高一英语课件Unit1Grammarandusage高一英语课件

Unit1GrammarandusageUnit1Grammarandusage•HavethepolicefoundJustinyet?•Howlonghashebeenawayfromhome?•Hasanyoneseenaliensinthearticle?•HowmanytimeshasMavisWoodseenthem?Thepresentperfecttense:1.Revisetheusageofthepresentperfecttense2.Revisethedifferencesbetweenthepresentperfecttenseandthesimplepasttense.He/ShehasbeentoChinaDinosaursParkonce.alreadyseenthefilm“Titanic”.neverdrivenacar.already/justcleanedtheclassroom.alreadylearnedhowtousethecomputer.notborrowedyourlibrarybookyet.Weusethepresentperfecttensetotalkaboutthingsthathappenedintherecentpast,butareWeuseitwithtimealready,yet,ever,never,connectedtothepresent.expressionssuchas:just,lately,recently,once,twice,…severaltimes,manytimes,sofar,inthepast/last…yearsTranslatethefollowingsentences:1.根据村民们的说法，他们已经看见不名飞行物许多次了。2.最近，你收到你朋友的来信了吗？3.在过去三、四百年期间，世界的人口数量增长得非常快。4.到目前为止，中国有多少宇航员乘宇宙飞船到太空旅行过？5.他还没有读完那本小说。1.在过去三、四百年期间，世界的人口数量增长得非常快。Accordingtothevillagers,theyhaveseenUFOmanytimes.Sofar,howmanyastronautsinChinahavetravelledinspacebyspaceship?Haveyouheardfromyourfriendrecently?Hehasn’tfinishedreadingthenovelyet.Inthepastthreeorfourhundredsyears,theworld’spopulationhasgrownveryfast.Weusethepresentperfecttensetotalkaboutsomethingthatstartedinthepast,Hehasreadthenovelforthreedays.He/ShehaslearnedEnglishforoverfiveyears.He/ShehaslivedinChangzhousincehe/shewasborn.TheyhaveknowneachothersinceJuly./sincethreedaysago.andisstillhappeningnow.Weoftenuseitfor,since,weshouldalsousewithtimeexpressionssuchas:continuousverbs.Judgethefollowingsentences“T”or“F”:()1.HehasboughtthenewwatchsincelastSunday.()2.KatehasbeeninBeijingfortwodays.()3.Mr.Brownhaslefthishometownfortenyears.()4.Ihaveborrowedthebookfortwoweeks.()5.HisbrotherhasjoinedtheLeaguesincethreeyearsago.FHehashadthenewwatchsincelastSunday.TFMr.Brownhasbeenawayfromhishometownfortenyears.FIhavekeptthebookfortwoweeks.FHisbrotherhasbeenintheLeaguesincethreeyearsago.HisbrotherhasbeenaLeaguemembersincethreeyearsago.1.表示动作发生在过去，但强调的是现在的结果或对现在的影响。常与already,yet,ever,never,just,recently,lately,sofar,inthepast/last…years等副词或时间状语连用。2.现在完成时可用来表示从过去某一时刻开始一直持续到现在的动作或状态，常和for或since引导的时间状语连用，也可与since引导的时间状语从句连用，谓语动词通常用持续性动词。现在完成时与一般过去时的区别：justnowShehasalreadyfinishedreadingthebook.Shefinishedreadingthebookjustnow.注意（一）：现在完成时强调过去发生的动作对现在造成的影响，而一般过去时强调过去的动作，不强调过去的动作与现在的关系，现在完成时不能与表示过去的时间状语连用。HehasbeenanEnglishteacherforovertenyears.HewasanEnglishteacherforovertenyears,butnowheisabusinessman.注意（二）：一般过去时虽也可指过去动作的持续，但它不能指动作一直延续到现在（只能是延续到过去某一时间）Choosetherightsentenceineachgroup:1.Hehasstartedtoworkat2:30pm.Hestartedtoworkat2:30pm.2.Hisbrotherjoinedthearmyin2001.Hisbrotherhasjoinedthearmyin2001.3.Ihavelivedinthecountrysidefor16yearsandnowIliveinthecity.Ilivedinthecountrysidefor16yearsandnowIlivein…4.Mygrandpadied15yearsago.Mygrandpahasdied15yearsago.5.Theyhavejustlefttheroom.Theyhavelefttheroomjustnow.Rewritethefollowingsentences:1.Hehashadthenewwatchsinceoneweekago.2.Ihavekeptthebookfortwoweeks.3.Thisfactoryhasbeenopensincetenyearsago.4.Mybrotherhasbeenawayfromschoolforfiveyears.HeboughtthenewwatchIborrowedthebookThisfactoryopenedtenyearsago.Mybrotherleftschoolfiveyearsago.It’s(hasbeen)oneweeksinceheboughtthenewwatch.It’s(hasbeen)twoweekssinceIborrowedthenewwatch.It’s(hasbeen)tenyearssincethisfactoryopened.It’s(hasbeen)fiveyearssincemybrotherleftschool.oneweekago.twoweeksago.Youarewritingaboutafriend’stravelsinyourdiary.Completeyourdiaryentryusingthecorrectformsoftheverbsinbrackets.MyfriendJackhasjustsentmeane-mail,tellingmeabouthistravelsaroundtheworld.He______________(justbe)toQomolangmaBaseCampand_________(see)aYetithere.Heisstillveryexcitedaboutit.He__________(visit)theGreatPyramidinEgypttoo.Hesaysthathe_________(love)Egyptbuthe___________(notvisit)allthepyramidsyet.He________(swim)inLochNess,butluckilyhe____________(nevermeet)theLochNessMonster!He__________(dive)intheIndianOceanmanytimeslookingfortreasure.Althoughhe_________(find)manysunkenships,he___________(notfind)anytreasure._______he_____(be)totheGreatWallbefore?I’mnotsure—butIhave!hasjustbeensawhasvisitedloveshasn’tvisitedhasswumhasnevermethasdivedhasfoundhasn’tfoundHasbeen1.Revisethepresentperfecttense.2.Finishmultiplechoiceonthepaper.