Unit5WorkingtheLandDiscoverUsefulStructures课件-高中英语人教版选择性2

SubjectClause主语从句Unit5DiscoveringUsefulStructuresObservethefollowingsentencesanddiscoverSubjectClauses.1、WhatYuanLongpingreallycaredaboutwasnotmoneyorcelebrity.2、ThatYuanLongpinghadrealisedhisdreamofseawaterricesurprisedthewholeworld.3、ItsurprisedthewholeworldthatYuanLongpinghadrealisedhisdreamofdevelopingseawarerrice.Presentation5.Tofindyourwaycanbeaproblem.

4.Smokingisbadforyou.1.Jakeworkshard.2.Theyarestudents.

3.Theoldshouldberespected.What’sthesubject?（什么是主语和主语从句？）6.Whatshesaidisnotyetknown.结论：☞主语是句子说明的人或事物，一般放在______。

☞从句在主句中充当

的从句叫做主语从句。主语从句是名词性从句的一种,在复合句中作主语,相当于名词。主语从句的位置可以在句首,也可以用it作形式主语,主语从句放在后面。连接词有从属连词，连接代词和连接副词句首主语从句的定义：主语用横线划出句子中的主语：Thatshesurvivedtheaccidentisamiracle.

她在事故中幸免于难简直是个奇迹。Whethertheplanwillbecarriedoutisstill

unknown.=Itisstillunknownif/whethertheplanwill

becarriedout.这个计划是否会实施还不知道。✳that_____成分，___意义，____省略。✳whether____成分，__意义，译为_____。✳从属连词引导主语从句只起引导作用，在主语从句中不充当任何成分。✳whether可置于句首和句中；if不可置于句首。可用it作形式主语，if引导的从句后置作真正主语。不做是否无不能不做有1.从属连词：that、whether、ifWhowillgoisunknown.➪who在主语从句中充当_____,译为___。Whatweneedismoretime.➪what在主语从句中充当_____,译为____。WhichbookIshallchoosehasn'tbeendecided.➪which在主语从句中充当_______,译为_______。Whoeverbreaksthelawwillbepunished.➪whoever在主语从句中充当_______,译为_______。2.连接代词:

who、whoever、whom、whose、what、whatever、which、whichever宾语什么主语谁主语无论谁定语哪一个Whenwewillleavehasn'tbeendecided.➪when在从句中充当_______,译为______。Wherethemeetingwillbeheldisnotknown.➪where在从句中充当_______,译为______。Whyhecriesisnotclear.➪why在从句中充当_______,译为_______。Howshekeepshealthyisasecret.➪how在从句中充当_______,译为_______。3.连接副词：when、where、how、why状语什么时候状语哪里状语为什么状语怎样1.Whetherthepatientwillbetaken

______unknown.单个从句做主语，大多数使用_______(单数？复数？)2.Whenandwherethepatientwillbetaken_____unknown.由两个连接词引导同一个主从，谓动使用____(单数？复数？)3.Whenthetaskcanbefinishedandwhether

hecanhavearest_____unknown.主语为and连接的两个主从时，谓动使用____(单数？复数？)4.Whathewantsmost____stayingwithhisfamily.

Whattheyneed_______masks(口罩).what在主从中做宾语时，谓语的单复数取决它后面的表语。主语从句一律用_____语序，即主语在前，谓语在后。单数is单数is复数areisare陈述1.主谓一致2.主语从句的语序注意123从属连词(不作成分）连接代词（作主,宾,表,定语）连接副词（作状语）what,who,whom,which,

whose,wh+everhow,when,where,whythat(无意义),whether（句首、中）/if（中）：是否Summary“缺什么补什么”原则缺主语，指人用____，指物用_____缺宾语，指人用________，指物用____缺时间状语用______；地点状语用______；原因状语用_____；方式状语用_____；定语用____________；什么都不缺用_______，缺“是否”_______whowhatwho/whomwhatwhenwherewhyhowwhich/whose主语从句的连接词怎么选？thatwhether“缺什么补什么”是指从句与连词之间的关系。Thatallcountriesworktogetherisimportant.

Itisimportantthatallcountriesworktogether.

主语从句为了避免头重脚轻现象,用it做_______，而把从句放在后面充当_________。真正的主语形式主语3.主语从句太长怎么办？1.It+be+形容词+主语从句

做......是......的形容词clear,obvious,likely,probable,true…例：1.Itisnotclearwhetherhetoldalie.2.It+be+过去分词+主语从句据......said,reported,believed,thought,announced…过去分词例：1.Itissaidthattheyareidenticaltwins.

✮此句型中的形容词是important,necessary等时，从句应使用虚拟语气例：Itisimportantthatwe(should)learnEnglishwell.

✮若过去分词是suggested,ordered,required,advised,requested等表示建议、要求、命令等词时，从句应该使用虚拟语气。例：Itissuggestedthatstudents(should)maketheirbedbythemselves.3.It+be+名词+主语从句做......是......的名词apity，anhonor，agoodidea，afact,a/nosurprise，nowonder......例：It

isapitythathemissedsuchaninterestingfilm,4.It+不及物动词+主语从句seem,happen,appear,look,occur,turnout…不及物动词例：It

happenedthattheywereoutthatday.碰巧那天他们不在家。

Itseemsthatitisgoingtorain.

看起来要下雨了。5.It+及物动词+宾语+主语从句及物动词worry,shock…例：Itshocksmethathefailedinthisexam.他没通过考试，震惊到我了。【即时演练】1.____isafactthatEnglish

isbeingacceptedasaninternationallanguage.2.Itisuncertain_______hecancometoJenny’sbirthdaypartyornot.3._______hemadeanimportantspeechatthemeetingwastrue.4._______isknowntousallthatAmericaisadevelopedcountry.5.Everyyear,_______makesthemostbeautifulkitewillwinaprizeintheKiteFestival.6.Yoursupportisimportanttoourwork.________youcandohelps.ItwhetherThatWhateverItwhoeverActivity2.MatchthesentencepartsandthentranslatethecompletedsentencesintoChinese.Payattentiontohowthesubjectsareintroduceddifferently._______remainsanunansweredquestion._______isanimportanttopicforustoresearch._______isthatthesechemicalsmayevencausecancer._______thesevegetablescanevenbeplantedwithoutanysoilthroughthisnewtechnology._______isthereasonwhysomepeopleprefertoliveinthecountryratherthaninthecity.WhatworriesmanypeopleThatthelifestyleisslowerandhealthier.Howwecanfindasuitablesolutiontoproducesufficientfoodwhilekeepingtheenvironmentsafe.Whenthesewheatfarmerswilljointhispilotexperiment.ItamazedallofusthatDCAEBActivity3Readthepassageandunderlineallthesubjectclauses.Theninpairs,discusswhetherthesentenceswithsubjectclausescanbeparaphrased.Grandmahasbeencomplainingaboutthevegetablessoldinthesupermarket,whichhavebeengrownusingchemicalfertilisers.Toher,thattheylookbeautifulontheoutsideis

obvious.However,whatsheisunhappyabout

is

thelowernutritionalvalueandreducedflavour.Nowthatbothofmygrandparentshaveretiredfromtheirjobsinthecity,howtheyaregoingtospendtheirretirementis

animportantdecisionforthem.

Whethertheycanliveahealthylifeis

thefirstthingtheyareconsidering.Sotheyhavemadeuptheirmindstomovetothecountryside,wheretheycanliveagreenlife.Activity4WhatqualitiesdoyouthinkmakeapersonlikeYuanLongpingsosuccessful?Workingroups.