素材（语法课件）说课材料.ppt

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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“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。Ihavealreadyreadthisbo

2、ok.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。Ihavejustboughtanovel。S

3、hebegantoworkin2005.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

4、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’c

5、lock______twodays______yesterdayafternoon______Icamehere______lastSunday_______aweek_______alongtime_______1997______twoweeks_______threeyearsago_______lastmonthforsinceforsincesincesinceforforsinceforsincesince1.They’veknowneachothersince_______.A.1995B.threeyears2.I’vebeenin

6、terestedinChinesefor______.A.lastyearB.oneyear3.Shehasbeenadoctorfor______.A.twoyearsB.twoyearsago4.I’vehadaheadachesince_______.A.IgotupthismorningB.fivehours5.We’vebeenherefor______.A.onehourB.oneo’clockAABAB6.Myparentshaveownedthishousefor______.A.alongtimeB.manyyearsago7.T

7、hey’vebeeninlovesince______.A.lastspringB.threemonths8.Wehaveknowneachothersince_____.A.oneyearB.lastyear9.--Howlonghaveyoubeenlikethis?--Since______.A.lastnightB.twodays10.--Howlonghassheworkedhere?--Shehasworkedherefor_____.A.1993B.sixyearsAABABExercise根据所给情况，用just,already或y

8、et造句。1.Afterlunchyougotoseeafriendatherhouse.Shesays‘Wouldyou