if条件句讲解及练习

条件句讲解及练习

从句 主句 与过去式（be用would/should/could/might+do 现were） 在事实相反 与过去完成式 would/should/could/might+havedone 过去事实相反 与should(wereto)+would/should/could/might+do 将动词原形 来事实相反 IfIwereyou,Iwouldnotletoutthesecret. 如果我是你的话，我不会泄露这个秘密的。

IfIknewhisnewaddress,Iwouldtellyou. 如果我知道他的新地址，我会告诉你的。

Ifhestudiedharder,hewouldpasstheexam. 如果他学习再努力点的话，他会通过考试的。

Ifwehadmadefullerpreparation,weshouldhavewonthegame.

如果我们做了更充分的准备的话，我们肯定就赢了这场比赛。

Ifyouhadtakenmyadvice,youwouldn’tha

vebeenlateforthemeeting.

如果你听了我的建议，你开会就不会迟到了。

Ifshewereto/shouldcome,Iwouldtellherthesecret.

万一她来的话，我会告诉她这个秘密。

（2）省略if的虚拟条件句

在含有were,had,或者should等词的虚拟条件句中，可以省略if,将

were,had或者should这些助动词放在句首。如：

WereIyou,Iwouldnotletoutthesecret.

Hadwemadefullerpreparation,weshouldhavewonthegame.

Hadyoutakenmyadvice,youwouldn’thavebeenlateforthemeeting.

Shouldshecome,Iwouldtellherthesecret.

高一语法练习（四）预测、if条件句及虚拟语气

一、单项选择

1.IfI_____wherehelived,I_____anotetohim.

A.know,wouldhavesent

B.hadknown,wouldhavesent

C.know,wouldsend

D.knew,wouldhavesent

2.Maryisilltoday.Ifshe_____,she_____absentfromschool.

A.werenotill;wouldn’tbe B.hadbeenill;wouldn’thavebeen

C.hadbeenill;shouldhavebeen D.hadn’tbeenill;couldbe

3.Heactedasifhe_____everythingintheworld.

A.knew B.knows

C.hasknown D.won'tknow

4.Ifyouhadenoughmoney,what_____ A.willyoubuy

B.wouldyoubuy

C.wouldyouhavebought

D.willyouhavebought

5.IfMr.Young_____withjustice,he_____suchawrongthing.

A.weretreated;wouldn’tdo

B.hadbeentreated;wouldn’thavedone C.weretreated;wouldn’thavedone D.hadbeentreated;wouldn’tdo

6.What_____ifthere_____nolightduringtheday

A.willhappen;was

B.wouldhappen;is

C.happens;were

D.wouldhappen;were

7.Thespokesmanactedthatwayasifhe_____anythingabouttheaccidentbutactuallyhedid.

A.doesn’thear

B.didn’thear C.haven’theard D.hadn’theard

8.Ifit_____notforthefactthatyou_____illnow,Iwouldsurelypunishyou. A.is;are B.were;were C.were;are D.was;were

9.ManyChinesemoviestarsnowhavegivenuptheirChinesenationality.IfIwerethem,I_____that. A.shouldn’tdo B.didn’tdo C.hadn’tdone D.won’tdo

10.Iwanttogetbackby5o’clockif_____. A.likely B.can C.possible D.probable

11.Itseemsasifit_____alreadysummernowbutitisonlyFebruary. A.is B.was C.were D.hadbeen

12.IfHenryhadnotpulledhiscaplowoverh

isbrow,he_____bythepolice.

A.mightberecognized

B.mighthavebeenrecognized

C.wouldhaverecognized

D.wastohavebeenrecognized

13.Thereisaringatthedoor.That_____bethepostman,Isuppose.

A.will B.would C.isgoingto D.wasgoingto

14.Lookatthedarkclouds—there_____beastorm.

A.will B.musthavebeen C.isgoingto D.would

15.—Whyareyoutakingthepicturesdown —I_____thewall. A.paint

B.havejustpainted

C.amgoingtopaint D.willhavepainted

16.—CanIstayathometomorrow —Yes,youcanifit_____. A.willsnow

B.isgoingtosnow

C.snows

D.snowed

17.Idon’tknowifhe_____thisafternoon.Butifhe_____,Iwilltellyou.

A.willcome;willdo;

B.comes;willdo

C.willcome;does

D.comes;does

18.—IthoughtIaskedyoutofixtheradio.

—Oh,I’msorry.I_____itrightaway. A.amtodo B.willdo C.wasabouttodo

D.amgoingtodo

19.TheWTOcan’tliveuptoitsname_____itdoesnotincludeacountrythatishometoonefifthofmankind.

A.aslongas B.whether C.if D.eventhough

20.Askhimtoringmeupifyou_____him. A.see B.saw C.wouldsee D.willsee

21.It’ssolate.Idon’tthinkhe______come. A.would B.should

C.isgoingto D.shall

22.Ifpeople_____pollutingtheair,animalsandplantswilldiesoon.

A.don’tstop

B.didn’tstop

C.shallnotstop

D.haven’tstopped

23.Ifyou_____aninterestingdayout,______theScienceMuseum.

A.want;visiting

B.want;visit

C.wantto;visit

D.wanting;visit

24.Ifthepurewaterisheatedto100centigradedegrees,it______boil.

A.isgoingto B.will C.would D.isto

25.Isadictionaryavailable,_____so,where A.if B.ifis C.andif D.andifis

二、翻译句子

26.要是我哥哥在这儿，一切都没问题了。

27.如果下雨，庄稼就得救了。 28.如果你昨天早点来，你就碰见他了。

29.他那样对待我，好像我是他儿子似的。

30.他们谈话的样子好像是多年的朋友一样。

31.我想今天下午不会下雨。 32.你下星期把车借给我行吗？ 33.发生的事我谁也不告诉。 34.我们不准备在那里多呆。

35.我难受极了，我想我要生病了。

Keys:

1—5BAABB6—10DDCAC11—15CBACC16—20CCBCA 21—25CABBC

26.Ifmybrotherwerehere,everythingwouldbeallright.

27.Ifitshouldrain,thecropswouldbesaved.

28.Ifyouhadcomeearlieryesterday,youwould(might)havemethim.

29.HetreatsmeasifIwerehisson.

30.Theyaretalkingasiftheyhadbeenfriendsformanyyears.

31.Idon’tthinkitwillrainthisafternoon. 32.Willyoulendmethecarnextweek

33.Iwon’ttellanybodywhathappened.

34.Wearenotgoingtostaytherelong.

35.Ifeelterrible.IthinkI’mgoingtobesick.