英语新目标八年级(下)Unit9 Grammar课件.ppt

《英语新目标八年级(下)Unit9 Grammar课件.ppt》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、thePresentPerfectTense现在完成时助动词have(has)+过去分词donepastnowYesterday,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,Ihavealottoreadbecause________________________________2.Isawthisfilmlastweek.Now,Ik

2、nowthisfilmbecauseI_____________________.3.Ididmyhomeworkyesterday.Now,IcangiveittotheteacherbecauseI______________myfatherhasboughtmanybooksforme.haveseenitbeforehavedoneit.“仍然，还”用在疑问句和否定句中，放在句末。Ihaven’treadthisbookyet.Haveyouhadbreakfastyet?already:Yet:“已经”通常用于肯定句中,放在句中。Ihavealrea

3、dyreadthisbook.有时，也用在疑问句中表示惊讶。Haveyoueatenupallthefoodalready?“从来不”用在否定句中,放在句中。Ishefamous?Ihaveneverheardofhim.evernever“曾经”通常用于疑问句和肯定句中,放在句中。Ihaveeverseenthisfilm.HaveyoueverbeentotheUSA?“以前”用在完成时中，放在句末。Ｉhaveneverreadthiskindofbooksbefore.justbefore“刚刚”用在陈述句中,放在句中。Ihavejustboughtan

4、ovel。Shebegantoworkin2005.Shestillworksherenow.Shehasworkedatthisschoolfor3years.nowpastIbegantoteachEnglishatthisschoolfiveyearsago.IhavetaughtEnglishatthisschoolforfiveyears.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.WewenttotheUSAlast

5、Monday.TodayisMonday.We_________(stay)intheUSAsincelastMonday.haveworkedhavestayedsinceandforThewomanhasworkedatthisschoolfor2years.(sincetwoyearsago)since2yearsagosince1998sinceshecametotheschool)for+时间段since+时间点for2years/alongtime一、用for和since填空。______threehours______threeo’clock__

6、____twodays______yesterdayafternoon______Icamehere______lastSunday_______aweek_______alongtime_______1997______twoweeks_______threeyearsago_______lastmonthforsinceforsincesincesinceforforsinceforsincesince1.They’veknowneachothersince_______.A.1995B.threeyears2.I’vebeeninterestedinCh

7、inesefor______.A.lastyearB.oneyear3.Shehasbeenadoctorfor______.A.twoyearsB.twoyearsago4.I’vehadaheadachesince_______.A.IgotupthismorningB.fivehours5.We’vebeenherefor______.A.onehourB.oneo’clockAABAB6.Myparentshaveownedthishousefor______.A.alongtimeB.manyyearsago7.They’vebeeninlovesi

8、nce______.A.lastspr