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《Unit 1 Tales of the unexplained Present perfect tense & Present perfect continuous tense 導(dǎo)學(xué)案》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在教育資源-天天文庫。
1、Unit1TalesoftheunexplainedPresentperfecttense&Presentperfectcontinuoustense導(dǎo)學(xué)案一、現(xiàn)在完成時1、構(gòu)成have/hasdone2、用法I表示過去發(fā)生的事對現(xiàn)在具有影響。1)Justinhasdisappeared,soKellyisverysad.2)Theboyishappy.Hehascaughtabird.II表示過去開始的動作一直延續(xù)到現(xiàn)在或者還將持續(xù)下去。1)IhavenotseenJustinsinceLastFridaynight.2)DanielhaslivedinBeijing
2、sincehecametoChina.III表示動作的確切時間不明確或不重要。此時下列詞匯經(jīng)常和現(xiàn)在完成時連用：already,ever,never,for,just,lately/recently,since,yet。1)Theboyhasalreadycomehome.2)Ihaven’theardanythingfromhimyet.其中,for+一段時間,since+某個時間點。E.g.Wehaven’tseenhimfortwodays.Wehaven’tseenhimsincelastMonday.IV表示到現(xiàn)在為止的一段時間內(nèi)重復(fù)的動作。1)Somevil
3、lagerssaythattheyhaveseenUFOsmanytimes.2)Ihaveadvisedhimtogiveupsmokingmanytimes,buthejustwon’tlistentome.V現(xiàn)在完成時還可用于下列句型中：This/Itisthebest/finest/mostinteresting…+that-clause,This/Itisthefirst/second…time+that-clause,that從句中的謂語動詞一般用現(xiàn)在完成時。Itis/hasbeenaperiodoftimesince+一般過去時1)Thisisthebes
4、tbookthatIhaveread.2)ItisthefirsttimethatIhaveseenthefilm.3)Itis/hasbeenalongtimesinceIcametoWuxi.3、注意1)現(xiàn)在完成時不和明確的表示時間的詞連用,如yesterday,lastweek,in1976等。2)表示短暫意義的動詞,如begin,leave,arrive,return,stop,open,go,come,die等,不能與表示一段時間的狀語連用。*ReadthefollowingsentencesandsayTorF.(1)HehascometoBeijingsi
5、ncelastyear.F(2)Hehasbeenhereforthreeyears.T(3)HehasjoinedthearmyforthreeyearsF(4)Hehasbeenasoliderfor3years.T(5)Itis3yearssincehejoinedthearmy.T(6)Hehasjoinedthearmy.T二、現(xiàn)在完成進(jìn)行時1、構(gòu)成have/hasbeendoinge.g.Ihaven’tbeensleepingwellsinceIreturnedhome.2、用法表示動作從過去開始一直延續(xù)到現(xiàn)在,可能剛剛停止,也可能仍然在進(jìn)行。1)--So
6、rry,I’mlate.Haveyoubeenwaitinglong?--Yes.Ihavebeenwaiting(wait)foranhour.2)Sheisverytired.Shehasbeenworking(work)allmorning.3)Themanstartedworkinginthefieldhalfanhourago.Heisstillworkingnow.Themanhasbeenworking(work)inthefieldforhalfanhour.4)Theboystartedhavingdinnerfiveminutesago.Heisst
7、illhavingdinnernow.Theboyhasbeenhaving(have)dinnersincefiveminutesago.3、注意現(xiàn)在完成進(jìn)行時多用持續(xù)性動詞,如do,live,learn,lie,stay,wait,stand,study等,常和allthetime,thisweek,thismonth,allnight,allthemorning,recently等表示現(xiàn)在之前這一段時間的狀語以及since和for引導(dǎo)的時間狀語或從句連用。E.g.Hehasbeenwatchingtelevisionallday.I
