsentencesandtellwhattenseisusedineachsentence.1.他總是設法獨自做每一件事。Healwaysmanagestodoeverythingbyhimself.(時態：一般現在時)2.宇航員們目前為下一次飛行做準備。Theastronautsarepreparingforthenextflightatpresent.(時態：現在進行時)3.在返回地球的途中，宇宙飛船開始旋轉，失去了控制。OntheirwaybacktotheEarth,thespacecraftbeganspinningoutofcontrol.(時態：一般過去時)4.那一刻，全世界都在等待著向他們問候。Atthatmoment,thewholeworldwaswaitingtogreetthem.(時態：過去進行時)5.在太空中，阿姆斯特朗接到縮短航程的命令。Inspace,Armstrongreceivedtheordertocuttheflightshort.(時態：一般過去時)6.因為他的出色表現，迄今他已經被授予了五個獎項。Becauseofhisexcellentservice,hehasbeenpresentedfiveawardssofar.(時態：現在完成時)Step2Simplepresenttenseandpresentcontinuous1.SimplepresentUsedfor:1.apresentstate .JohnlivesinNewYork.2.dailyroutineandhabits .Ialwaysgotobedat140.3.presentactionsthathappenoneafteranother .Schoolisoverandthestudentsgohome.4.actionssetbyatimetableorschedule .Thetalkshowstartsat7.2.PresentcontinuousUsedfor:1.actionsthathappenrightnow .Look!Thereporterisinterviewingtheastronaut.2.actionsthathappenatthesametime.MumisdoingthehouseworkandDadisworkingonthecomputer.3.actionsinalimitedperiodoftime .Iamworkingonahistoryprojectthisweek.4.arrangementsforthenearfuture .IamleavingforShanghaitonight.時態用法特征詞一般現在時1.經常性、習慣性的動作或存在的狀態。2.表示事先安排好的事情。always,often,usually,sometimes,seldom,never,everyday…現在進行時1.表示現在或現階段正在發生的動作。2.表示事先安排好的即將發生的動作。atthemoment,today,now,rightnow,Listen!Look!.Ioftengotoschoolat7a.m.HeiswatchingTV.Ilikecollectingstamps.Thismonth,theyarepreparingfortheexam.Step3Simplepasttenseandpastcontinuous1.SimplepastUsedfor:1.Actionsthathappenedinthepast. .Simonplayedfootballyesterday.2.Actionsthathappenedoneafteranotherinthepast..Simoncamehome,turnedonthecomputerandcheckedhisemail.2.PastcontinuousUsedfor:1.actionsthatwereinprogressatacertaintimeinthepast.Yesterdayat4.,Simonwasplayingfootball.2.actionsthathappenedatthesametimeinthepast.SimonwasplayingcomputergameswhileMilliewaswatchingTV.3.actionsthatlastedforsometimeinthepast.Wewerehavingameetingfrom9a.m.to11a.m.yesterday.時態用法常用特征詞一般過去時1.過去發生或過去經常發生的動作。2.過去存在的狀態。yesterday,twoyearsago,lastweek,theotherday,in1999過去進行時1.表示過去某個時刻正在發生的動作2.過去同一時間里同時發生的兩個動作。3.過去一個時間段內持續發生的動作。atthistimeyesterday,from…to…,lastnight….Twomonthsago,IflewtoLondonwithmymother.Shewasreadingwhilehermotherwastalkingonthephone.Shewasshoppingat10a.m.yesterday.Step4Simplepastandpresentperfect1.SimplepastUsedfor:1.actionsthathappenedinthepast .Iboughtanewbicycleyesterday.2.actionsthathappenedatacertaintimeinthepast.KittywroteanemailtoLindaanhourago.2.PresentperfectUsedfor:1.emphasizingtheresultofapastaction.Ihaveboughtanewbicycle,soIcanridetoschoolnow.2.tellinghowmanytimesanactionhashappenedtillnow .ShehasbeentotheUSAtwice.時態用法注意一般過去時只強調過去的動作或狀態，不與現在發生聯系時態狀語是過去的，yesterday,in1998等。現在完成時1.強調過去發生的動作對現在產生的結果或影響。2.強調過去發生的動作一直持續到現在。3.強調過去某動作到現在已經發生多少次。1.already,yet,ever,just,recently…2.在肯定句中與“since+過去點時間、for+段時間”連用時，謂語動詞必須是延續性動詞。3.Durativeandnon-durativeverbs.IlivedinSunshineHehaslivedinSunshin