高中英語主語從句

主語從句2021/5/91Whowillwinthematchisstillunknown.Iwanttoknowwhathehastoldyou.Thefactisthatwehavelostthegame.Thenewsthatwewonthegameisexciting.主語從句賓語從句表語從句

名詞性從句的作用相當于名詞，因此主語從句、表語從句、賓語從句和同位語從句分別作主句的主語、表語、賓語和同位語。同位語從句2021/5/92NounClauses(名詞性從句)SubjectClause(主語從句)AppositiveClause（同位語從句）ObjectClause（賓語從句）PredicativeClause（表語從句）2021/5/93Grammar3.Tofindyourwaycanbeaproblem.

2.Smokingisbadforyou.1.Youareastudent.4.“Howdoyoudo?”isagreeting.5.Whatshesaidisnotyetknown.6.Thatweshallbelateiscertain.7.Itiscertainthatweshallbelate.Subject（主語）AsentenceservedassubjectiscalledSubjectClause.2021/5/94主語從句定義：主語從句是在復合句中充當主語的從句，通常放在主句謂語動詞之前或由形式主語it代替，而本身放在句子末尾。導主語從句的有連詞that，whether，連接代詞who，what，which，連接副詞when，where，how，why等。2021/5/951）從屬連詞：that，whether等.that

引導主語從句只起引導作用，本身無實際意義，在主語從句中不充當任何成分，但不能省略。

Thatpeoplecutdowntoomanytrees

destroyedthebalanceofnature.Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved.2021/5/96.Itwasnotclearwhether

thesolidshapewouldlastornot.SubjectClauseSubjectFormedSubjectWhetherthesolidshapewouldlastornotwasnotclear.Real引導主語從句在句首只能用whether,有it作形式主語的whether/if都可以.Conclusion:ifIf×2021/5/97

注意:

由that引導的主語從句有時為了使句子結構平衡,避免“頭重腳輕”,常用it

作形式主語,而把從句放在后面。例如:

1.That

hewillrefusethispieceofadviceisimpossible.______________________________________________________________________________2.Thattheyshouldlikeeachotherisnatural._____________________________________*it為形式主語Itisnaturalthattheyshouldlikeeachother.Itisimpossiblethathewillrefusethispieceofadvice.2021/5/98這樣就構成了下面一些常用句型:

1)Itis+n.+從句

Itisapity/shamethat...遺憾的是……

Itisasurprisethat…令人驚奇的是…

Itisafactthat……是事實

Itiscommonknowledgethat……是常識*_______________(很遺憾)welostthematch.*______________(這是事實)hecheatedintheexam.ItisapitythatItisafactthat2021/5/992)Itis+adj.+從句

It’scertainthat…肯定…

Itispossiblethat...很可能……

Itisunlikelythat...不可能……Itisobviousthat…很明顯…Itisnecessary\important\natural\...that…*_________________(很可能)shewillcomebacktomorrow.*_________________(很明顯)thismeasureiseffective.+(should)+do…ItispossiblethatItisobviousthat2021/5/910主語從句的虛擬語氣①表“應該，驚訝、惋惜、遺憾”等意義Itis

important/natural/necessary/impossible/strange

that...

謂語形式為:should+V.原形

,should可省略。

eg.很奇怪，他竟沒有來。

Itisstrangethat___________________.

我們做足夠的運動很重要。重要的是我們應該做足夠的運動

Itisimportantthatweshoulddoenoughsports.※heshouldnotcome2021/5/911②表示“據(jù)建議、據(jù)要求、據(jù)命令”It+be+suggested/advised/ordered/requested/commanded/insisted/requiredthat…謂語形式:should+V.原形

,should可省略.據(jù)命令，所有乘客必須接受搜查

___________________allthepassengers_____________________.Itwasorderedthat(should)besearched2021/5/9123)It+不及物動詞+從句

Ithappenedthat...碰巧……

Itoccurredtomethat…我突然想起…*________________(剛好)Icameintotheofficeatthattime.*____________________(我突然想起)Iforgettosenttheletter.IthappenedthatItoccurredtomethat2021/5/9134)It+be+過去分詞+從句Itissaidthat...據(jù)說……

Itisknowntoallthat...眾所周知……

Itisreportedthat...據(jù)報道……

Itisbelievedthat...據(jù)信……;人們相信……

Itissuggestedthat+(should）do...建議……Itmustbeadmittedthat…必須承認……Itcannotbedeniedthat…不可否認……

Itmustbepointedoutthat…需指出的是……

*___________________(據(jù)報道)20peoplewerekilledintheaccident.*______________________(建議)weshouldeatmorevegetableanddomoreexercise.ItisreportedthatItissuggestedthat2021/5/9145)“無關緊要（的是）”

Itdoesn’tmatterItmakesnodifference翻譯：一個人是否富有無關緊要

_____________________oneiswealthyornot.Itdoesn’tmatterwhetherItmakesnodifferencewhether+主語從句2021/5/915：Theyshouldlikeeachotherisnatural.：Thattheyshouldlikeeachotherisnatural.：Itisnaturalthattheyshouldlikeeachother.：IfMaryreallyheardhimisreallydoubtful.：ItwasdoubtfulifMaryreallyheardhim.TorFquestions2021/5/9162.連接代詞who，what，which,whatever,whichever,whoever

What

manyscientistsbelieveisthatthecontinuedpresenceofwater…Whowilltakepartinthemeeting

hasnotbeendecided.Whoeverbreaksthelaw

willbepunished.Whichstudentwillwinthefirstisuncertain.2021/5/9173)連接副詞when，where，how，why等。Why

theysuddenlydisappearedstillremainsamystery.When

theywillsetoffisnotdecided.Where

sheisfromisunknown.How

wewillpaintthehousehasnotbeendecided.2021/5/918Completethesentencesusingwhat,whether,where,when，who,why,how

or

that.1.(_____isneededforsuccess)isyourhardwork.3.(

wewillgotomorrow)hasn’t

beendecidedyet.2.(

theywillarrive)hasbeentoldtotheteacher.WhatWhen/HowWhere/whether2021/5/9194.(______canjoininthesportmeet)isdecidedbytheteacher.5.(________itwillrainornot)isnotclear.7.(______theearthisasolidball)isknowntousall.WhoWhetherThat6.(____theearthisbecomingwarm)isagoodtopicforresearch.Why主語從句作主語時，謂語動詞一般用單數(shù)形式。Conclusion:2021/5/920用that/whether/if//where/how/when/why/who/what/which/howmuch/etc.

來連接主語從句.Summary:SubjectClause3.引導主語從句在句首只能用whether,有it作形式主語的whether/if都可以.2.That在主語從句中不能省略.4.有時為了使句子結構平衡,避免“頭重腳輕”,常用

it作形式主語,而把從句放在后面.4種句型。5.主語從句作主語時，謂語動詞一般用單數(shù)形式。2021/5/921注意二：Whoever(無論誰)=anyone/anybodywho（誰）

____leavestheroomlastoughttoturnoffthelights.A.Anyone

B.ThepersonC.Whoever

D.Who2021/5/922注意三：“疑問詞+ever”引導主、賓、表、狀語從句“Nomatter+疑問詞”只引導狀語從句無論誰違反法律將會受到處罰__________________willbepunished.______________________,hewillbepunishedWhoeverbreakslawsNomatterwhobreakslawsWhoeverbreakslaws主語從句狀語從句逗號是狀語從句的標志無論…2021/5/9232.

_______theycansolvethequestionisstillunknown.A.IfB.WhichC.WhetherD.What3._____hesaidatthemeetingastonishedeverybody.A.WhyB.WhatC.ThatD.Who4.____isafactthatEnglishisacceptedasaninternationallanguage.A.ThereB.ThisC.ThatD.It1._____weneedmorepracticeisquiteobvious.A.WhatB.ThatC.WhenD./2021/5/924

Pickuponenumberandfinishthetaskinit,thenyoucangetsomepoints.GameTime!1234567891011121314151617181920212223242526272829302021/5/925Correctornot?*Whenthemeetingwillbeheldhaven’tbeenknownyet.…………….beheldhasn’tbeenknownyet.×Payattention:主語從句的謂語用單數(shù)形式

102021/5/926

thecatdomade

Whatthecatdidmadethebabycry.WhatcryMakeasentence302021/5/9271.Thequestionis________thefilmisworthseeing.2.________weshallattendthemeetinghasn'tbeendecidedyet.用whether\if填空whetherWhether102021/5/928Translatethesentence*_______________________________(他們很需要幫助)isquiteclear.Thattheyarebadlyinneedofhelp202021/5/929talkabouttheuseofcellphone

Whattheyaretalkingabout

istheuseofcellphone.Makeasentence302021/5/930*

Ifwewillhaveameetinghasn’tbeendecidedyet.×Correctornot?Whetherwewill………….decidedyet.Payattention:放在名詞性從句句首，表示“是否”，只能用whether,不能用if102021/5/931Translatethesentence*Itisknowntous_______________________________________(馬克.吐溫怎樣成為一位偉大的作家).

howMarkTwainbecameagreatwriter202021/5/932

report,getthehighestpoints,match

ItisreportedthatYa