高中英語(yǔ)it的用法

It用法

一代詞it

1.用來(lái)表示時(shí)間、天氣、地點(diǎn)、距離、環(huán)境、形勢(shì)等。例如：

Itistwomilestothebeach..

Itwasraininginthemorning.

Ifit'sconvenienticanseeyoutomorrow.

2.用來(lái)指代人。指代性別不詳嬰兒或兒童；在不清楚某人身份時(shí)，也可使用ito

e.g---Lx)ok,someoneiscoming,whocanitbe?

-Itmaybetheheadmaster.

Someoneisringingthedoorbell,goandsee.

A.whoisheB.whoheisC.whoisitD.whoitis

3.it可以代替前面所提到的某特定事物，也可用來(lái)指代前文中的內(nèi)容，或指代整個(gè)主句

Itriedtopersuademyfathertogiveupsmoking,butfounditimpossible.

He'sboughtanewcar,sohedrivesiteverywheretoshowitoff.

Tom'smotherkepttellinghimthatheshouldworkharder,but___didn'thelp,(met93)

A.heB.whichC.sheD.it

Theparkersboughtanewhousebutwillneedalotofworkbeforetheycanmovein.

A.theyB.itC.oneD.which

二.it作形式主語(yǔ)

it在句中可作形式主語(yǔ)，而真正作主語(yǔ)的主語(yǔ)從句需要放在句子的末尾。主語(yǔ)從句后置常用以下幾種結(jié)構(gòu)：

1)Itis/was4-adj.+that從句

常用的形容詞有：clear,certain,funny,good,impossible,likely,natural,obvious,possible,probable,strange,surprising,

true,unusual,wonderful等

e.g.很明顯做運(yùn)動(dòng)對(duì)健康有好處。

_______________________________________________________foryourrudeness.重要的是你應(yīng)該向她道歉

2)It+be+adj./n.+(forsb./ofsb.)+todosth.

該句型中的形容詞通常表示事物的特點(diǎn)或特征的，如difficult,hard,easy,impossible,necessary,important,illeagal

等，此時(shí)用for；或表示人的性格特征或特點(diǎn)的，如nice,good,bad,kind,silly,foolish,wise,clever,careless,rude,

brave,cruel,careful,grateful等，這時(shí)要用of

___________________________________________________________bytheendof2014.完成這個(gè)工作是不可能的

_____________________________________________________withoutalicense.無(wú)證駕駛是違法的。

inpublicplaces他太粗魯了在公眾場(chǎng)合下說(shuō)話(huà)這么大聲。

3)Itis/was+名詞詞組+that從句。

可用于該結(jié)構(gòu)的名詞詞組有：apity/duty,nosurprise,anhonor,afact,amystery,ashame,nowonder等

e.g.IfsapitythatIdidn'tattendtheparty.

——Tomwasscoldedbyhisteacherformakingtroubleagain.

________________________________________________________________難怪他這么的沮喪。

______________________________________________________________intheexam.太丟臉了，他竟然考試時(shí)作弊。

4)Itis/was+V-ed+that從句

可用于該結(jié)構(gòu)的動(dòng)詞的過(guò)去分詞有：said,reported,thought,supposed,believed,hoped,expected,known,decided,

announced,arranged等

e.g.Itissaidthatsomethinghadbeendonetoendthepollution.

____________________________________________________________takingdrugs.據(jù)報(bào)道，那個(gè)演員被指控吸毒。

____________________________________________________人們相信治療癌癥的方法(curesforcancer)將會(huì)

被找到。

5)It+vi.+subject-clause可用于該結(jié)構(gòu)的動(dòng)詞有：叩pear,seem,happen,look等

e.g.Itappearedtoscientiststhatthestarshadmoved.

___________________________________________________________似乎他幾天之后就回來(lái)了。

6)Itdoesn'tmatter(makesadifference,)+連接代詞或連接副詞引起的從句作賓語(yǔ)。

e.g.Itdoesn'tmatterwhetherhe'lljointhearmyornot.

Itmakesnodifferencewherewehavetheconference.

________________________________________________________________你來(lái)不來(lái)都沒(méi)有關(guān)系。

Itmakesagreatdifferencethat你支持我們。

7)Ittakessb.sometimetodosth.

e.g.Itwilltakeyoutwodaystogetthereonfoot.

修理我們的屋頂花了這個(gè)人一周時(shí)間。

8)Itisnouse/nogood/nopointindoingsth.

e.g.Ifsnousearguingwithhim.

抱怨是沒(méi)有用的O

繼續(xù)吸煙對(duì)你沒(méi)有任何的好處0

注意：以下句型結(jié)構(gòu)中需要用虛擬語(yǔ)氣

①I(mǎi)tis/wasimportant(necessary,strange)that...;Itis/wasordered(required,suggested,proposed)that...;Itis/wasa

pity(ashame)that…表示遺憾等感情的句子中，主語(yǔ)從句要用"should+動(dòng)詞原形"，should可以省略。

e.g.It'snecessarythathe(operate)onatonce.

Itisapitythatsuchathing.

這種事竟然發(fā)生在你們班上，真是遺憾。

Itissuggestedthattonextweek.會(huì)議被推遲至lj下周°

②Itis(high)timethat…結(jié)構(gòu)中用should+動(dòng)詞原形(should不能省略)或動(dòng)詞過(guò)去式。

e.g.Itishightimethatyou(充分利用你的時(shí)間)togoover

yourlessons.

It's(about/high)timethat(該是到我們采取措施的時(shí)候了).

三it作形式賓語(yǔ)

1)動(dòng)詞consider(feel,find,think等)+it+形容詞/名詞+不定式/從句

_________________________________________________________everyday?我們認(rèn)為每天打掃教室是我們的責(zé)任。

__________________________________________________________我發(fā)現(xiàn)每天鍛煉是必要的。

2)主語(yǔ)+appreciate(enjoy,like,love,hate)+it+if(when)…結(jié)構(gòu)

e.g.Wewouldappreciateitifyoucouldcometohelpus.

_________________________________________________________如果您能用現(xiàn)金支付我將不勝感激。

Ilikeitwhenitrainsgently.

3)dependon,relyon,seeto(務(wù)必/確保)等短語(yǔ)后跟that從句時(shí)，要以it作形式賓語(yǔ)。

e.g.We'redependingonitthathewillfinishthejobbyFriday.

____________________________________________________________beforeyourleaving.請(qǐng)確保在你離開(kāi)前所有的

燈都關(guān)閉了。

__________________________________________________________你可以指望他在六點(diǎn)鐘之前出現(xiàn)。

四強(qiáng)調(diào)句中的it

強(qiáng)調(diào)句的基本句型itis/was+被強(qiáng)調(diào)成分+that/who+其他成分

強(qiáng)調(diào)句的一般疑問(wèn)句型Is/Was+it+所強(qiáng)調(diào)部分+that/who...?

強(qiáng)調(diào)句的特殊疑問(wèn)句型疑問(wèn)詞+is/was+it+that/who...?

not…until…的強(qiáng)調(diào)句型：itis/was+notuntil....+that+其它成分

________________________________________________________________________thecampsite.

直到午夜他們才到達(dá)了露營(yíng)地。

直到她回到家，Jenny才意識(shí)到她把鑰匙丟了。

Ihavenotingtoconfess.你究竟要讓我說(shuō)什么？

__________________________________________________________________正是在二戰(zhàn)期間他犧牲的嗎?

注意：強(qiáng)調(diào)句的疑問(wèn)句式及其在名詞性從句中的語(yǔ)序。

強(qiáng)調(diào)句的疑問(wèn)句式為：特殊疑問(wèn)詞+is/was+that+句子其他部分，它在名詞性從句中語(yǔ)序?yàn)殛愂稣Z(yǔ)序。例如:

Ijustwonderwhatitisthatmakeshimsoexcited

五.It常用的固定搭配

1.makeit

（1）在口語(yǔ)當(dāng)中相當(dāng)于succeed,表示：成功、做到、說(shuō)定、趕上、及時(shí)到達(dá)

It'shardtomakeittothetopinshowbusiness.

（2）在口語(yǔ)中相當(dāng)于fixthedatefor,表示“約定好時(shí)間”

—Shallwemeetnextweek?

一OK.WejustmakeitnextSaturday.

2.Takeit/thingseasy.別緊張；放輕松

3.1t*suptosb.這由某人決定。

4.can"helpIt（1）這也沒(méi)有辦法（2）無(wú)法控制自己

e.g.Ican'thelpitifyoudisobeytheruleagain.

Ialwaysgetangrywithhim.Ijustcan'thelpit.

5.1talldependso那要視情況而定。

6.Forgetit.沒(méi)關(guān)系，不必在意;休想

7.That，sit.這是要點(diǎn)，正是這樣。

8.Gotit.懂了；明白了

1.Don'tmentionit.不客氣（用來(lái)回答感謝）

2.manageit.做到；做成某事

六辨析幾個(gè)it句型

①I(mǎi)lwas+一段時(shí)間+before從句（從句用一般過(guò)去時(shí)）意為：還要過(guò)...時(shí)間才....

Itwillbe+—*段時(shí)間+before從句（從句用一般現(xiàn)在時(shí)）意為：過(guò)了...時(shí)間就/才…

________________________________________________________________還要過(guò)幾年你才能長(zhǎng)大。

_________________________________________________________________過(guò)了十個(gè)小時(shí)他們才最終到達(dá)山腳下。

_________________________________________________________________還要兩個(gè)月這棟大樓才能完工。

②Itis+一段時(shí)間+since從句（從句用一般過(guò)去時(shí)）

Itwas+一段時(shí)間+since從句（從句用過(guò)去完成時(shí)）自從....有....時(shí)間了。

______________________________________________________________________自從他戒煙已經(jīng)三年了。

________________________________________________________________自從他離開(kāi)家已經(jīng)很多年了。

③Itis/was+時(shí)間點(diǎn)+when從句.

__________________________________________________________________他睡覺(jué)的時(shí)候已經(jīng)是半夜了。

__________________________________________________________________我們出發(fā)的時(shí)候是早晨8點(diǎn)鐘。

④Itis+thefirst（second,third...）timethat.從句（從句用現(xiàn)在完成時(shí)）

Itwas+thefirst（second,third...）timethat.從句（從句用過(guò)去完成時(shí)）

_______________________________________________________________________這是我第二次看這部電影了

⑤Itishightimethatsb.did/shoulddosth.意為：該做..了。到做....的時(shí)間了

It的用法專(zhuān)項(xiàng)練習(xí)

1.1don'tthinkpossibletomasteraforeignlanguagewithoutmuchmemorywork.

A.thisB.itC.thatD.its

2.Was_in1998_____yourteachergraduatedfromuniversity?

A.that..,thatB.it...whichC.it...thatD.it...when

3.—isnogood__withoutdoinganything.

A.This...talkingB.It...tospeakC.That...tosayD.It...talking

4.Canitbeinthedrawer_youputyourpassport?

A.whereB.inwhichC.thereD.that

5.Itwasnotuntil1920regularradiobroadcastbegan.

A.whileB.whichC.thatD.since

6.___isthefactthatEnglishisbeingacceptedasaninternationallanguage.

A.ThereB.ThisC.ThatD.It

7.1hatewhenpeopletalkwiththeirmouthsfull.

A.itB.thatC.theseD.them

8.____noneedforustodiscusstheproblemagainsinceithasalreadybeensettled.

A.IthasB.TherehasC.ItisD.Thereis

9.1likeintheautumnwhentheweatherisclearandbright.

A.thisB.thatC.itD.one

10.Aknockonthedoormadehimlookup.But_wasonlythemanager.

A.thisB.thatC.sheD.it

lO.Does___matterifhecan'tfinishthejobontime?

A.thisB.thatC.heD.it

11.Tom'smotherkepttellinghimthatheshouldnotspendtoomuchtimesendingmessages,butdidn't

help.

A.heB.whichC.sheD.it

12.1don'tthinkimpossibletotalkwiththeUnitedStates'president,Obema.

A.thisB.thatC.itsD.it

13.—HowmuchdoIoweyouforlunch?

—一.Ifsnothing.（2008天津卷）

A.You'rewelcome.B.Forgetit.C.Withpleasure.D.That'sright.

14._isourbeliefthatimprovementsinhealthcarewillleadtoastronger,moreprosperouseconomy.（2006浙江卷）

A.AsB.ThatC.ThisD.It

15.-Haveyouheardthelatestnews?

-No,what7（2007全國(guó)卷1）

A.isitB.isthereC.aretheyD.arethose

16.—Thereisstillacopyofbookinthelibrary.Willyougoandborrow—?

—No,Fdratherbuyinthebookstore.（2007陜西卷）

A.it;oneB.one;oneC.one;itD.it;it

17._woniesmethewayhekeepschanginghismind.（2007山東卷）

A.ThisB.ThatC.WhatD.It