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1、周晨——名詞性從句高中名詞性從句專題講解1.名詞：表示人或事物的名稱的詞叫名詞。2.名詞的句法作用：名詞在句中主要作主語、賓語、表語和同位語。另外還可以作定語、狀語。3.名詞性從句：在英語的句子結(jié)構(gòu)中，本來該由名詞充當(dāng)?shù)闹髡Z、賓語、表語和同位語，由一個句子來充當(dāng)，這個句子就叫名詞性從句。4.名詞性從句的種類：根據(jù)名詞性從句在句子中所充當(dāng)?shù)牟煌煞?，名詞性從句可以分為主語從句、賓語從句、表語從句和同位語從句。主語從句：一、主語從句的連接詞1.連接詞:that,whether(1).Thathewillwiniscertain.(2).I
2、thasbeenreportedthatsalesofbeefinChinawillincrease.(3).Whetherweshallraiseducksorgeeseremainstobedecided.(4).Whetherhe’lljoinusinthediscussionisofgreatimportance.2.連接代詞:who,whom,whose,what,which,whoever,whatever,whichever(1).Itisclearwhoisafraidofhavingachangeinlandowne
3、rship.(2).Whosebagitiscannotbetold.(3).WhatIndianeedsisalawtomakelandownershipfairer.(4).Itisnotyetdecidedwhichcashcropwillbeproducednextyear.(5).Whateverhesaidwasright.(6).Whoevergotheremustgetreadyby6o’clock.3).連接副詞:when,where,why,how,howmany,howmuch,howlong,howsoon,h
4、owoften(1).Whenwe’llstarttomorrowwillbetoldsoon.(2).Wherewecanbuyoxenissomethingweneedtofindout.(3).Whyhecamehereisnotknown.(4).Howwecanprotectthegrainfromdampneedstobediscussed.(5).Howmanypeoplediedfromstarvationthatyearwillneverbeknown.(6).Howoftenhe’llgotoseehisgrand
5、motherdependsonthetimehecanspare.二、注意點(diǎn)1.主語從句一律用陳述句語序,即主語在前,謂語在后.例:正:Whenhewillcomeisnotknown.誤:Whenwillhecomeisnotknown.2.連接詞that在從句中無實(shí)際意義,但不能省略.例:正:Thathewillnotcometothemeetingthiseveningistrue.誤:Hewillnotcometothemeetingthiseveningistrue.3.whoever,whatever,whichever等
6、可以引導(dǎo)主語從句,但nomatterwho,nomatterwhat等不能.4.為避免主語冗長,句子頭重腳輕,經(jīng)常用it作形式主語,主語從句放在后面作真正的主語.Itiswellknown/reported/thought/said/…that…Itisclear/necessary/certain/doubtful/…that…周晨——名詞性從句Itisapity/ashame/anhonour/…that…Itdoesn’tmatterwhether…/Itseemsthat…Ithappensthat…※it作形式主語和it引導(dǎo)
7、強(qiáng)調(diào)句的比較It作形式主語代替主語從句，主要是為了平衡句子結(jié)構(gòu)，主語從句的連接詞沒有變化。而it引導(dǎo)的強(qiáng)調(diào)句則是對句子某一部分進(jìn)行強(qiáng)調(diào)，無論強(qiáng)調(diào)的是什么成分,都可用連詞that。被強(qiáng)調(diào)部分指人是也可用who/whom。例如：Itisapitythatyoudidn’tgotoseethefilm.Itdoesn’tinterestmewhetheryousucceedornot.Itisinthemorningthatthemurdertookplace.ItisJohnthatbrokethewindow.※用it作形式主語的結(jié)構(gòu)(
8、1)Itis＋名詞＋從句Itisafactthat…事實(shí)是…Itisanhonorthat…非常榮幸Itiscommonknowledgethat…是常識(2)Itis＋形容詞＋從句Itisnaturalthat…很自然
