英语人教版八年级下册现在完成时态.pptx

《英语人教版八年级下册现在完成时态.pptx》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、现在完成时态的复习unit8----unit10现在完成时谓语动词的构成:主语+have/has+Vp.p(过去分词)1.I_________(finish)homeworkalready.2.He_____(learn)Englishforthreeyears.havefinishedhaslearned句式变换1Hehasfinishedhishomework.(变为否定句)2TheyhavevisitedChinabefore(变为一般疑问句，并做肯定回答)Hehasn'tfinishedhishomework.HavetheyvisitedChinab

2、efore?Yes,theyhave.想一想1.现在完成时的第一种用法是什么？2.常用的时间状语有哪些？3.你能说出already和yet有哪些不同吗？表示过去发生的动作对现在造成的影响和结果时间状语：already，yet,ever,never,just,before等注意：如果肯定句中含有already和just,在变成否定句或疑问句时，要把already和just转换成yet.用动词适当形式填空：1I__________(do)myhomeworkalready.2He____________(notfinish)hishomeworkyet.3We__

3、____never_____(see)thisbookbefore.4Mother____just_____(clean)thehouse.5Sally______(visit)Chinabefore.用动词适当形式填空：1Ihavedone(do)myhomeworkalready.2Hehasn'tfinished(notfinish)hishomeworkyet.3Wehaveneverseen(see)thisbookbefore.4Motherhasjustcleaned(clean)thehouse.5Sallyhasvisited(visit)C

4、hinabefore.现在完成时（二）1现在完成时的第二种用法是什么？2常用的时间状语有哪些3for和since用法有什么不同？现在完成时（二）1表示动作从过去发生，一直延续到现在，并且有可能继续延续下去2时间状语通常和for,since引导的时间状语连用。for+一段时间，foraweek,for3years,foralongtimesince+时间点，since2o'clock，sinceyesterday,since5yearsago,since+从句,sinceIcamehere等注意：对for或since引导的时间状语提问必须用howlong1Iha

5、velivedherefor10years.Howlonghaveyoulivedhere?2Shehasstoodheresince2hoursago.Howlonghasshestoodhere?选用since和for填空1Wehaven'tseeneachother__alongtime.2Hisfatherhasbeenintheparty____10yearsago.3Thefilmhasbeenon____20minutes.4MrGreenhasworkedhere____hecametoChina5Hisgrandfatherhasbeende

6、ad____twoyears.选用since和for填空1Wehaven'tseeneachotherforalongtime.2Hisfatherhasbeenintheparty_since10yearsago.3Thefilmhasbeenonfor20minutes.4MrGreenhasworkedheresincehecametoChina5Hisgrandfatherhasbeendeadfortwoyears.havebeento与havegoneto区别havebeento曾经去过某地（已经回来）havegoneto去了某地（还没回来）Tru

7、eorfalse?1IhavegonetoJapanbefore()2Guilinisverybeautiful,Ihavebeentotheretwice.()3HisfatherhasgonetoBeijing.Hewillbebacknextweek()4wherehaveyougone（）Trueorfalse?1IhavegonetoJapanbefore(F)been2Guilinisverybeautiful,Ihavebeentotheretwice.(F)3HisfatherhasgonetoBeijing.Hewillbebacknextw

8、eek(T)4wherehaveyou