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时间:2018-12-15
《高中英语 unit1 tales of the unexplained grammar and usage教学设计2 牛津译林版必修2》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、单 元:Unit1Talesoftheunexplained板 块:Grammarandusage2Thoughtsonthedesign:Learnthedifferencesbetweenthepresentperfecttenseandthepresentperfectcontinuoustense.Teachingobjectives:1.Learnhowtoformandusethepresentperfecttense.2.Understandwhenthepresentperfectcontinuoustenseis
2、usedinsentences.Teachingprocedures:Step1Comparethetwotenses1.Weusethepresentperfecttensetotalkaboutanactioncompletedintherecentpast,andthepresentperfectcontinuoustenseforanactionthatstartedinthepastandisstillhappening.现在完成时和现在完成进行时都表示动作从过去开始,但现在完成时可表示事件或动作刚结束,而现在完成进行时则强
3、调动作仍在继续。1)LiJiahasreadabookaboutStonehenge.(表示她已经读完了。)2)LiJiahasbeenreadingabookaboutStonehenge.(表示她仍在读。)2.Wecanusethepresentperfecttenseforrepeatedactions,andthepresentperfectcontinuoustensefornon-stopactions.Weusuallyusethepresentperfecttensetoaskquestionsbeginningwit
4、hhowmany/much,andthepresentperfectcontinuoustensetoaskquestionsbeginningwithhowlong.现在完成时可表示反复发生的动作,提问时用howmany/howmuch。而现在完成进行时则表示持续的、不间断的动作,提问时用howlong。1)—HowmanytimeshaveyouvisitedEgyptthismonth?你这个月去了埃及几次?—IhavevisitedEgypttwicethismonth.我这个月去了埃及两次。2)—Howlonghaveyou
5、beentouringEgypt?你在埃及旅游多久了?—IhavebeentouringEgyptfortwomonths.我已经在埃及旅游两个月了。3.Wecanuseeitherastateverboranactionverbwiththepresentperfecttensebutweusuallycanonlyuseanactionverbwiththepresentperfectcontinuoustense.现在完成时可以用表示状态的动词或表示动作的动词做谓语。而现在完成进行时则只能用表示动作的动词做谓语。1)Ihaveh
6、adthiscameraforfiveyears.(had是表示“拥有”状态的动词)2)IhavetakenphotosofUFOswiththiscamera.(taken是表示动作的动词)3)IhavebeentakingphotosofUFOswiththiscamera.(taking是表示动作的动词)4.Weusethepresentperfecttense,notthepresentperfectcontinuoustense,withthewordslikenever,yet,alreadyandever.现在完成时的句
7、子中可以用像never、yet、already和ever这样的词,而现在完成进行时的句子中则不可以用这样的词。Exercise:(T)IhavenevervisitedAmerica.(T)IhavealreadybeentoAmerica.(F)IhaveneverbeenvisitingAmericaStep2Practice1.PartA:Readtheconversationandcircletherightwordstocompleteit.Answers:(1)heard(2)beendoing(3)beenresearc
8、hing(4)beendoing(5)started(6)done(7)read(8)found(9)started(10)beendoing(11)beenmaking2.Trytoanswerthefollowing
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