2019-2020年牛津译林版高一英语必修二教学设计：Unit1 Tales of the unexplained-Grammar and usage 2

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1、2019-2020年牛津译林版高一英语必修二教学设计：Unit1Talesoftheunexplained-Grammarandusage2单　　元：Unit1Talesoftheunexplained板　　块：GrammarTeachingaims:Learnthedifferencesbetweenthepresentperfecttenseandthepresentperfectcontinuoustense.Teachingimportantpoints:1.Learnhowtoformandusethepresentperfecttense.2.Understandwhenthep

2、resentperfectcontinuoustenseisusedinsentences.Teachingmethods:Explainingandpracticing.Teachingaids:themulti-media.Teachingprocedures:Step1parethetwotenses1.Weusethepresentperfecttensetotalkaboutanactionpletedintherecentpast,andthepresentperfectcontinuoustenseforanactionthatstartedinthepastandisstil

3、lhappening.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调动作仍在继续。LiJiahasreadabookaboutStonehenge.（表示她已经读完了。)LiJiahasbeenreadingabookaboutStonehenge.(表示她仍在读。)2.Wecanusethepresentperfecttenseforrepeatedactions,andthepresentperfectcontinuoustensefornon-stopactions.Weusuallyusethepresentperfectt

4、ensetoaskquestionsbeginningwithhowmany/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。—HowmanytimeshaveyouvisitedEgyptthismonth?—IhavevisitedEgypttwicethismonth.—HowlonghaveyoubeentouringEgypt?—Ihavebe

5、entouringEgyptfortwomonths.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。Ihavehadthiscameraforfiveyears.(had是表示“拥有”状态的动词)IhavetakenphotosofUFOswiththiscamera.

6、(taken是表示动作的动词)IhavebeentakingphotosofUFOswiththiscamera.(taking是表示动作的动词)4.Weusethepresentperfecttense,notthepresentperfectcontinuoustense,withthewordslikenever,yet,alreadyandever.现在完成时的句子中可以用像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)Ihavealreadybeent

7、oAmerica.(F)IhaveneverbeenvisitingAmericaStep2Practice1.PartA:Readtheconversationandcircletherightwordstopleteit.Answers:(1)heard(2)beendoing(3)beenresearching(4)beendoing(5)started(6)done(7)read(8)found(9)