it+形式主语、形式宾语 高三英语上学期一轮复习专项

it做形式主语emptysubjectThatasinglemaninpossessionofagoodfortunemustbeinwantofawifeisatruthuniversallyacknowledged.

有钱的单身汉都要娶位太太，这是一条举世公认的真理。--PrideandPrejudice头重脚轻Itisatruthuniversallyacknowledgedthatasinglemaninpossessionofagoodfortunemustbeinwantofawife.1.含义：

英语中为保持句子的结构平衡，避免头重脚轻，常用it做形式主语代替句子的真正主语，但it没有实际含义。2.用法：①It代替不定式A.Itis/was+adj.+(of/for)+todo

for:adj.修饰事情（做某事对某人怎样）

对某人来说做某事是...样的of:adj.修饰人

（某人怎样）Itisimportant/vital/necessary/impossible

forsb.todoItisfoolish/polite/kindofsb.todoB.Itis/was+n.短语+todo做某事是...的

Itistimetodo

到了做某事的时间=forsth.Itisone’sturntodo

轮到某人做某事Itismygreathonourtodo

做...是我的荣幸C.Ittakes/tooksb.+时间+todo做某事花费了...时间

Review：几个花费spend：主语“人”spend+时间/金钱indoingcost

：

主语“物”sth.costsb.+钱pay

：

支付sb.pay+钱forsth.payforsb.替某人付钱take

：

形式主语

Ittakes/tooksb.+时间+todo2.用法：②It代替动名词A.表语是nice,good,enjoyable,awful,worthwhile,useless,nouse等形容词时B.表语是fun,awasteof,job,task,等名词或名词短语时It'sawasteoftime/moneydoingthis.这样做是浪费时间/钱。Ithinkitisworthwhilehaving/tohavesuchacompanion.我认为有那样一个伙伴是值得的。2.用法：③It代替从句A.Itbe+n.短语+that...Itisafactthat...事实是...Itisapitythat...可惜的是...Itisashamethat...遗憾的是...Itisgoodnewsthat......真是太好了Itisnosurprisethat...并不奇怪...Itisanhonorthat...真荣幸...Itismybeliefthat...我相信...2.用法：③It代替从句B.Itbe+adj.+that...Itisclear/obviousthat...显然...Itispossible/likelythat...很可能...Itisnaturalthat...很自然...Itiscertainthat...可以相信...Itisstrangethat...奇怪的是...Itisfortunatethat...幸运的是...2.用法：③It代替从句C.It+v.(单三/过去式）+that...Itseems/appearsthat...似乎是这样...Ithappensthat...碰巧发生...Itturnsoutthat...结果证明是...2.用法：③It代替从句D.It+bedone+that...Itissaidthat...据说...Itisreportedthat...据报道...Itis(generally)believedthat...人们相信...Itisknownthat...众所周知...Itisexpectedthat...有望...Itisprovedthat...已证实...Itisannouncedthat...已宣布...It做形式宾语emptyobject1.含义：当不定式(短语)、动名词(短语)或从句在句中作宾语时，为使句子结构平衡，常用it作形式宾语，将真正的宾语后置。Theyfinditinterestingtogotothemovies.Icouldappreciateit

ifyoucouldcometomybirthdayparty.2.用法：①

动词+it+宾语补足语+不定式/动名词/从句think,believe,make,

find,

consider,feel,take,support,regard...Themeetingistomakeitclearhowtheprojectshouldgoon.本会议旨在明确项目应如何继续。Ifeelita

geat

honourtobeinvitedtospeakatthemeeting

before

manystudents.被邀请在会议上的这么多学生面前发言，我感到非常荣幸。2.用法：②动词+it+when/if从句。常见于appreciate,enjoy,like,

dislike,

love,hate,prefer等少数表示情感态度的动词之后。Hehatesitwhenpeopleusehisbike.他讨厌别人用他的自行车。Ienjoy

it

thateveryonehadagoodtime.每个人都玩得高兴我很开心。2.用法：③

动词+介词构成的固定词组，如果介词后跟宾语从句，必须用：

动词+it+介词+名词+从句leaveit

to

(由...决定/判断)oweit

tosb(归功于/多亏)takeitforgranted

(想当然/认为..是真的)have/bear/keepitinmind

(记住)bringittoone’sattention(引起某人注意)2.用法：④Rumor