2023学年完整公开课版WearetryingtosavethemanateesSec

1.吉姆买了这只钢笔两年了。

Jimhashadthispenfortwoyears.Jimhashadthispensincetwoyearsago.Jimhashadthispensince2003.ItistwoyearssinceJimboughtthispen.IthasbeentwoyearssinceJimboughtthispen.Jimboughtthispentwoyearsago.2.李雷自从2003年就参军。3.那部电影开始30分钟了。4.自从两年前这家商店就开了。5.那个老人已经死了五年了。6.莉莉六年前就离开家了。

现在完成时和一般过去时的区别：现在完成时所表明的是过去发生的动作对现在的影响,强调的是现在的情况,不可以和表示过去的时间状语yesterday,in1991,threedaysagolasttime,lastnight等连用。一般过去时表明的是过去发生的事实,和现在不发生关系。

5.现在完成时中的for与sincefor+时间段与延续性动词的现在完成时连用since+时间点/从句。

Ihavekeptthelibrarybookforaweek.=Ihavekeptthelibrarybooksinceaweekago.

Itis/hasbeen+一段时间+since...

自从某事发生已有一段时间了。

eg.Itis/hasbeentwoyearssincemybrotherjoinedthearmy.

注意:1.since引导的从句中动词用过去时。

2.when引导的特殊问句不与现在完成时连用。

3.havegot,hasgot虽然是现在完成时,但havegot=havehasgot=has1.It'salongtimesincewe______(meet)lasttime,isn'tit?

2.--Iknowyou__________(choose)apicturebookamongthese.

--Yes,Havealookatit,please.

3.Sofar,spaceshipswithoutpeople__________(reach)themoonandsomeotherpartsoftheuniverse.

methavechosenhavereached4.Myfather____homefornearlythreeweeks.

A.hasgoneawayfrom

B.hasleft

C.hasbeenawayfrom

D.wentaway

5.MrandMrsGreenhave____inChinaforaweek.

A.been

B.got

C.arrived

D.reached近义句转换：

1.JackjoinedtheLeaguefivemonthsago.Jack_________aLeaguemember

fivemonthsago.2.It’salongtimesincewemetlast.We_______________eachotherforalongtimesincewemetlasttime.hasbeenhaven’tseenFillintheblankswiththerightformsofthegivenwords.1.Everydaymymother_____(get)upearly.2.Thedinosaureggs_____________(discover)manyyearsagobyscientists.3.Listen!Somechildren___________(sing)anEnglishsongoverthere.getswerediscoveredaresinging4.Inourhometownthereusedto___(be)