一年級英語-必修三TheSubjectClause

Nounclausesas

thesubject主語從句人教版高中英語必修三第四單元trevor2019-04-0132Contents定義

引導詞

注意事項

1主語從句Subject1.定義找出主語1).Atreehasfallenacrosstheroad.2).Youareastudent.3).Tofindyourwaycanbeaproblem.4).Smokingisharmfultoyou.

主語從句(SubjectClause):在句子中充當主語的從句,且通常位于居首。1.定義1).Thathewillsucceediscertain.2).Whetherhewillcomemakesnodifference.3).Whatweneedismoretime.找出主語從句Tip1:先找主句謂語1.定義練習：請找出下列句子中的主語從句

1).Whatheislookingforisnoneofyourbusiness.2).Whentheplaneistotakeoffhasnotbeenannounced.

3).Wherehehasgoneisnotknown.4).Thathewaslateforschoolwastrue.2.引導詞-_____在從句中不做成分，起連接作用，本身無意義，不能省略但主句內容表肯定。whether不做成分，起連接作用，內容是“______”不能省略但主句意思表不確定。that是否(1)Thathewillcomeiscertain.(2)Whetherhewillcomeisuncertain.1）從屬連詞that和whether：

從屬連詞2.引導詞-從屬連詞(1)________hemadeanimportantspeechatthemeetingwastrue.(2)________we’llgocampingtomorrowdependsontheweather.(3)_________theywillsellthehouseisnotyetdecided.(4)________shecouldcometohelpusmadeusveryhappy.練習：填空-從屬連詞ThatWhetherThatWhether2.引導詞-連接代詞Whowillgomakesnodifference.Whatweneedismoretime.WhichbookIshallchoosehasn’tbeendecided.2)連接代詞who,what,which，whoever(無論誰)（=anyonethat）,whchever,whatever...連接代詞引導主語從句，在從句中可以作主語、賓語、表語或定語。

另外，wh-ever引導主語從句時，含有“無論……”之意，泛指任何一個，其引導從句時無疑問意義；而wh-多有疑問意義。whoevercomestoourschooliswelcome.Whateverisworthdotingatallisworthdoingwell.2.引導詞-連接代詞（1）

________willhostthemeetinghasn'tbeendecided.（2）

________comestoourschooliswelcome.（3）

________sidewillwinisnotclear.（4）__________Ihaveisyours.練習：填空-連接代詞WhoWhoeverWhichWhatever2.引導詞-Whenwewillleavehasn’tbeendecided.Howshekeepshealthyisasecret.Whyhecriesisnotclear.Wherethemeetingwillbeheldisnotknown.3)連接副詞when,where,how,why連接副詞引導主語從句并在從句中作狀語。連接副詞2.引導詞-連接副詞1）.________hedidn'tcomeyesterdayisstillunknown,2）._______

_wewillsetupthefactoryshouldbediscussed.3）.________thishappenedisnotclear.4）_____Jacklookedsoexictedisnotclear.WhyWhy/HowWhen/Where練習：填空-連接副詞why2.引導詞主語從句中引導詞的選擇標準：根據(jù)主語從句中成分是否缺失和主句意義是否完整來選擇相應的引導詞Tip2總結：3.注意事項1).從句用陳述語序Whyhediditremainsamystery.

_________inamillionyearsisnotknowntous.A.whatmanwilllooklike

B.whatwillmanlooklikeC.manwilllooklikewhat

D.whatlookwillmanlike與別的名詞性從句一樣，主語從句必須用自然語序。由于從句不能倒裝，所以答案只能選A項。同時還須注意，從句的引導詞必須始終置于句首。3.注意事項Itiscertainthathewillwinthematch.Thathewillwinthematchiscertain.

注解：一般來說主語從句都是放在

,但有時為了使句子

,避免”頭重腳輕”,常用

作

，從而把主語從句放在

．

句首保持平衡

it

形式主語后面2).主語從句中用it作形式主語的結構3.注意事項3).whether/ifwhether可以放句首引導主語從句或者和ornot連用,不做成分，且不能省略。

if不能在句首引導主語從句，如果用形式主語it,引導詞可以是if。_________hewillcomeornotisstillaquestion.__________theywillsellthehouseisnotdecidedyet.Itisnotdecidedyet__________theywillsellthehouse.WhetherWhetherWhether/if3.注意事項(1).單個主語從句做主語時，主句謂語動詞用單數(shù)。eg:Whenwewillholdoursportsmeeting_____notbeendecidedyet.(2).由兩個或者多個引導詞引導單個主語從句時，主句謂語動詞用單數(shù)。eg:Whenandwherewewillholdoursportsmeeting____notbeendecidedyet.4).從句做主語時，主句謂語動詞的單復數(shù)hashas3.注意事項what和who引導主語從句時，主句謂語動詞的數(shù)應該與主句中做表語的名詞保持一致。WhatIneed____money.WhatIneed____books.4）和表語一致的情況isare(3).由and連接兩個或兩個以上主語從句做主語時，主句謂語動詞用復數(shù)。eg:Whentheywillstartandwheretheywillgo______notbeendecidedyet.(have32總結：定義

引導詞

注意事項

1主語從句Subject找主句謂語動詞主語從句的意義和在從句中充當?shù)某煞株愂稣Z序、it充當形式主語、whether和if區(qū)別鞏固練習1.(_____isneededforsuccess)isyourhardwork.2.(__________theywillarrive)hasbeentoldtotheteacher.3.(_____canjoininthesportmeet)isdecidedbytheteacher.4.(________itwillrainornot)isnotclear.6.(______theearthisasolidball)isknowntousall.WhatWhen/HowWhoWhetherThat5.