RevisionUint3Book3课件

说明有某种经历，我们应做一些有益于改善环境的事情，5保护环境很重要，theworldwillbecomemuchmorebeautiful描述过去发生的但与现在情况有关的动作或状态，仙居外语学校：赵智勇Unit3beafraidof(sth/doingsth)Leavesthon/atamemberof…themore…thebetterhalfayearcollectwastepapermakesure=besurecometoone’searsthrowindowellin=begoodatassoonaspour…into…takecareof=lookafterpickflowerscutdowntreesspitinapublicplace－HowlonghaveyoubeenamemberofGreenerChina?－I’vebeenwithGreenerChinaforayear/sinceayearagoHowmanyEnglishwordshaveyoulearntsinceyoucamehere?3你曾经扔过垃圾在地上并且捡起放在垃圾箱里吗？4我们不要在公共墙上画也不要在公共地方吐痰，如果大家为保护环境做点贡献，Haveyoueverthrownanylitterontothegroundandpickeditupthenputitintoadustbin?Wemustn’tdrawonpublicwallsandspitinapublicplaceTakingcareoftheenvironmentisveryimportantWeshoulddosomethingusefultoimprovetheenvironmentIfeveryonemakesafewcontributionstoprotectingtheenvironment，have(has)+过去分词have(has)not+过去分词Have(Has)…+过去分词…?(影响是不必再做作业了)(结果是她现在没有铅笔盒)①have/hasbeento表示“曾去过”，世界就变得更加美好了，或是从过去某时刻到现在为止这段时间中发生的情况，②have/hasgoneto，