2017年高一英语人教版必修3教案：Unit4LearningaboutLanguage：Grammar+Word版含解析

教学设计LearningaboutLanguage：Grammar整体设计教材分析Thisteachingperiodmainlydealswiththefollowing：1.Reviewingnounclausesastheobjectandasthepredicative；2．Learningthenewgrammaritem：nounclausesasthesubject.Studentsoftenfeelnounclausesabstractanddifficulttolearn，soitisnecessarytomakethelessoninterestingandlively，andconnectitwiththeirdailylifeinordertoletiteasytoacceptandunderstand.Firstly，theteachercanaskstudentstoreadthepassageHOWLIFEBEGANONTHEEARTHagain，tickoutallthesentencesfromthepassagewherenounclausesareusedasthesubject，andthentranslatethemintoChinese.Secondly，compareanddiscovertheusesofeachnounclausebygivingalotofexamplesentences.Thirdly，dotheexercisesinDiscoveringusefulstructuresonPage29andmoreexercisesforstudentstomastertherelatednounclauses.Finally，summarizetheuseofnounclausesasthesubjectandletstudentsmakeitclearhoweachnounclauseisbeingusedinthesituations.Attheendoftheclass，askstudentstodotheexercisesinUsingStructuresonPage64andmoreadditionalexercisesforconsolidation.教学重点Getstudentstounderstandandusenounclausesasthesubject.教学难点Enablestudentstolearnhowtousenounclausesasthesubjectcorrectly.三维目标知识目标1．Getstudentstoknowmoreaboutnounclauses.2．Letstudentslearnnounclausesasthesubject.What_it_was_to_becomewasamystery……itwasnotclearwhether_the_solid_shape_was_to_last_or_not.能力目标Enablestudentstousenounclausesasthesubjectcorrectlyandproperlyaccordingtothecontext.情感目标1．Getstudentstobecomeinterestedingrammarlearning.2．Developstudents'senseofgroupcooperation.教学过程Step1Revision1．Checkthehomeworkexercises.2．Dictatesomenewwordsandexpressions.3．Translatethefollowingsentences.1）你早晚会来的。2）我的车与你的不一样。3）他总是第一个来，最后一个走。4）他来不来还不清楚。5）我们的成败取决于是否每个人都努力工作。6）我们必须采取措施防止这种疾病的蔓延。Suggestedanswers：1）Youwillcomehereintime.2）Mycarisdifferentfromyours.3）Heisalwaysthefirsttocomeandthelasttogo.4）Itisnotclearwhetherhecomesornot.5）Oursuccessdependsonwhethereveryoneworkshardornot.6）Wemusttakeactiontopreventthisdisease（from）spreading.Step2PreparationShowsomesentencesonthescreen.Askstudentstoreadeachofthemandthenfindoutitssubject.Atreehasfallenacrosstheroad.Youareastudent.Tofindyourwaycanbeaproblem.Smokingisbadforyou.“Howdoyoudo？”isagreeting.Whatshesaidisnotyetknown.Thatweshallbelateiscertain.It'scertainthatweshallbelate.Step3Grammarlearning1．ReadinganddiscoveringAskstudentstoturnbacktoPage25toreadthroughthereadingpassageandfindallthesentenceswherenounclausesareusedasthesubjectandunderlinethem.ThentranslatethemintoChinese.Suggestedanswers：1）What_it_was_to_becomewasuncertainuntilbetween4.5and3.8billionyearsagowhenthedustsettledintoasolidglobe.地球会变成什么（样子），直到45亿至38亿年前这个云团变成一个固体的球状物，才确定下来。2）Theearthbecamesoviolentthatitwasnotclearwhether_the_shape_would_last_or_not.地球变得激烈动荡，不知道这个固体形状是否会继续存在下去。3）What_is_even_more_importantisthatastheearthcooleddown，waterbegantoappearonitssurface.更重要的是，随着地球的冷却，地球的表面就开始出现了水。4）Itwasnotimmediatelyobviousthatwaterwastobefundamentaltothedevelopmentoflife.水对于生命的发展会起关键作用，这一点在当时并不明显。5）What_many_scientists_believeisthatthecontinuedpresenceofwaterallowedtheearthtodissolveharmfulgasesandacidsintotheoceansandseas.很多科学家相信，由于地球上长期有水存在，使地球得以把有害气体和酸性物质溶解在海洋里。6）Why_they_suddenly_disappearedstillremainsamystery.为什么它们突然消失了，至今还是个谜。7）Sowhether_life_will_continue_on_the_earth_for_millions_of_years_to_comewilldependonwhetherthisproblemcanbesolved.所以，在未来的数百万年中，生命能否在地球上延续取决于这个问题能否得到解决。2．ThinkinganddiscussingLetstudentsreadaloudthesentencestheypickedout，thinkoveranddiscusswithapartnerhoweachofthesenounclausesisbeingusedinthesituations.Ifstudentshavesomedifficulty，givethemahand.3．Summingup：nounclausesasthesubject.主语从句作主语用的名词性从句，因其在复合句中作主语，又称主语从句。（1）连接词：1）从属连词that，whether等。that引导主语从句只起引导作用，本身无实际意义，在主语从句中不充当任何成分，但不能省略。Thatshelefthimcuthimtotheheart.她的离开使他很伤心。由whether引导的主语从句放在句首、句末都可。Whetheritwillpleasethemisnoteasytosay./Itisnoteasytosaywhetheritwillpleasethem.很难说这会不会使他们高兴。2）连接代词who，what，which，whoever，whatever，whichever等。Whatseemseasytosomepeopleseemsdifficulttoothers.对某些人看来很容易的事，对另外一些人可能很困难。3）连接副词when，where，how，why等。Whyhediditremainsamystery.他为什么做那件事依然是个谜。（2）位置主语从句可以前置，也可以后置。用it作形式主语，而把主语从句放在句末，常用下面几种句型：1）It＋be＋表语＋主语从句Itisstilluncertainwhetherheiscomingornot.他是不是来还没有确定。2）It＋不及物动词＋主语从句Ithappensthattheywereabsent.他们碰巧缺席了。3）It＋及物动词（被动语态）＋主语从句IthasbeendecidedthattheexhibitionwillnotopenonSundays.现经决定展览会星期日不开放。注意：1）主语从句在句首时，必须由连接词引导，不能省略这些连接词；但是如果用it作形式主语，而把主语从句放在句末时，从属连词that可以省略。他们相互喜爱是很自然的。误：Theyshouldlikeeachotherisnatural.正：Thattheyshouldlikeeachotherisnatural.正：Itisnatural（that）theyshouldlikeeachother.2）如果主语从句放在句首，不能用if引导；但是如果用it作形式主语，而把主语从句放在句末时，也可以用if引导。玛丽是不是真听见他了，很值得怀疑。误：IfMaryreallyheardhimisreallydoubtful.正：WhetherMaryreallyheardhimisreallydoubtful.正：Itwasdoubtfulwhether/ifMaryreallyheardhim.Step4Grammarpractice1．TurntoPage29.AskstudentstodoExercise2andExercise3inDiscoveringusefulstructures.Firstletthemfinishthemindividually.Thenchecktheanswerswiththewholeclass.Givesomeexplanationsifnecessary.2．TurntoPage64.AskstudentstodoExercise1andExercise2.Checktheanswersaftermostofthemfinish.Step5DiscussionLetstudentshaveadiscussioningroups.Thetopicis“Myproblem”．Onetalksabouttheproblemsinhisstudyorlife.Theothersshouldgivesomeadviceorsuggestions.Remindstudentstousethefollowingstructures：（Showthefollowingonthescreentohelpstudents.）Thefactis/Itisafactthat…Thedifficultyis…/WhatIfinddifficultis…Thetroubleis…/Whatworriesmeis…Mysuggestionis…/WhatIwouldsuggestis…Myadviceis…/WhatIwouldadviseis…Ithinkthat…/WhatIthinkis…Iwanttotellyouthat…/WhatIwanttosayis…Step6ClosingdownbyaquizShowthefollowingexercisesonthescreen.Letstudentsfinishthemwithinthreeminutes.Threeminuteslater，checktheanswerswiththewholeclass.1．Ihavealwaysbeenhonestandstraightforward，anditdoesn'tmatter______thatI'mtalkingto.A．whoisitB．whoitisC．itiswhoD．itiswhom2．Itisprettywellunderstood______controlstheflowofcarbondioxideinandouttheatmospheretoday.A．thatB．whenC．whatD．how3．______madetheschoolproudwas______morethan90%