It用法练习题及答案Word格式文档下载.doc
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Itiseasiertosaythantodo.
Itisagoodacttohelptheothers.
2).it替代真正的主语——动名词短语,以动名词短语做主语的句子,主要在以nogood,nouse,noharm,dangerous,foolish等词作表语的句中.
It’snoharmdrinkingrunningwaterinthatarea。
It’sfoolishtalkinglikethat.
3).it替代从句作主语,用从句做主语的带it的句子很多,常见的有下面几类:
①Itisapity(ashame,afact,awonder,agoodthing,etc.)that…
Itisashamethathedidn’tpasstheexam.
②Itisstrange(surprising,obvious
true,good,possible,clear,etc.
)that…。
Itwasclearthattheyhadnodesireforpeace.
③Itseems(happened,turnedout,etc.)that…
Itseemedthatthingswerenotastheyexpected.
④Itissaid
(decided,expected,etc)that…
Itissaidthattheticketshavebeensoldout.
4.用作形式宾语。
当复合宾语中的宾语是不定式,-ing短语或从句往往用it作形式宾语,而将真正的宾语移至句末,句子重心后移。
1)WefinditdifficulttolearnEnglishwellinsuchashorttime.
2)Wethinkitnousecryingoverspiltmilk.
3)Wemadeitclearwhenandwhereweweregoingtohavethemeeting.
5.用于强调句型,即“Itis/was+被强调部分+that/who/whom+其它”句型之中。
使用该句型有以下几点请注意:
①强调句的谓语is或was永远用单数.
ItwasyesterdaythatImetyourfatherinthestreet.
②不管被强调部分是哪种状语,只能用that连接,不得使用where、when等连词.
ItwasinthestreetthatImetyourfatheryesterday.
③被强调部分为人时,可用who(主格或宾格)和whom(宾格)代替that,用that也行。
1)Itwasyourfatherthat/whom/whoImetinthestreetyesterday.
2)ItwasIthat/whometyourfatherinthestreetyesterday.
④强调句中也要注意主谓一致、人称一致和否定转移的问题。
1)Itistheywhoareourfriends.
2)Itwasnotuntilteno'
clockthatwegothomelastnight.
⑤注意不要混淆强调句和其他从句。
Itiswas…that…为强调句标志,去掉后仍可组成一个完整的句子,只是没被强调,而其他从句一般不具备这一特征。
比较:
1)Itwasteno'
clockwhenwegothomelastnight.我们昨晚到家时已十点了。
2)Itwasatteno'
clockthatwegothomelastnight.我们昨晚是在十点到家的。
第一句不是强调句,when不可改为that,因为去掉itwas和that后,只能组成“Wegothometeno'
clocklastnight.”这样一个不完整的句子;
第二句是强调句,that不可改为when.
二、常用句型及考点
I.形式主语型
1.Itisclear(obvious,true,possible,certain…)that…
2.Itisimportant(necessary,right,strange,natural…)that…
掌握本句型,应该记住所列举的形容词,并且记住that后的从句应用虚拟语气(should+动词原形),should可以省去。
3.Itisnogood(use)doingsth.
4.Itisapity(ashame…)that…
本句型中,that后的从句一般用虚拟语气(should十动词原形),should可以省去。
表示出乎意料,常译为“竟然”。
没有这种意义时,则不用虚拟语气。
5.Itistime(abouttime,hightime)that…
本句型中that后的从句应该用虚拟语气。
6.Itisthefirst(second…)timethat…
7.Itissaid(reported,learned….)that…
8.Itissuggested(ordered…)that…
本句型中的过去分词应该是表示请求、建议、命令等的词,that后的从句要用虚拟语气(should十动词原形),should可以省略。
常译为“据建议;
有命令……”。
9.Ithappens(seems,appears)that…
10.Ittakessb…todosth.
11.Itdoesn’tmatterwhether…
12.Itiskind(ofsb)todosth.
本句型中的不定式如果需要逻辑主语,则须要前置介词of,而句型中的形容词必须是能表示逻辑主语特征的形容词,常见的有bad,brave,careless,clever,cruel,foolish,honest,horrible,kind,lazy,modest,naughty,polite,rude,silly,stupid,wise,wrong等。
13.Itisnecessary(forsb)todosth.
14.Itis(just)likesbtodosth.
本句型为“某人(恰恰)是……样子”。
用来表示赞扬或不满,若用否定式,则表示怀疑。
例:
It'
slikehimtoleavetheworktoothers.
他就是这样的一个人,把工作推给别人。
15.Itisuptosbtodosth.
本句型表示“谊由某人做……”。
II.强调句型
Itis+被强调部分+that/who…
本句型中被强调部分可以是主语、宾语或状语。
强调的主语如果是人,that可以由who换用。
III.其他句型
1.Itis…since…
本句型主句中用时间作表语,一般用现在时或完成时,since引导的从句常用瞬间动词的一般过去时态。
主句如用一般过去时,则从句用过去完成时。
2.Itis…when…
本句型中的when引导的是一个时间状语从句,主句中的it指时间,表语由具体的时间充当。
3.Itlooks(seems)asif...
本句型中的asif引导一个状语从句,常译为“看起来好像……”。
如果与事实不相符合,则用虚拟语气.
例1Itlooksasifheisill(真的病了).
例2Itlooksasifhewereill(没有生病).
Exercises:
一.单项选择
1.Itwasatthegate____hetoldmethenews.
A.thatB.whatC.whichD.when
2.Is____necessarytotellhisfathereverything
A.itB.thatC.whatD.he
3.Wasitinthispalace____thelastemperordied?
A.thatB.inwhichC.inwhereD.which
4.Is____possibletoflytothemooninaspaceship?
A.nowB.manC.thatD.it
5.WasitduringtheSecondWorldWar____hedied?
A.thatB.whileC.inwhichD.then
6.Is____necessarytocompletethedesignbeforeNationalDay?
A.thisB.thatC.itD.he
7.Idon'
tthink____possibletomasteraforeignlanguagewithoutmuchmemorywork.
A.thisB.thatC.itsD.it
8.Does____matterifhecan'
tfinishthejobontime?
A.thisB.thatC.heD.it
9.Itwasnot____shetookoffherdarkglasses____,Irealizedshewasafamousfilmstar.
A.when;
thatB.until;
thatC.until;
whenD.when;
then
10.Tom‘smotherkepttellinghimthatheshouldworkharder,but____didn’thelp.
A.heB.whichC.sheD.it
11.____isafactthatEnglishisbeingacceptedasaninternationallanguage.
A.ThereB.ThisC.ThatD.It
12.Is________possibletoflytothemooninaspaceship?
A.nowB.manC.thatD.it
13.Ourfoodandservicearebetterthan________usedtobe.
A.itB.weC.theyD.them
14.________appearstome________thereportmustbetruth.
A.That;
itB.It;
thatC.It;
itD.That;
that
15.Hefeels________dutytohelpothers.
A.thatheB.thathisC.itheD.ithis
16.Take________easy.Theroadsareicy.
A.itB.themC.usD.you
17.TheTVsetsmadeinChinaaremuchbetterthan________inJapan.
A.thatB.thoseC.themD.It
18.——Haveyoufoundthebikeyoulostyesterday?
——Yes,I'
vefound________already.
A.itB.thatC.theoneD.thatone
19.——I'
mlookingforaflat.
——Wouldyoulike____with____garden?
A.it;
theB.it;
aC.one;
aD.one;
the
20.________was________whoImetinthemuseumthismorning.
A.It;
himB.It;
heC.That;
heD.That;
him
21.Itwasinthericefields________wehadourLeaguemeeting.
A.whereB.thatC.inwhichD.onwhich
22.________youcometothepartysolate?
A.WhyisitB.Whyitis
C.WhyitisthatD.Whyisitthat
23.——Wereallthreepeopleinthecarinjuredintheaccident
——No,___onlythetwopassengers___gothurt.
A.theywere;
thatB.therewas;
C.itwas;
whoD.thereare;
who
24.Idon'
tthink________possibletomasteraforeignlanguagewithoutmuchmemorywork.
A.thisB.thatC.itsD.it
25.Itwasnot________shetookoffherglasses________Irealizedshewasafamousfilmstar.
thatB.until;
thatC.until;
whenD.when;
26.Itwasnotuntil1920____regularradiobroadcastsbegan.
A.whileB.whichC.thatD.since
27.________isafactthatEnglishisbeingacceptedasaninternationallanguage.
A.ThereB.ThisC.ThatD.It
28.Itwasabout600yearsago________thefirstclockwithafaceandanhourhandwasmade.
A.thatB.untilC.beforeD.when
29.ItwasonlywhenIrereadhispoemsrecently____Ibegantoappreciatetheirbeauty.
A.untilB.thatC.thenD.So
30.Ihate______whenpeopletalkwiththeirmouthsfull.
A.itB.thatC.theseD.them
31.——Whydon'
twetakealittlebreak?
——Didn'
twejusthave________?
A.itB.thatC.oneD.this
32.WasitduringtheSecondWorldWar____hedied?
(MET88)
A.that B.WhileC.inwhich D.Then
33.Is____possibletoflytothemooninaspaceship?
A.now B.that C.it D.Man
34.Idon'
tthink___possibletomasteraforeignlanguagewithoutmuchmomorywork.(MET90)
A.ThisB.that C.its D.It
35.___isafactthatEnglishisbeingacceptedasaninternationallanguage.(NMET95)
A.ThereB.ThisC.That D.It
36.Itwasabout600yearsago___thefirstclockwithfaceandanhourhandwasmade.(NMET97)
A.thatB.untilC.before D.when
37.____computersplaysuchanimportantpartinourdailylife?
A.Whyitisthat B.Whyisitthat
C.Whywasitthat D.Whyisit
38.WasitduringtheSecondWorldWar_____hedied?
A.thatB.whileC.inwhichD.then
39.Is____necessarytotakeoffourshoeswhenweenterthelab?
A.everyoneB.thisC.herD.it
40.Is____possibletoflytothemooninaspaceship?
A.nowB.thatC.itD.man
41.Idon’tthink___possibletomasteraforeignlanguagewithoutmuchmemorywork.
A.thisB.thatC.itsD.it
42.Sheheardofaterriblenoise,___broughtherheartintohermouth.
A.itB.whichC.thisD.that
43.Alicereceivedaninvitationfromherboss,____cameasasurprise.
A.itB.thatC.whichD.he
44.Does____matterifhecan’tfinishthejobontime?
A.thisB.thatC.heD.it
45.Tom’smotherkepttellinghimthatheshouldworkharder,but____didn’thelp.
A.heB.whichC.sheD.it
46.Theweatherturnedouttobeverygood,___wasmorethanwecouldexpect.
A.whatB.whichC.thatD.it
47.____isafactthatEnglishisbeingacceptedasaninternationallanguage.
A.ThereB.ThisC.ThatD.It
48.Ihopethereareenoughglassesforeachguesttohave_____.
A.it