课件英语选择性必修一Unit6Usinglanguage.pptx

Unit6NurturingnatureUsinglanguagePresentperfectcontinuousBYMICHELLE

Activity1Lookatthesentencesfromthereadingpassageandanswerthequestions.1.Whichofthesestatementsaretrueaboutsentence(a)?(1)Wildanimalsstartedusingthesepassagesinthepast.(2)Wildanimalsusedthesepassagesonlyonce.(3)Wildanimalsstillusethesepassagesnow.2.Whatisthedifferencebetweentheexpressionsinboldinsentences(a)and(b)?Theyaredifferentinformandmeaning.Forsentence(a)theformis“havebeendoing”,whileforsentence(b)theformis“havedone”.Inmeaning,theboldpartinsentence(a)meanstheactioniscontinuousfromthepast;whiletheboldpartinsentence(b)meanstheactionhappenedonceinthepast.

1.ThetrainhasbeenracingalongsteadilysinceitleftXining.2.Allthistime,thesong“SkyRailway”hasbeenplayinginsidemyhead.3.Thejourneyhasbeenflyingby,...4.TheQinghai-TibetPlateauhasbeenattractingpeople’sadmirationforcenturies.5....passengersfromalloverthecountryhavebeenenjoyingthesemagicallandscapes.Nowlookformoresentenceswiththepresentperfectcontinuoustenseinthereadingpassage,andsummariseitsuseinyourownwords.

Grammar:Presentperfectcontinuous现在完成进行时表示动作从过去某一时间开始一直持续到现在，这个动作可能终止，也可能还在进行。1.现在完成进行时的概念2.现在完成时的形式have/hasbeendoing

Grammar:Presentperfectcontinuous3.现在完成时和现在完成进行时的区别1）在不用时间状语的情况下，现在完成进行时的动作不一定已经完成，很可能持续下去，而现在完成时一般表示动作已经完成。即现在完成进行时强调动作的延续性，而现在完成时强调动作的结果。a.Ihavebeendesigningsolarracingcars.我一直在设计太阳能赛车。b.Ihavedesignedfiveorsixdifferentcars.我已经设计五六辆小汽车了。

Grammar:Presentperfectcontinuous3.现在完成时和现在完成进行时的区别2）现在完成进行时往往表示动作在重复，而现在完成时一般不表示动作的重复。a.Ihavebeentakingpartinracesforfouryears.我这四年一直在参加比赛。b.Howmanyraceshaveyoutakenpartin?你参加多少场比赛了？

Grammar:Presentperfectcontinuous3.现在完成时和现在完成进行时的区别3）现在完成进行时与所有进行时态一样带有感情色彩，可使表达显得生动，而现在完成时往往只表明一个事实、一种影响或结果，不带感情色彩。Whathaveyoubeendoing?Youlookedfedu