it+形式主語、形式賓語 高三英語上學(xué)期一輪復(fù)習(xí)專項

it做形式主語emptysubjectThatasinglemaninpossessionofagoodfortunemustbeinwantofawifeisatruthuniversallyacknowledged.

有錢的單身漢都要娶位太太，這是一條舉世公認(rèn)的真理。--PrideandPrejudice頭重腳輕Itisatruthuniversallyacknowledgedthatasinglemaninpossessionofagoodfortunemustbeinwantofawife.1.含義：

英語中為保持句子的結(jié)構(gòu)平衡，避免頭重腳輕，常用it做形式主語代替句子的真正主語，但it沒有實際含義。2.用法：①It代替不定式A.Itis/was+adj.+(of/for)+todo

for:adj.修飾事情（做某事對某人怎樣）

對某人來說做某事是...樣的of:adj.修飾人

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

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

Itistimetodo

到了做某事的時間=forsth.Itisone’sturntodo

輪到某人做某事Itismygreathonourtodo

做...是我的榮幸C.Ittakes/tooksb.+時間+todo做某事花費了...時間

Review：幾個花費spend：主語“人”spend+時間/金錢indoingcost

：

主語“物”sth.costsb.+錢pay

：

支付sb.pay+錢forsth.payforsb.替某人付錢take

：

形式主語

Ittakes/tooksb.+時間+todo2.用法：②It代替動名詞A.表語是nice,good,enjoyable,awful,worthwhile,useless,nouse等形容詞時B.表語是fun,awasteof,job,task,等名詞或名詞短語時It'sawasteoftime/moneydoingthis.這樣做是浪費時間/錢。Ithinkitisworthwhilehaving/tohavesuchacompanion.我認(rèn)為有那樣一個伙伴是值得的。2.用法：③It代替從句A.Itbe+n.短語+that...Itisafactthat...事實是...Itisapitythat...可惜的是...Itisashamethat...遺憾的是...Itisgoodnewsthat......真是太好了Itisnosurprisethat...并不奇怪...Itisanhonorthat...真榮幸...Itismybeliefthat...我相信...2.用法：③It代替從句B.Itbe+adj.+that...Itisclear/obviousthat...顯然...Itispossible/likelythat...很可能...Itisnaturalthat...很自然...Itiscertainthat...可以相信...Itisstrangethat...奇怪的是...Itisfortunatethat...幸運(yùn)的是...2.用法：③It代替從句C.It+v.(單三/過去式）+that...Itseems/appearsthat...似乎是這樣...Ithappensthat...碰巧發(fā)生...Itturnsoutthat...結(jié)果證明是...2.用法：③It代替從句D.It+bedone+that...Itissaidthat...據(jù)說...Itisreportedthat...據(jù)報道...Itis(generally)believedthat...人們相信...Itisknownthat...眾所周知...Itisexpectedthat...有望...Itisprovedthat...已證實...Itisannouncedthat...已宣布...It做形式賓語emptyobject1.含義：當(dāng)不定式(短語)、動名詞(短語)或從句在句中作賓語時，為使句子結(jié)構(gòu)平衡，常用it作形式賓語，將真正的賓語后置。Theyfinditinterestingtogotothemovies.Icouldappreciateit

ifyoucouldcometomybirthdayparty.2.用法：①

動詞+it+賓語補(bǔ)足語+不定式/動名詞/從句think,believe,make,

find,

consider,feel,take,support,regard...Themeetingistomakeitclearhowtheprojectshouldgoon.本會議旨在明確項目應(yīng)如何繼續(xù)。Ifeelita

geat

honourtobeinvitedtospeakatthemeeting

before

manystudents.被邀請在會議上的這么多學(xué)生面前發(fā)言，我感到非常榮幸。2.用法：②動詞+it+when/if從句。常見于appreciate,enjoy,like,

dislike,

love,hate,prefer等少數(shù)表示情感態(tài)度的動詞之后。Hehatesitwhenpeopleusehisbike.他討厭別人用他的自行車。Ienjoy

it

thateveryonehadagoodtime.每個人都玩得高興我很開心。2.用法：③

動詞+介詞構(gòu)成的固定詞組，如果介詞后跟賓語從句，必須用：

動詞+it+介詞+名詞+從句leaveit

to

(由...決定/判斷)oweit

tosb(歸功于/多虧)takeitforgranted

(想當(dāng)然/認(rèn)為..是真的)have/bear/keepitinmind

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