牛津译林版必修二Unit1Talesoftheunexplained优秀

Unit1Talesoftheunexplainedgrammar导学案一、现在完成时1．构成have/hasdone2．用法=1\*ROMANI表示过去发生的事对现在具有影响。1）Justinhasdisappeared,soKellyisverysad.2）Theboyishappy．Hehascaughtabird.=2\*ROMANII表示过去开始的动作一直延续到现在或者还将持续下去。1）IhavenotseenJustinsinceLastFridaynight.2)DanielhaslivedinBeijingsincehecametoChina．=3\*ROMANIII表示动作的确切时间不明确或不重要。此时下列词汇经常和现在完成时连用：already,ever,never,for,just,lately/recently,since,yet。1）Theboyhasalreadycomehome.2）Ihaven’theardanythingfromhimyet.其中，for+一段时间，since+某个时间点。．Wehaven’tseenhimfortwodays．Wehaven’tseenhimsincelastMonday.=4\*ROMANIV表示到现在为止的一段时间内重复的动作。1）SomevillagerssaythattheyhaveseenUFOsmanytimes.2）Ihaveadvisedhimtogiveupsmokingmanytimes,buthejustwon’tlistentome.=5\*ROMANV现在完成时还可用于下列句型中：This/Itisthebest/finest/mostinteresting…+that-clause,This/Itisthefirst/second…time+that-clause,that从句中的谓语动词一般用现在完成时。Itis/hasbeenaperiodoftimesince+一般过去时1）ThisisthebestbookthatIhaveread.2）ItisthefirsttimethatIhaveseenthefilm.3）Itis/hasbeenalongtimesinceIcametoWuxi.3．注意1）现在完成时不和明确的表示时间的词连用，如yesterday,lastweek,in1976等。2）表示短暂意义的动词，如begin,leave,arrive,return,stop,open,go,come,die等，不能与表示一段时间的状语连用。*ReadthefollowingsentencesandsayTorF.(1)HehascometoBeijingsincelastyear．F(2)Hehasbeenhereforthreeyears．T(3)HehasjoinedthearmyforthreeyearsF(4)Hehasbeenasoliderfor3years．T(5)Itis3yearssincehejoinedthearmy．T(6)Hehasjoinedthearmy．T二、现在完成进行时1．构成have/hasbeendoing．Ihaven’tbeensleepingwellsinceIreturnedhome.2．用法表示动作从过去开始一直延续到现在，可能刚刚停止，也可能仍然在进行。1）--Sorry,I’mlate．Haveyoubeenwaitinglong?--Yes．Ihavebeenwaiting(wait)foranhour.2)Sheisverytired．Shehasbeenworking(work)allmorning.3)Themanstartedworkinginthefieldhalfanhourago．Heisstillworkingnow.Themanhasbeenworking(work)inthefieldforhalfanhour.4)Theboystartedhavingdinnerfiveminutesago．Heisstillhavingdinnernow.Theboyhasbeenhaving(have)dinnersincefiveminutesago.3．注意现在完成进行时多用持续性动词，如do,live,learn,lie,stay,wait,stand,study等。常和allthetime,thisweek,thismonth,allnight,allthemorning,recently等表示现在之前这一段时间的状语以及since和for引导的时间状语或从句连用。．Hehasbeenwatchingtelevisionallday.IhavebeenlearningEnglishforthreeyears.She’sbeenplayingtennissinceshewaseight.Thiswholeweek,hehasbeentrainingsomenewemployees.Hehasbeensmokingtoomuchrecently．三、现在完成时和现在完成进行时的比较1．现在完成时表示到现在为止已经完成的动作，强调结果；而现在完成进行时强调动作的持续性，强调“一直”，往往表示动作仍未结束。Ihavebeenreadingthisnovel．我一直在读这本小说。（书不一定看完）Ihavereadtwonovels．我已读过两本小说。（动作已完成）Ihavebeenwritingletters．我一直都在写信。Ihavewrittenthreeletters．我已经写完三封信了。2．有些动词如study,work,live用两种时态都可以，意思差别不大。Ihavelivedheresince1990．/Ihavebeenlivingheresince1990.Theyhavestudiedtheproblemforquitesometime．/Theyhavebeenstudyingtheproblemforquitesometime.3．有些动词动词本身表示一种持续的状态，一般不用现在完成进行时，如be,know,love,remember,understand,see,like,last。I’veknownhimformanyyears.Theyhavenotseeneachotherforalongtime.Thewarhaslastedforalongtime.动词填空1．Howlong______you_____________(do)thiswork?(have,beenwaiting)2．Thereyouare．I_________________(wait)foranhour．(havebeenwaiting)3．Whyareyourclothessodirty?What______you___________(do)?(have,done)4．There______________(be)twoworldwarsinthepasthundredyears．(have,been)5．He_____never_________(drive)acarbefore．(has,driven)6．We_____________________(marry)forthreeyears．(havebeenmarried)7．---______you_________(find)yourdog?(Have,found)---No.8．I______________(notsee)LucysincelastFridaynight．(haven’tseen)