教案英语教案：unit1-tales of the unexplained-grammar and usage（牛津译林版必修2）.doc

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1、●    GrammarandUsagePresentperfecttense1.Usedifferentmethodstopresentthepresentperfecttense.Herearesomeideas:1)Pleaselookatthescreen.Payattentiontothedifferentformsoftheverbs:  2)Let’scompletethefollowingsentences,inwhichthepredicatepartismissing.   We_____(study)Englishforaboutfi

2、veyears.       They_____(live)inthesouthsincetheirdaughterwasborn.       I_______(read)yourarticlethreetimes.It'swellwritten.        Thestudent________(finish)herhomeworkalready.         Eric__________(go)backtohishometowntoday.          Answers:havestudied   havelived   haveread 

3、  hasfinished   hasgone3)Readthefollowingsentencesandpointoutwhattenseortensesareusedinthemandthereasonswhytheyareused.   WehavestudiedEnglishforaboutfiveyears.Webegantostudyitfiveyearsago.   Theymovedtothesouthin1990andhavelivedtheresincethen.Thestudentisdoingherhomework.Shehasn'

4、tfinishedityet.Ericlefthomelastyearandhasjustcomeback.2.Wemaywonderwhysomeverbscan'tbeusedinthepresentperfecttense.Let’sreadthefollowingsentences,andtrytofinddifferentusagesofsomeverbs.Justinhasbeenawayfromhomeforseveraldays.HedisappearedlastFriday.Theyboughtthishousethreeyearsago

5、andtheyhavelivedheresincethen.Mybrotherwenttoseemygrandpalastweek.Hehasvisitedhimthreetimesthismonth.Soyouseewhenanactionhappensoveraperiodoftimethatbeganinthepastandcontinuestothepresent,thepresentperfecttenseisoftenused.Whenanactionhappenedatadefinitetimeinthepast,thepastsimplet

6、enseisoftenused.3.ReadPoints1and2onpage8tomakesurewhythepresentperfecttenseisusedinthesetwosentences.              4.GooverPoint3onpage8tolearnwhattimeexpressionscanbeusedwiththepresentperfecttense.Payattentiontothedifferentusagesbetweenalreadyandyet,orforandsince.5.ReadPoint4onpa

7、ge8tolearnthatthepresentperfecttensecanbeusedinasituationwheretheactionwascompletedonlyamomentago.Inthiscase,justisused.6.GooverPoints5and6onpage8andnotethatwhenwewanttoexpressarepeatedaction,weusethepresentperfecttensewiththetimeexpressionsonce/twice/threetimes...7.Let’sreadthedi

8、aryentryandthencompleteitusingthe