八年级英语下册 Unit 3 Online tours Grammar课件 （新版）牛津版.ppt

unit3onlinetoursgrammar pre task enjoyasong it sbeenalongdaywithoutyoumyfriendandi lltellyouallaboutitwheniseeyouagainwe vecomealongwayfromwherewebeganohi lltellyouallaboutitwheniseeyouagainwheniseeyouagain differencesbetweenthesimplepasttenseandthepresentperfecttense 1 主语 动词过去式 其他 主语 have has 动词过去分词 其他 pre task findoutthetensesmainlyusedinthepassage milliehadadreamlastnight shedreamtoftravellingtotheusa milliehasbeentotheusaonce shewenttherein2013 shehadawonderfultimethere heruncleisintheusa hehaslivedthereforethreeyears differencesbetweenthesimplepasttenseandthepresentperfecttense 2 表示过去某时发生的动作 和现在 有 没有 关系 表示过去发生的某一动作 强调和现在 有 没有 关系 没有 有 1 finishparta partbonpage41byyourselves 2 checkanswersingroupsandgiveyourreasons pre task finishsomeexercises differencesbetweenthesimplepasttenseandthepresentperfecttense 3 yesterday lastyear inmay in 过去某一年 twodaysago justnow等 already just yet ever never recently before for 一段时间 since 过去的时间点 theseyears sofar upto tillnow in during overthepast lastfew threeyearsonce twice severaltimes等accordingtothecontext 语境 weusethepresentperfecttensetotalkaboutanactionthatstartedinthepastandcontinuestothepresent danielhaslivedinbeijingfortwoyears weusethesimplepasttensetotellwhathappenedinthepast danielwenttobeijingtwoyearsago differencesbetweenthesimplepasttenseandthepresentperfecttense danielhasboughtanewcomputer danielhasanewcomputernow weusethesimplepasttensetotellwhathappenedinthepast danielboughtanewcomputerlastmonth weusethepresentperfecttensetotalkabouttheresultofanaction whentheactionhappenedisnotveryimportant itmighthappenjustnoworsometimeago mrwuhasbeentocanadatwice mrwuvisitedcanadain2010and2011 weusethesimplepasttensetotellwhathappenedinthepast weusethepresentperfecttensetotellhowmanytimesanactionhappenedtillnow lookatthepicturesandcompletethesentenceswiththekeywords ifyouranswersarecorrect youcangetstars while task task1 lookandsay keywords yearsago live smalloldhouses keywords since1990 move newflats keywords usedto goout bicycle keywords atpresent thegovernment build railwaystation keywords jaychou is littleboy10yearsago keywords now growup keywords inthepast thevillage poor dirty keywords now thevillage become rich clean 1 finishpartconpage41byyourselves 2 checkanswersingroups askmeforhelpifyouhaveanyquestions while task task2 finishexercises post task makeanewdialogue a haveyoueverbeento b yes ihave a whenandwheredid b a howlongdidyoustaythere b a howmanytimes b a isagoodplaceforshopping whatdidyoubuythere b i a whatdoyouthinkof b ithinktheyare 1 finishpartdonpage41byyourselves 2 checkanswersingroups askmeforhelpifyouhaveanyquestions post task finishexercises writeaboutmillie strip usingthesimplepasttenseandthepresentperfecttense writing simplepasttense presentperfecttense 构成 时间状语 语境 did have hasdone yesterday in1980 lastweek ago justnow theotherday等 for since ever never just yet recently before 次数 inthepastyears overtheyears sofar等 表示过去某时发生的动作或单纯叙述过去的事情 强调