高中英语《Unit4 Astronomy the science of the stars》教案（5）新人教版必修3-新人教版高一必修3英语教案VIP免费

Unit4theFifthperiodGrammarTeachinggoals教学目标1.Abilitygoals能力目标EnableSstounderstand“Nounclausesassubject”2.Learningabilitygoals学能目标EnableSstousethenounclausestomakesentences.Teachingimportantpoints教学重点引导主语从句的连词的掌握Teachingdifficultpoints教学难点a.it作形式主语的句型b.that和what引导主语从句时的用法区别c.whether和if引导主语从句时的用法区别Teachingcontent教学内容Whatpartdoestheunderlinedpartserveasineachsentence?Tofindyourwaycanbeaproblem.Smokingisbadforyou.“Howdoyoudo?”isagreeting.Whatshesaidisnotyetknown.Thatweshallbelateiscertain.Itiscertainthatweshallbelate.Wecanseefromthesesentencesthatasentenceservesassubject,sowecallitSubjectClause.主语从句（NounClausesastheSubject）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：what在从句中的作用为：作句子成分；除了起到引导从句的作用外还要承担具体的意义。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：that引导主语从句时，在句中具有“两不”原则：不作句子成分；没有实际意义。年级高一科目英语主备教师日期课题Unit4---Unit5课时参与人员当它引导的主语从句置于句首时，that不能省略；如果用it作形式主语，而把主语从句放在句末时，that可以省略。Thattheyarebadlyinneedofhelpisquiteclear.他们急需帮助，这是十分明显的。3)由whether引起的主语从句。如果主语从句置于句首，不能用if引导，此时，需用whether。但如果用it作形式主语，而把主语从句放在句末时，也可以用if引导。Whethertheywillsellthehouseisnotyetdecided.他们是否卖掉这所房子还没有决定。4)连接代词who,which,whom,whose有各自的具体意义，起连接作用，同时在从句中充当主语、宾语、表语、定语等；whoever,whatever,whichever在意义上更为强调，常译为“无论……”；连接副词when,where,why,how等也有各自的意义，起连接作用，并在从句中作状语。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……Itmustbepointedoutthat...必须指出……Ithasbeenprovedthat...已证明…….如:Itisbelievedthatatleastascoreofbuildingsweredamagedordestroyed.据信,至少有二十座楼房遭到破坏或彻底毁掉。4)用于Itisimportant/natural/necessary/impossiblethat...句型中,主语从句应使用虚拟语气,谓语动词用\“should+动词原形\”的形式,should有时有感情色彩。[高考链接]从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。1.Itremainstobeseen_____thenewlyformedcommittee’spolicycanbeputintopractice.(陕西2013)A.thatB.whichC.whatD.whether2._____IwanttotellyouisthedeeploveandrespectIhaveformyparents.(天津2013)A.ThatB.WhichC.WhetherD.What3._____makesthebooksoextraordinaryisthecreativeimaginationofthewriter.(北京2013)A.ThatB.WhatC.WhoD.Which4.Itisbynomeansclear_____thepresidentcandotoendthestrike.(2012大纲全国卷I)A.howB.whichC.thatD.whatKeys:DDBD教...