Unit+5+Discover+useful+structures主语从句 高中英语人教版（2019）选择性必修第一册

主语从句(SubjectClause)一、学习目标：通过学习，让同学们掌握并熟练运用主语从句。二、学习重点：学生掌握主语从句的定义及引导词的用法。三、学习难点：学生能运用主语从句准确地翻译句子。1.Janeisgoodatplayingthepiano.2.Toseeistobelieve.3.Smokingisbadforhealth.4.Sevenarekilledintheaccident.5.Hewenttoschoolbybike.6.Whathehassaidistrue.

找出主语(名词)

（不定式）（动名词）(数词）(代词）(从句）WhatisSubjectClause?定义：在复合句，充当句子主语的从句叫主语从句。主语从句的连接词TheconjunctionsofSubjectClause主语从句的连接词：1)从属连词(conjunctions)：

that,whether2)连接代词(conjunctivepronouns)：

what,who,whom,which,whose,whatever,whoever,whomever,whichever3)连接副词(conjunctiveadverbs)：

where,when,why,how,wherever,whenever,however1Thathewillcomeiscertain.2Whetheritwillpleasethemisnoteasytosay.3Whatseemseasytosomepeopleseemsdifficulttoothers.4Whichsidewillwinisnotclear.5Whyhediditremainsamystery.6Whentheywillstartisnotknownyet.7Howhebecameagreatscientistisknowntousall.8Whowilltakepartinthemeetinghasnotbeendecided.9Whoeverbreaksthelawwillbepunished.10Wheresheisfromisunknown.找出下列句子的主语从句及连接词：主语从句连接词的选用Theuseoftheconjunctions一、从属连词that,whether1._______hecanwinisnotknown.2._______theboystudyhardmakestheteacherhappy.WhetherThat

总结that、whether的用法：that仅起____作用，____意义，在从句中____句子成分，____省略。whether表“____”的意思,____句子成分。____省略，不能用if替换。连接没有不作不能是否不作不能二、连接代词who,whom,what,whose,which

1.______makethemhappywasthattheypassedtheexam.2.______Ilikemostisyourhairstyle.3.______thegirlisremainsamystery.4.______moneywaslostisunknown.5.______bookIshallchoosehasn’tbeendecided.What

WhatWhoWhoseWhich总结连接代词的用法：what指物，在从句中常可作________________，表示“…的东西/样子/事情/话”who指人，在从句中常可作________________，作宾语时可用whomwhose常用作________which可作_______________，表示“哪一个”主语,宾语或表语主语,宾语或表语定语主语,宾语和定语三、连接副词when,where,why,how1.____theyleavetheclassroomhasn’tbeendecided.2.____it’ssostrangeisnotknown.3.____hekeepshealthyisasecret.4._________

the

meeting

is

to

be

held

has

not

yet

been

decided.WhenWhyHowWhere/When总结连接副词的用法：当主语从句中主语、宾语、表语具备，但是还是要表示疑问含义，可以判断句子中缺少状语，常常用相应的特殊疑问词引导，有when,where,how,why等，它们在表语从句中分别充当_____、_____、_____、_____状语，本身具有词义,不可省略。时间地点方式原因注意：疑问词+ever也可引导主语从句，但不含疑问，往往含有强调作用，意思是“无论…”如：whoever

无论谁whatever

无论什么whichever

无论哪个whenever无论什么时候wherever无论哪里……它们在句子中担任成分，不能省略，语序为陈述语序_______seesthegirlisattractedbyher.Whoever

it作形式主语一般来说主语从句都是放在

,但有时为了使句子

,避免”头重脚轻”,常用

作

，从而把主语从句(通常是that引导的主语从句)放在

．that不能省略。常见句型为：

句首保持平衡

it

形式主语后面(1)It+be+形容词(true,necessary,likely,stranger,important,obvious,possible,certain…)+that从句__________________

somethinghasgonewrongwithmyphone.可能我的手机出故障了。___________________hewasnotsatisfiedwithmyanswer.很明显他对我的回答不满意。It'spossiblethatItwasobviousthat【注意】Itisnecessary/important/strange/natural+that从句,常用虚拟语气,即从句谓语用“(should)+动词原形”。__________________you______________yourvocabulary.你有必要扩大你的词汇。________________he____________thingslikethat.很奇怪，他竟然做那样的事。Itisnecessarythat(should)enlargeItisstrangethat(should)

do(2)It+be+名词词组

(nowonder,anhonor,apity,agoodthing,nosurprise,ashame…

)

+

that从句_______________youmissedthemeetingheldlastnight.很遗憾你错过了昨晚举行的会议。____________________ourteamhaswonthegame.我们队赢得这场比赛不足为奇。It'sapitythatIt'snosurprisethat(3)It+be+过去分词(said,believed,reported,thought,suggested,expected,announced,decided,arranged…)+that从句_______________hehasgoneabroadforfurtherstudy.据说他出国进修了。_________________nopassengerswereinjuredintheaccident.据报道,没有乘客在这次事故中受伤。It'ssaidthatIt'sreportedthat此句型中，当过去分词是suggested,advised,ordered,requested,required等表示建议、要求、命令等的词语时，从句要用虚拟语气,即谓语用“(should)+动词原形”。_________________thesportsmeet____________putoff.有人建议推迟运动会。_________________allthestudents__________________theirmobilephonesintotheclassroom.要求所有学生都不能把手机带进教室。【注意】Itissuggestedthat(should)beItisrequiredthat(should)nottake(4)It+不及物动词或系动词(happen,seem,appear,occur…)

+that从句__________________

Iforgottoturnoffthelight.我突然想到我忘了关灯。(5)It+及物动词(surprise…)

+宾语+that从句__________________

hefinishedtheworkintime.他及时完成了工作，真让我吃惊。ItoccurredtomethatItsurprisedmethat

it作形式主语的常用句型

It’scertainthat…肯定…Itispossiblethat...很可能……Itisobviousthat…很明显…Itisnecessarythat…有必要…Itisapitythat...可惜的是……Itisafactthat…事实是…Itiscommonknowledgethat……是常识Ithappenedthat...碰巧……Itseemsthat…似乎，好像…Itstruck/hitsb/occurredtosbthat…某人突然想到……Itissaidthat...据说……Itisknowntoallthat...众所周知……Itisreportedthat...据报道……Itisbelievedthat...据相信…;人们相信…Itissuggestedthat...建议……Itcannotbedeniedthat…不可否认……

1、Thatwecan’tgotoseethemovieontheweekendisapity.2、ThatTaiwanispartofChinaisknowntoall

.It

isapity

that

wecan’tgotoseethemovieontheweekend.

It

is

knowntoall

that

TaiwanispartofChina

.

用it作形式主语来改写下面的句子?1.Howwashesuccessfulisstillapuzzle.()

Howhewassuccessfulisstillapuzzle.()2.Whatdoesheneedismoney.()

Whatheneedsismoney.()主语从句的语序———

判断下列句子哪个正确陈述语序3.Whenwillhecomeisnotknown.（）

Whenhewillcomeisnotknown.（）主语从句的规律：

找出下列句子中的错误，并总结规律例1.Whenwillhecomeisnotknown.规律一、主语从句一律用_________，

即_______在前，_______在后。正：Whenhewillcomeisnotknown.陈述语序主语谓语主语从句的规律：

例2.Hewillnotcometothemeetingthiseveningistrue.正：Thathewillnotcometothemeetingthiseveningistrue.规律二、连词____在从句中无实际意义，

但_____省略。that不能主语从句的规律：例3.Ifthemeetingwillbeputoffhasnotbeendecidedyet.正：Whetherthemeetingwillbeputoffhasnotbeendecidedyet.规律三、_______可以引导主语从句，放在句首，但____不能。whetherif主语从句的规律：

例4.

Thatwhetherhewillhelpothersisafact.正：Thathewillhelpothersisafact.规律四、主语从句中的____不能重叠使用。连词主语从句的规律：例5.

Whenhewillcomeareapuzzle.正：Whenhewillcomeisapuzzle.规律五、含主语从句的主句谓语动词多用_________________。第三人称单数形式主语从句的规律：1.Whatheneedsisthatbook.2.Whatheneedsissomebooks.规律六、what引导的主语从句，可根据

____决定主句动词的单复数形式。表语are规律七、主语从句为了避免头重脚轻现象，用____做_________，而把主语从句放在后面。

例7Thattheearthturnsaroundthesunisknowntoall.

Itisknowntoallthattheearthturnsaroundthesun.it形式主语翻译

1．____________________(谁将去接他)isnotdecided.2．________________________________(他能否买到飞机票)doesn’tmattermuch.3．_____________________(我们如何去那里)isaquestion.4．________________________(你刚才告诉我的)wasreallyasurprise.5．Itisclear___________________(他是一个乞丐).WhowillpickhimupWhetherhecanbuytheplaneticketHowwewillgothereWhatyoutoldmejustnowthatheisabeggar

看从句中缺少什么成分，根据意思选择适当连接词语；如不缺成分且句意完整，则选用that.一找二查三选：从句：有没有缺少成分，缺少什么成分：意思适合的连接词连接词选择总原则：1.________heattendedthemeetingornotwasn’tquiteclear.2.________teamwillwinthematchisstillunknown.3.________comestotheactivitywillreceiveapresent.4.________hefiguredoutawaytosolvetheproblemsuccessfullysurprisedusall.5.Weusuallythink________wecan’tgetseemsbetterthanwhatwehave.WhetherWhichWhoeverThatwhat一、用适当的连接词填空6._________wedoistoservethepeople.7._________theywillcomehasn’tbeenmadepublic.8._________surprisedmemostwas_________thelittleboydidsowellinthecompetition.9.Itis_________(report)thattheriverhasbecomeclearandclean.WhateverWhenWhatthatreported用合适的连接词(引导词)填空

MynameisTom.Iamhappytointroducemyselftoyou.(1)______IlikemostaresportsandEnglish.IalsolikemakingfriendsandIamreadytohelpothers.Inmyopinion,(2)______youcansucceedinlifemai