主语讲解及练习课件.ppt

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1、subjectGrammarReviewthesubject主语是一个句子的主题，是句子所诉说的主体。它的位置一般在句首,谓语的前面。可以用做主语的有单词、短语、甚至句子。什么词性可以充当主语？Atreehasfallenacrossthestreet.Thehonorablepresidentisarriving.Cindylikesthatpairoftrousersalot.Youareamiddleschoolstudent.Helentmehisnewbike.名词作主语。2.代词作主语。Theyliveonabusymainroad.______mustbeveryn

2、oisy.ThereB.ItC.ThatD.TheyB_________comesfromGermanybutshecouldn’tspeakGerman.A.WeB.AlexC.TheyD.MaryDThreeisenough.Fiveandelevenequalssixteen.Twelvetimesthreemakesthirty-six.Thirteenminusnineisfour.Fifteendividedbythreeequalsfive.＋and/plus－minus×times÷dividedby=is/equals/makes3.数词作主语。Tofindth

3、etruthisverydifficult.Togetgoodgradesiseasyforme.Toloveandtobelovedisthegreatesthappinessintheworld.Tohesitatemeansfailure.（1）动词不定式作主语视为单数，谓语用单数形式4.动词不定式作主语。（2）动词不定式做主语过长，为了避免头重脚轻，用it代词做形式主语，真正的主语动词不定式后置Tofindthetruthisverydifficult.Itisverydifficulttofindthetruth.Togetgoodgradesiseasyforme.I

4、tiseasyformetogetgoodgrades.Toloveandtobelovedisthegreatesthappinessintheworld.Itisthegreatesthappinessintheworldtoloveandtobeloved.Tohesitatemeansfailure.Itmeansfailuretohesitate.Smokingisbadforyourhealth.Seeingisbelieving.（眼见为实。）Doinglotsofexerciseisgoodforhealth.Savingmoneyisagoodhabit.5.动

5、名词作主语只有出现下面这三种句型时，才可以用it代替动名词做形式主语Itisnogoodnouseawasteoftimedoingsth++Itisnousereadingsofast.读那么快没用。Itisawasteoftimeregrettingforthepast.为过去而悔恨是浪费时间。Itisnogoodspendingsomuchmoney.花那么多钱不好。Itisnogoodhopingforothers’help.期许别人的帮助无益。Therichshouldhelpthepoor.Theoldandtheyoungwalkedsidebyside.Thedi

6、sabledareunlucky.Thewoundedneedourhelp.6.The+adj./p.p.作主语。名词化的过去分词短语the+P.P.thedisabled残疾人thewounded伤者The+adj.名词化的形容词短语theblind瞎子thedeaf聋子thedead死者theliving活着的人thepoor穷人thedumb哑人7.句子做主语构成主语从句Wheneveryoucomewillbefine.Thattheoldneedhelpisnotdoubtful.ThatheisfromBeijingisknowntous.Whathewantsis

7、mymoney.Whattheyaresellingareuselessthings.Whenweshallstartisalreadydecided.HowyouwillgotoBeijinghasn’tbeendecidedyet.句子做主语太长，为了避免头重脚轻，用it做形式主语，真正的主语后置。What引导的主语从句除外。Wheneveryoucomewillbefine.Itwillbefinewheneveryoucome.Thattheoldneedhelpisno