八年级英语下册 Unit 2 Travelling grammar 1课件 （新版）牛津版.ppt

usinghave hasbeenandhave hasgone 8bunit2grammar1 现在完成时态的含义是表示过去发生的或已完成的动作对现在造成的影响或结果 特点是既涉及过去 又联系现在 动作是过去发生的 结果是现在存在的 look theblackboardissocleannow hehascleanedtheblackboard 他已经擦过黑板了 这句话所表示的结果是黑板现在是干净的 一 现在完成时谓语动词的构成 助动词have has not v ed 过去分词 i finish thecompositionalready he learn englishforthreeyears we you they she havefinished haslearned 这种用法常与already just yet ever never before 句末 等连用 i do myhomeworkalready he notfinished hishomeworkyet youever be tobeijing we never see suchanexcitingmatchbefore mother just clean thehouse pleasedon tcomein they practice thisdialoguetwice havedone hasnotfinished have been have seen has cleaned havepracticed 注意 当在肯定陈述句中含有already或just时 在转换成否定句或疑问句时 要把句中的already或just去掉 在句末加上yet ihaven tseenthefilmyet ihavedonemyhomeworkalready ihaven tdonemyhomeworkyet motherhasjustcleanedthehouse motherhasn tcleanedthehouseyet ihaveseenthefilmalready havebeento曾经去过某地 已返回 someonewenttosomeplaceandhasalreadycomebackhavebeenin去某地一段时间someonestayinsomeplaceforsometimehavegoneto去了某地 没有回来 someonewenttosomeplaceandisstillthere a b a a b bstay 1 ihavegonetojapanbefore 2 thesceneryofmountfujiisverybeautiful ihavebeentotheretwice 3 hisfatherhasbeentobeijing hewon tbebackuntilnextweek 4howlonghaskittybeeninhongkong 5 wherehaveyougone trueorfalse f f f f t been gone been 1 a where sjim lilei b he hisschoollibrary 2 thegreens chinaforthreeyears 3 we thegreatwalltwice it sverybeautiful 4 youever shanghai 5 lilyisn tintheclassroom she thelab 6 lucy chinasince5yearsago hasgoneto havebeenin havebeento have beento hasgoneto has beenin fillinblanks havebeento inhavegoneto 1 她以前曾去过上海 shehasbeentoshanghaibefore 2 他在上海10年了 shehasbeeninshanghaifortenyears 3 他去上海了 hehasgonetoshanghai translations workinpairsreplacetheunderlinedwordswithyourownideas a haveeverbeentocitylibrary b yes ioftengotherewithkitty a butwhere skittyto