精選優(yōu)質(zhì)文檔-----傾情為你奉上精選優(yōu)質(zhì)文檔-----傾情為你奉上專心---專注---專業(yè)專心---專注---專業(yè)精選優(yōu)質(zhì)文檔-----傾情為你奉上專心---專注---專業(yè)if條件句【知識(shí)要點(diǎn)】定義：常見的if條件狀語從句表示在某條件下，某事很可能發(fā)生，條件是可能存在的，主句中某種情況發(fā)生的概率也是很高的。E.g.Ifyouaskhim，hewillhelpyou．如果你請他幫忙，他會(huì)幫你的。E.g.Ifyoufailintheexam，youwilllethimdown．如果你考試不及格，你會(huì)讓他失望的。E.g.Ifyouhavefinishedthehomework，youcangohome．如果你作業(yè)做完了就可以回家了。另外，if從句還表示不可實(shí)現(xiàn)的條件或根本不可能存在的條件，也就是一種虛擬的條件或假設(shè)。從句多用一般過去時(shí)或過去完成時(shí)，表示對現(xiàn)在或過去的一種假設(shè)。E.g.IfIwereyou，Iwouldinvitehimtotheparty．如果我是你，我會(huì)邀請他參加聚會(huì)。E.g.IwouldhavearrivedmuchearlierifIhadnotbeencaughtinthetraffic．要不是交通堵塞，我本會(huì)來得早一些。另外你還要注意if條件句的時(shí)態(tài)搭配1．if從句用一般現(xiàn)在時(shí)，主句用一般將來時(shí)E.g.Ifherunshe’llgetthereintime.如果他用跑的，他就會(huì)及時(shí)趕到那兒。E.g.Thecatwillscratchyouifyoupullhertail.如果你拉貓的尾巴，它就會(huì)抓你。2．if從句用一般現(xiàn)在時(shí)，主句用may/might/canE.g.Ifthefoggetsthickertheplanemay/mightbediverted.如果霧在大一些，飛機(jī)可能就會(huì)改在別的機(jī)場降落。E.g.Ifitstopssnowingwecangoout.如果雪停了，我們就可以出去。3．if從句用一般現(xiàn)在時(shí)，主句用must/shouldE.g.Ifyouwanttoloseweightyoumust/shouldeatlessbread.如果你想減肥，你必須少吃面包。4．if從句用一般現(xiàn)在時(shí)，主句用一般現(xiàn)在時(shí)E.g.Ifyouheaticeitturnstowater.(也可用willturn)如果把冰加熱，它就會(huì)化成水。5．if從句用現(xiàn)在進(jìn)行時(shí)，主句用一般將來時(shí)E.g.IfyouarelookingforPeteryou’llfindhimupstairs.如果你是在找彼得，上樓就會(huì)找到他。6．if從句用現(xiàn)在完成時(shí)，主句用一般將來時(shí)E.g.IfyouhavefinisheddinnerI’llaskthewaiterforthebill.如果你吃完了，我就叫服務(wù)生來算賬注意：學(xué)習(xí)"if"引導(dǎo)的條件狀語從句的用法,現(xiàn)在總結(jié)一下:if條件句不一般,幾個(gè)要點(diǎn)記心間;條件句,放在前,逗號(hào)要放句中間。條件句表可能，主句多用將來時(shí)；條件句表事實(shí)，主句常用現(xiàn)在時(shí)。在if引導(dǎo)的條件狀語從句中，如果從句談?wù)摰氖且粋€(gè)有可能發(fā)生的事實(shí)及其產(chǎn)生的相關(guān)的結(jié)果，主句用一般將來時(shí)態(tài)，從句用一般現(xiàn)在時(shí)態(tài)。如：E.g.Wecanwalkthereifwecan'tfindabus.E.g.Ifitrainstomorrow,wewillnotgotothezoo.E.g.Whatwillyoudoifyoufindapandaindanger.如果if條件句談?wù)摰氖侵貜?fù)發(fā)生和預(yù)示要發(fā)生的情景和事件，則主從句大多用一般現(xiàn)在時(shí)態(tài)。E.g.Ifbearsareindanger,theyattackpeople.在if引導(dǎo)的條件狀語從句中，if和條件句位置靈活，可直接放在主句后面，若if條件句放句首，從句后面要加逗號(hào)，和主句隔開。還要注意前后時(shí)態(tài)一致原則【經(jīng)典練習(xí)】用所給詞的適當(dāng)形式填空1.Ifyou________(feel)tired,you_______________(have)tohavearest.2.Where_______he_________(see)thefilmifhe________________(have)time?3.Ifthere__________(be)fewertrees,there_______________(be)morepollution.4.He_____________(dress)

morecasuallyifhe________________(notwork)onweekends.5.IfMarcia_____________(live)alone,she___________________(keep)apetparrot.6.Lana________________(buy)anewdressiftheoldone____________(be)outofstyle.7.Thetwins______________(fight)ifthey_______________(argue).8.I____________(have)abakesaleifI_____________(need)moneyforeducation.9.Peter_____________(send)meabeautifulsouvenirifhe________________(tour)Spain.10.IfMrGreen___________(say)Iamhard-working,myparents_________(feel)glad.11.I____________(go)tothebeachifit________________(notrain)thisweek.12.__________they__________(have)amatchiftheP.E.teacher_____________(be)busy?13.He____(write)alettertohisgrandparentsifhe____(get)hisreportcardthisweek.14.Ifshe____________(get)uplate,she_____________(notcatch)theearlybus.15.Peter________(major)inEnglishifhe____(pass)theexamsinPeking

University.翻譯句子1.如果他到的晚了會(huì)發(fā)生什么事情？What_______________ifhe_____________late?2.如果努力學(xué)習(xí)，你就會(huì)取得好成績。Ifyou___________________,you___________good_____________.3.他如果看電視太久了，他的父母會(huì)不高興。

Ifhe_________TVtoomuch,hisparents____________________unhappy.4.如果我們?yōu)樗M織生日聚會(huì)，大家都會(huì)來的。

Everyone________________ifwe_____________abirthdayparty__________him.5.如果明天不下雨，我會(huì)和你一起去公園的。

Ifit__________

__________tomorrow,I______________gotothepark_________you.6.如果她睡過頭了，就會(huì)旅游遲到的。

She__________________________thetripifshe___________________.7.如果他有空，他會(huì)幫助你的。Ifhe_________________,he_________________

you.8.如果Tom考試不及格，他就沒有機(jī)會(huì)上高中了。Tom_________havethe________togotothe________highschoolifhe________theexams.一般將來時(shí)專項(xiàng)練習(xí)一、單項(xiàng)選擇(

)1.

There__________ameetingtomorrowafternoon.

A.willbegoingto

B.willgoingtobeC.isgoingtobe

D.willgotobe(

)2.

Charlie________herenextmonth.

A.isn’tworking

B.doesn’tworkingC.isn’tgoingtoworking

D.won’twork(

)3.

He________verybusythisweek,he________freenextweek.

A.willbe;is

B.is;isC.willbe;willbe

D.is;willbe(

)4.

There________adolphinshowinthezootomorrowevening.

A.was

B.isgoingtohaveC.willhave

D.isgoingtobe(

)5.

–_____you______freetomorrow?–No.I_____freethedayaftertomorrow.A.Are;goingto;will

B.Are;goingtobe;willC.Are;goingto;willbe

D.Are;goingtobe;willbe(

)6.

Mother________meanicepresentonmynextbirthday.

A.willgives

B.willgiveC.gives

D.give(

)7.

–ShallIbuyacupofteaforyou?–________.（不，不要。）

A.No,youwon’t.

B.No,youaren’t.C.No,pleasedon’t.

D.No,please.(

)8.

–Whereisthemorningpaper?–I________ifforyouatonce.

A.get

B.amgettingC.toget

D.willget(

)9.

________aconcertnextSaturday?

A.Therewillbe

B.WilltherebeC.Therecanbe

D.Thereare(

)10.Iftheycome,we________ameeting.

A.have

B.willhaveC.had

D.wouldhave(

)11.He________herabeautifulhatonhernextbirthday.

A.gives

B.gaveC.willgiving

D.isgoingtogiving(

)12.He________tousassoonashegetsthere.

A.writes

B.haswrittenC.willwrite

D.wrote(

)13.He________inthreedays.

A.comingback

B.camebackC.willcomeback

D.isgoingtocomingback(

)14.Ifit________tomorrow,we’llgoroller-skating.A.isn’train

B.won’trainC.doesn’train

D.doesn’tfine(

)15.–WillhisparentsgotoseetheTerraCottaWarriorstomorrow?

–No,________（不去）.

A.theywilln’t.

B.theywon’t.C.theyaren’t.

D.theydon’t.(

)16.Who________we________swimmingwithtomorrowafternoon?

A.will;go

B.do;goC.will;going

D.shall;go(

)17.We________theworkthiswaynexttime.

A.do

B.willdoC.goingtodo

D.willdoing(

)18.Tomorrowhe___akiteintheopenairfirst,andthen____boatinginthepark.A.willfly;willgo

B.willfly;goesC.isgoingtofly;willgoes

D.flies;willgo(

)19.Thedayaftertomorrowthey________avolleyballmatch.A.willwatching

B.watchesC.iswatching

D.isgoingtowatch(

)20.There________abirthdaypartythisSunday.

A.shallbe

B.willbeC.shallgoingtobe

D.willgoingtobe(

)21.They________anEnglisheveningnextSunday.

A.arehaving

B.aregoingtohaveC.willhaving

D.isgoingtohave(

)22.________you________freenextSunday?

A.Will;are

B.Will;beC.Do;be

D.Are;be(

)23.He________thereattentomorrowmorning.

A.will

B.isC.willbe

D.be(

)24.________yourbrother________amagazinefromthelibrary?

A.Are;goingtoborrow

B.Is;goingtoborrow

C.Will;borrows

D.Are;goingtoborrows(

)25.–ShallIcomeagaintomorrowafternoon?–________（好的）.

A.Yes,please

B.Yes,youwill.C.No,please.

D.No,youwon’t.(

)26.It________theyearofthehorsenextyear.

A.isgoingtobe

B.isgoingtoC.willbe

D.willis(

)27.________openthewindow?

A.Willyouplease

B.PleasewillyouC.Youplease

D.Doyou(

)28.–Let’sgoouttoplayfootball,shallwe?–OK.I________.

A.willcoming

B.begoingtocomeC.come

D.amcoming(

)29.It________usalongtimetolearnEnglishwell.

A.takes

B.willtakeC.spends

D.willspend(

)30.Thetrain________at11.

A.goingtoarrive

B.willbearriveC