Unit 3 Online Tours课件4.ppt

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1、Unit3OnlineToursGrammarSimplepasttenseandPresentperfecttenseAskandansweraboutsomethingincludingSimplepasttenseandPresentperfecttense.1.HaveyoueverbeentoBeijing?2.WhendidyougotoBeijing?3.HowmanytimeshaveyoubeentoBeijing?4.Haveyoueverboughtacomputer?5.Whenandwheredidyoubuyit?6.Howmanyt

2、imeshaveyouuseditforanonlinetour?WorkouttheruleTherearesomedifferencesbetweentheSimplepasttenseandthePresentperfecttense.WeusetheSimplepasttensetotellwhathappenedinthepast.DanielwenttoBeijingtwoyearsago.Danielboughtanewcomputerlastmonth.MrWuvisitedCanadain2010and2011.WeusethePresentp

3、erfecttensetotalkaboutanactionthatstartedinthepastandcontinuestothepresent.DanielhasbeentoBeijingfortwoyears.WeusethePresentperfecttensetotalkabouttheresultofanaction.Whentheactionhappenedisnotveryimportant.Itmayhavejusthappenedorhappenedsometimeago.Danielhasboughtanewcomputer.MrWuha

4、sbeentoCanadatwice.WeusethePresentperfecttensetotellhowmanytimesanactionhashappenedtillnow.DifferencesbetweenSimplepasttenseandPresentperfecttense.CompletePartAandPartBonpage41andunderlinethedifferenttimeexpressions.DifferenttimeexpressionsbetweentheSimplepasttenseandthePresentperfec

5、ttense.WeoftenusethesetimeexpressionswiththeSimplepasttense:yesterday,theotherday,last…,…ago,justnow.WeoftenusethesetimeexpressionswiththePresentperfecttense:already,just,recently,yet,sofar,uptonow,tillnow,for…,since…,inthepast/lasttenyears.CompleteMillie’sdiaryentrywiththecorrectfor

6、msoftheverbsinthebox(PartDonpage42).Completetheconversationusingthecorrectformsoftheverbsinbrackets(PartConpage42).Workinpairs.UsePartCasamodel.Talkabouttheplacesofinterestyou’vevisitedbefore.Payattentiontothetenses.Thankyou