Unit 4 Astronomy_ the science of the stars教案教学设计精品09（人教版高中英语必修三)6页

欢迎您！更多资料请到高中英语版声明：所有内容由收集整理，仅供学习交流使用！Unit4Astronomy:thescienceofthestarsgrammarTeachinggoals1Targetlanguagea重点词汇和短语suffer,settle,realize,worryabout,havegotto,tieupb重点句子：Hewasverydisappointed.Whatitwastobecomewasamystery.Tosavemoney,youmustuseasfewwordsaspossible.c.PractisetalkingaboutproblemsinstudyorlifeMyproblemis…Thedifficultyis…Mytroubleis…Thequestionis…Myadviceis…WhatIthinkaboutitis…Thefactis…Mysuggestionis…2AbilitygoalsLearntouseNounClausesasthesubject..3LearningabilitygoalsLetSslearnhowtouseNounClausesasthesubjectTeachingimportantpointstheuseofNounClausesasthesubjectTeachingdifficultpointsHowtoteachtheSstolearntouseNounClausesasthesubject TeachingmethodsLearngrammarthroughpracticeTeachingaidscomputerTeachingproceduresStep1Revision1.Checkretellingofthepassage.Theexplosionoftheearthproducedwatervapor,whichturnedintowaterwhentheearthcooleddown.Waterallowedtheearthtodissolveharmfulgasesintotheoceansandseas.Thatmadeitpossibleforlifetobegintodevelop.Thearrivalofsmallplantsencouragedthedevelopmentofearlyshellfishandallsortsoffish.Manymillionsofyearslaterthefirstgreenplantsbegantoappearonland.Laterlandanimalsappeared.Somewereinsects.Others,calledamphibians,wereabletoliveonlandaswellasinthesea.Whentheplantsgrewintoforests,reptilesappearedforthefirsttime.Later,dinosaursdeveloped.Theybecamethemostimportantanimalsontheearthformillionsofyears.Aftertheydisappeared,mammalsbecamemoreimportant.Theywerethelastgroupofanimalsandtheyweredifferentbecausetheyproducedtheiryoungfromwithintheirbodies.Smallcleveranimals,withhandsandfeet,appearedandspreadallovertheearth.Astimewentby,theycoveredtheearthandhavebecomethemostimportantanimalsontheplanet.2.Translatethefollowingsentences.1.你迟早会成功的。2.我的车与你的不一样。3.站在门旁边的那个人是谁？4.他总是第一个来，最后一个离开。5.既然你已经长大了，你自己决定吧。Suggestedanswers:1.You’llsucceedintime.2.Mycarisdifferentfromyours.3.Whoisthepersonstandingbythedoor?4.He’salwaysthefirsttocomeandthelasttoleave.5.Nowthatyouhavegrownupyoucandecideityourself. Step2PreparationShowsomeexamplesentencesonthescreen.1Atreehasfallenacrosstheroad.2Youareastudent.3Tofindyourwaycanbeaproblem.4Smokingisbadforyou.5“Howdoyoudo?”isagreeting.6Whatshesaidisnotyetknown.7Thatweshallbelateiscertain.8It’scertainthatweshallbelate.Whatpartdoestheunderlinedpartserveasineachsentence?Orfinditssubjectineachsentence.Step3Grammar定义：用作主语的从句叫主语从句，它是名词性从句之一。引导主语从句的连接词有：连词that,whether；连接代词who,what和which；连接副词when,where,how和why。1)由what等代词引起的主语从句：Whattheteachersaidtodaywasquiteright. 老师今天说的话是十分正确的。2)由连词that引起的主语从句：Thattheyarebadlyinneedofhelpisquiteclear.他们急需帮助，这是十分明显的。但是这类句子在大多数情况下会放到整个句子的后部去，而用代词it作形式主语。3)由连接代词或连接副词以及whether引起的主语从句。Whethertheywillsellthehouseisnotyetdecided.他们是否卖掉这所房子还没有决定。4)whatever,whoever也可引导主语从句。Whateverwassaidheremustbekeptsecret.这里说的话都应当保密。Whoevermakesmistakesmustcorrectthem.凡犯了错误的人都必须改正。注意:上述例句中的主语从句都是放在句首,但有时为了使句子结构平衡,避免“头重脚轻”,常用it作形式主语,而把从句放在后面。例如:　　Itisapitythatshehasmadesuchamistake.她犯了这样一个错误,真是遗憾。这样就构成了下面一些常用句型:1)Itis+adj./n.+从句　Itisapity/shamethat...遗憾的是…… 　Itispossiblethat...很可能……　Itisunlikelythat...不可能……2)It+不及物动词+从句　Itseems/appearsthat...似乎……　Ithappenedthat...碰巧……3)It+be+过去分词+从句　　Itissaidthat...据说……　　Itisknowntoallthat...众所周知……　　Itisreportedthat...据报道……　　Itisbelievedthat...据信……;人们相信……　　Itissuggestedthat...有人建议……单个的主语从句作主语时谓语动词用单数；由and连接的两个主语从句作主语时，谓语动词用复数。Step4practiceEx1fillintheblanks.1._____youdon’tlikehimisnoneofmybusiness.2._____hesaidatthemeetingastonishedeverybodypresent3.________the2008OlympicGameswillbeheldinBeijingisknown.4.________we’llgocampingtomorrowdependsontheweather.5.________leavestheroomlastoughttoturnoffthelights.6.___isafactthatEnglishisbeingacceptedasaninternationallanguage.7.Itworriedherabit____herhairwasturninggrey.8.TheForeignMinistersaid,“__isourhopethatthetwosideswillworktowardspeace.”9.AfterYangLiweisucceededincirclingtheearth,____ourastronautsdesiretodoiswalkinspace.Ex2translation1.谁赢了比赛还不知道。_______________isunknown.2.他所说的话是真的。____________istrue. 3.我们要晚了，那是肯定无疑的。_______________iscertain.4.他去哪里还不清楚。______________isnotclear.5.很遗憾你不能来。____________youcan’tcome.HomeworkEnglishweeklypage4part3