八年级英语上册 现在完成时的用法课件 人教新目标版.ppt

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1、thePresentPerfectTenseThekeyisn’tinhispocketsnow.Hehaslosthiskey.Theyareintheroomnow.Theyhavecomeintotheroom.pastnowYesterday,wecleanedtheclassroom.Now,theclassroomiscleanbecausewehavecleanedit.用法1强调过去发生的动作对现在产生的结果或影响1.Myfatherboughtmanybooksformeyesterday.Now,Ihavealottoreadbe

2、cause________________________________2.Isawthisfilmlastweek.Now,IknowthisfilmbecauseI_____________________.3.Ifinishedmyhomeworkyesterday.Now,IcangiveittotheteacherbecauseI______________myfatherhasboughtmanybooksforme.haveseenitbeforehavefinishedit.“仍然，还”用在疑问句和否定句中。Ihaven’tread

3、thisbookyet.Haveyouhadbreakfastyet?already:Yet:“已经”通常用于肯定句中。Ihavealreadypostedtheletter.有时，也用在疑问句中表示惊讶。Haveyoueatenupallthefoodalready?构成：have/has+动词过去分词时间状语：already，yet，ever，never，just，before“从来不”用在否定句中。Ishefamous?Ihaveneverheardofhim.evernever“曾经”通常用于疑问句和肯定句中。Ihaveeverseenthi

4、sfilm.HaveyoueverbeentotheUSA?“以前”用在完成时中，放在句尾。Ｉhaveneverreadthiskindofbooksbefore.justbefore“刚刚”用在陈述句中。Ihavejustboughtanovel。Shebegantoworkin1999.Shestillworksherenow.Shehasworkedatthisschoolfor2years.nowpastIbegantoteachEnglishatthisschoolfiveyearsago.IhavetaughtEnglishatthiss

5、choolfourfiveyears.用法2：过去发生的动作一直延续到现在。1.Iamadoctor.IbegantoworkwhenIwas22.Now,Iam26.I________forfouryears.2.WewenttotheUSAlastMonday.TodayisMonday.We_________(stay)intheUSAsincelastMonday.haveworkedhavestayedsinceandforThewomanhasworkedatthisschoolfor2years.(sincetwoyearsago)si

6、nce2yearsagosince1998;sinceshecametotheschool)for+一段时间since+点时间一、用for和since填空。______threehours______threeo’clock______twodays______yesterdayafternoon______Icamehere______lastSunday_______aweek_______alongtime_______1997______twoweeks_______threeyearsago_______lastmonthforsincef

7、orsincesincesinceforforsinceforsincesince1.They’veknowneachothersince_______.A.1995B.threeyears2.I’vebeeninterestedinChinesefor______.A.lastyearB.oneyear3.Shehasbeenadoctorfor______.A.twoyearsB.twoyearsago4.I’vehadaheadachesince_______.A.IgotupthismorningB.fivehours5.We’vebeenh

8、erefor______.A.onehourB.oneo’clockAABAB6.Myparentshave