Unit3OnlineToursGrammar1.知识目标:学习词汇:dream,passport学习词组:dreamof/about,realizeourdream,takeanonlinetour2.技能目标:1)了解一般过去时和现在完成时的区别。2)能组织含有一般过去时和现在完成时的句子。3)理解并运用常和一般过去时和现在完成时连用的时间表达方式。3.情感目标:用一般过去时和现在完成时谈论家乡的过去和现在。SimplepasttenseandPresentperfecttenseAskandansweraboutsomethingincludingSimplepasttenseandPresentperfecttense.1.HaveyoueverbeentoBeijing?2.WhendidyougotoBeijing?3.HowmanytimeshaveyoubeentoBeijing?4.Haveyoueverboughtacomputer?5.Whenandwheredidyoubuyit?6.Howmanytimeshaveyouuseditforanonlinetour?WorkouttheruleTherearesomedifferencesbetweentheSimplepasttenseandthePresentperfecttense.WeusetheSimplepasttensetotellwhathappenedinthepast.DanielwenttoBeijingtwoyearsago.Danielboughtanewcomputerlastmonth.MrWuvisitedCanadain2010and2011.WeusethePresentperfecttensetotalkaboutanactionthatstartedinthepastandcontinuestothepresent.DanielhasbeentoBeijingfortwoyears.WeusethePresentperfecttensetotalkabouttheresultofanaction.Whentheactionhappenedisnotveryimportant.Itmayhavejusthappenedorhappenedsometimeago.Danielhasboughtanewcomputer.MrWuhasbeentoCanadatwice.WeusethePresentperfecttensetotellhowmanytimesanactionhashappenedtillnow.DifferencesbetweenSimplepasttenseandPresentperfecttense.CompletePartAandPartBonpage41andunderlinethedifferenttimeexpressions.DifferenttimeexpressionsbetweentheSimplepasttenseandthePresentperfecttense.WeoftenusethesetimeexpressionswiththeSimplepasttense:yesterday,theotherday,last…,…ago,justnow.WeoftenusethesetimeexpressionswiththePresentperfecttense:already,eer,just,recently,yet,sofar,uptonow,tillnow,for…,since…,inthepast/lasttenyears.CompleteMillie’sdiaryentrywiththecorrectformsoftheverbsinthebox(PartDonpage42).Completetheconversationusingthecorrectformsoftheverbsinbrackets(PartConpage42).Workinpairs.UsePartCasamodel.Talkabouttheplacesofinterestyou’vevisitedbefore.Payattentiontothetenses.当堂反馈1.Recitenewwordsandphrases.2.RevisethedifferencesbetweentheSimplepasttenseandthePresentperfecttense.3.Dosomeexercises4.Previewintegratedskills.Homework