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初中英语一一引导的条件状语从句if引导条件状语从句最常用的连词是常见的条件状语从句表示在某条件下,某事很可能if,if发生,条件是可能存在的,主句中某种状况发生的概率也是很高的如假如你请他帮忙,他会帮你的If youask him,he willhelp you.假如你考试不及格,你会让他悲观的If youfail in the exam,you willlet himdown.假如你作业做完了就可以回家了If youhave finishedthe homework,you cango home.另外,从句还表示不行实现的条件或根本不行能存在的条件,也就是一种虚拟的条件或假设if从句多用一般过去时或过去完成时,表示对现在或过去的一种假设如假如我是你,我会邀请他参加聚会If Iwere you,I wouldinvite himto the party.要不是交通堵塞,我本会来得I wouldhave arrivedmuch earlierif Ihad notbeen caughtinthetraffic.早一些另外你还要留意条件句的时态搭配if从句用一般现在时,主句用一般将来时
1.ifIf heruns he91!get therein time.假如他用跑的,他就会刚好赶到那儿假如你拉猫的尾巴,它就会抓你The catwill scratchyou if you pullher tail.从句用一般现在时,主句用
1.
1.f may/might/can.假如雾在大一些,飞机可能就会改在别的机If thefog getsthicker theplane may/might bediverted场着陆假如雪停了,我们就可以出去If itstops snowingwe cango out.从句用一般现在时,主句用
3.if must/should.假如你想减月巴,你必需少吃面包If youwant tolose weightyou must/should eatless bread从句用一般现在时,主句用一般现在时
4.if(也可用)假如把冰加热,它就会化成水If youheat iceit turnsto water.will turn从句用现在进行时,主句用一般将来时
5.ifIf youare lookingfor Peteryou911find himupstairs.假如你是在找彼得,上楼就会找到他从句用现在完成时,主句用一般将来时
6.if假如你吃完了,我就叫服务生来算账If youhave finisheddinner Tilask thewaiter forthe bill.留意学习“引导的条件状语从句的用法,现在总结一下if”条件句不一般,几个要点记心间;if条件句,放在前,逗号要放句中间条件句表可能,主句多用将来时;条件句表事实,主句常用现在时在引导的条件状语从句中,假如从句谈论的是一个有可能发生的事实及其产生的相关的结果,if主句用一般将来时态,从句用一般现在时态如We canwalk thereif wecant find a bus.If itrains tomorrow,we willnot go to thezoo.What willyou doif youfindapanda indanger.假如条件句谈论的是重复发生和预示要发生的情景和事务,则主从句大多用一般现在时态if如If bearsare indanger,they attackpeople.在引导的条件状语从句中,和条件句位置灵敏,可干脆放在主句后面,若条件句放句首,if ifif从句后面要加逗号,和主句隔开还要留意前后时•态一样原则
一、用所给词的适当形式填空l.If youfeeltired,youhave to have arest.
3.If therebefewer trees,there bemore pollution.
5.If Marcialivealone,she keepa petparrot.
6.Lana buya newdress ifthe oldonebe outof style.
9.Peter sendme abeautiful souvenirif hetourSpain.
10.If MrGreensay I am hard-working,my parentsfeel glad.
11.1go to the beachif itnot rainthis week.
13.Hewrite aletter tohis grandparentsif hegethis reportcard thisweek.
14.If shegetup late,she notcatch theearly bus.
15.Petermajor inEnglish if hepass theexams inPeking University..假如努力学习,你就会取得好成果16If you,yougood..他假如看电视太久了,他的父母会不兴奋17If heTVtoo much,his parentsunhappy..假如我们为他组织生日聚会,大家都会来的18Everyoneif weabirthday partyhim..假如明天不下雨,我会和你一起去公园的19If ittomorrow,I goto thepark you..假如他有空,他会帮助你的21If he,heyou..你假如抄同学的作业就不能学好各门功课23Yougood atall thesubjects ifyou theother studentshomework.,单项选择(分)I15l.If youtotheparty,youll havea greattime.A.will go B.went C.go D.going
2.It will be along timePeter hiswork.A.since,has finishedB.after,finishes C.when,will finishD.before,finishes.
3.What willfather usfrom JapanA.take B.bring C.carry D.make
4.Weifang isfamous kites.A.for B.to C.on D.with
5..I herthe answerif sheme.A.can tell,will askB.will tell,will askC.would tell,ask D.will tell,asks
6.-What areyou goingto dotomorrow—We911gotothe librarytomorrow ifit.A.isnt rainB.rain C.wont rainD.doesnt rain一
7.Do youknow when he will come backtomorrow—Sorry,I dontknow.When heback,Til tellyou.A.comes B.will comeC.come D.may come
8.What willyou doifyoutotheold fblkshome visitA.goB.went C.going D.will go
9.If Ieat food,Ill bevery fat.A.too manyB.many tooC.too muchD.much too
10.Til givethe bookto himifhehere nextSunday.A.willcomeB.comes C.is comingD.came
11.There anEnglish filmin ourschool tomorrow.A.is goingtohaveB.will haveC.is goingto beD.has
12.Could youtell uswhereA.will the next Olympic Games heldB.the next Olympic GameswillbeheldC.would thenextOlympicGames beheldD.thenextOlympicGameswould beheld
13.When mymother returnedlast night,Iabook.A.read B.am readingC.was readingD.am goingto read
14.What youwhen itbegan torainA.do,do B.were,doing C.are,doing D.did,do
15.Til wakeyou upwhenheback.A.will B.is goingto comeC.comes D.come。