主语和主语补足语I.充当主语的成分1.名词：Ourschoolisnotfarfrommyhouse.2.代词:Welikeourschoolverymuch.3.数词:Twoplustwoisfour.4.名词性或名词化的词、词组或短语:Themotherwithherchildiscomingtotheschool.5.动名词:Seeingisbelieving.6.动词不定式:Itwouldbeexcitingtowatchthebaseballgames.7.名词化的过去分词Thedisabledaretoreceivemoremoneyandsocialcares.8.从句Thathefinishedwritingthecompositioninsuchashorttimesurprisedusall.Whetherwewillgoforanoutingtomorrowremainsunknown.Itiscertainthathewillwinthematch.Ⅱ.带有逻辑主语的主语Thechildren’swantingthatsurprisedme.Thechildrenwantingthatsurprisedme.Threesuchrascalshangedinonedayisgoodworkforsociety.FormetobackoutnowwouldbetoacknowledgethatIamafraid.Itisnecessaryforhimtoreturnthebookimmediately.Ⅲ.状语形式作主语Betweensixandsevenwillsuitme.Justoverthebridgeiswhereyou’llfindit.Nowwillbethetime.Outsideisveryquiet.BecauseSallywantstoleavedoesn’tmeanthatwehaveto.Ⅳ.主语+be+补语补语=表语补语表示确认意义(可以互换)Deborahismybestfriend.MybestfriendisDeborah.WhatIneedisagoodcomputer.AgoodcomputeriswhatIneed.Myfavoritesportisswimming.Swimmingismyfavoritesport.Thepurposeoftheinstructionistomakeiteasyfornewcomerstofindtheirwayaroundthecity.Tomakeiteasyfornewcomerstofindtheirwayaroundthecityisthepurposeoftheinstruction.TworeasonsforvisitingNewYorkaretoseethestatueofLibertyandtotakepicturesfromthetopoftheEmpireStateBuilding.ToseethestatueofLibertyandtotakepicturesfromthetopoftheEmpireStateBuildingaretworeasonsforvisitingNewYork.表示特征意义(一般不能互换)Climbinghillsisgoodexercise.ThishatistherightsizeHisbrotherisasailor.Ⅴ.主语+补语Howcouldyoubesospiteful,andheryourbestfriend?=seeingthatsheisyourbestfriendTheyleftwithoutaword,andhesosensitive.=Theyleftwithoutaword,thoughhewassosensitive.Hehasbeenacquitted,andnowonder.=Hehasbeenacquitted,anditwasnowonder.Or=Hehasbeenacquitted,whichisnowonder.Ⅵ.量度形容词作主语补足语Johnisold.Johnistenyearsold.⑴big,heavy,far,hot等形容词不能被量度名词短语修饰It’s20kilosinweight.≠*20kilosheavyThevillageisfivemilesaway.≠*fivemilesfar⑵fast,slow,late等可以与量度名词短语使用Mywatchisfiveminutesfast.Thet