主语从句讲解

整理文档很辛苦,赏杯茶钱您下走!

免费阅读已结束,点击下载阅读编辑剩下 ...

阅读已结束,您可以下载文档离线阅读编辑

资源描述

SubjectClauses主语从句GrammarWhatpartdoestheunderlinedpartserveasineachsentence?Atreehasfallenacrosstheroad.Youareastudent.Tofindyourwaycanbeaproblem.Smokingisbadforyou.“Howdoyoudo?”isagreeting.Whatshesaidisnotyetknown.Thatweshallbelateiscertain.Whetherhewillgothereisnotknown.Howwecanhelpthetwinswillbediscussedatthemeeting.定义:用作主语的从句叫主语从句,它是名词性从句之一。引导主语从句的连接词有:从属连词:that,whether;连接代词:who(whoever),whom,whose,what(whatever)和which(whichever);连接副词:when,where,how和why。1.连接词:1)从属连词:that,whether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,that本身无实际意义,但不能省略.whether意为“是否”,放在句首句末皆可。Thatpricewillgoupiscertain.Thathewillcomeiscertain.Whetherwegobytrainorbyboatmakesnodifference.Whetherhe’llcomehereisn’tclear.2)连接代词who(whoever),what(whatever),which(whichever),whom,whose.Whichsidewillwinisnotclear.Whowillwritethepoemhasnotbeendecidedyet.Whateverhedidisright.Whokilledthescientistremainsaquestion.Whomsheborrowedmoneyfromstillpuzzledhim.3)连接副词when,where,how,why等。Howthishappenedisnotcleartoanyone.Whenhewillbebackdependsontheweather.Whenwe’llstarttomorrowwillbetoldsoon.Wherethetestwillbegivenisnotyetdecided.Makesentences:It’scertain.we’llbelate.Ishecomingornot?Wedon’tknowWhatdoeshewanttotellus?Wedon’tknowWhenwillyoucomeback?Itdoesn’tmatter.It’scertainthatwewillbelate.Thatwe’llbelateiscertain.Wedon’tknowwhetherheiscomingornot.Whetherheiscomingisnotknown.Wedon’tknowwhathewantstotellus.Whathewantstotellusisnotknown.Whenyouwillcomebackdoesn’tmatter.Itdoesn’tmatterwhenyouwillcomeback.主语从句后置!为了避免主语冗长,句子头重脚轻,经常用it作形式主语,主语从句放在后面作真正的主语.例:Thatweshallbelateiscertain.--It’scertainthatweshallbelate.1.Thattheearthisroundisknowntoall.--2.Thatyoumissedthechanceisapity.--Itisapitythatyoumissedthechance.It’sknowntoallthattheearthisround.A.It+be+形容词+that从句(obvious,true,surprising,good,wonderful,funny,possible,likely,certain,probable,etc.)如:Itiscertainthatshewilldowellinherexam.B.It+be+名词词组+that从句(anhonour,afact,apity,etc)如:It’sapitythatwecan’tgo.2.用it作形式主语的结构C.It+be+过去分词+that从句(said,reported,thought,expected,decided,announced,etc。)如:ItissaidthatMr.GreenhasarrivedinBeijing.D.It+不及物动词或短语+that从句(seem,happen,doesn’tmatter,turnout)。如:IthappenedthatIwasoutthatday.Itdoesn’tmatterwhethershewillcomeornot.1)主语从句在句首时,必须由连接词引导,不能省略这些连接词。误:Theyshouldlikeeachotherisnatural.2)如果主语从句放在句首,不能用if引导,但是如果用it做形式主语,而把主语从句放在句末时,也可以用if引导.误:IfMaryreallyheardhimisreallydoubtful.注意正:Thattheyshouldlikeeachotherisnatural.Itisnaturalthattheyshouldlikeeachother.正:WhetherMaryreallyheardhimisreallydoubtful.ItwasdoubtfulifMaryreallyheardhim.1.Whatyouleftareonlyseveraloldbooks.2.Whatyousaidisofgreatimportance.3)主语从句中用陈述语序,后面的谓语动词用第三人称单数4)“what”引导主语从句时,谓语动词:常与其后的名词作表语一致,且根据句子的语境而定。eg:5).用于Itisimportant/natural/necessary/impossiblethat...句型中,主语从句应使用虚拟语气,用“should+动词原形”的形式,should有时可以省略。6).在It+be+suggested/advised/ordered/requested/insisted/required中,that从句的谓语也应该用“should+动词原形”的形式,should有时可以省略。1.Whereshallwespendtheholidayisn’tdecided.2.Youhavemadeamistakeisafact.3.Thatiscertainthatwecanwin.4.Nomatterwholeavestheroomlastoughttoturnoffthelights.5.Ifthepolicemenwillcomeisnotcertain.weshallThatyouhaveItisWhoeverwhether改错练习6.Itissaythathewasafamouswriter.7.Itisseemedthatitisgoingtorainsoon.8.Thatisfactthatshewonthefirstplace.9.Wholeavestheroomlastoughttoturnoffthelights.10.Itisimportantthatastudentlearnsaforeignlanguage.saidseemsItisafactWhoevershouldlearn1.___hemadeanimportantspeechatthemeetingwastrue.A.ThatB.WhyC.WhatD.How2.___we’llgocampingtomorrowdependsontheweather.AIfBWhetherCThatDWhere3.___isknowntousallthatAmericaisadevelopedcountry.AWhichBAsCWhatDIt4.It’sknowntousall___aformofenergy.A.waterisB.thatwaterisC.iswaterD.thatwaterto5.Itworriedherabit___herhairwasturninggray.A.whetherB.thatC.whatD.when6.WhatIsayandthink___noneofyourbusiness.A.isB.areC.hasDhave

1 / 17
下载文档,编辑使用

©2015-2020 m.777doc.com 三七文档.

备案号:鲁ICP备2024069028号-1 客服联系 QQ:2149211541

×
保存成功