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1、If从句（条件状语从句）Completethesentenceswiththecorrectformofthewords.1.Ifyou_______(listen)tothemusic,_____(buy)aCD.2.Ifhe______(be)lateforschool,______(notwait)forhim.3.Ifyou____(buy)anewcamera,____(get)agoodone.4.Ifthelight____________(notcome)on,____(wait)
2、foroneminute.isbuygetdoesn’tcomewaitdon’twaitlistenbuyRevisionRevision祈使句+if条件状语从句if条件状语从句，+祈使句（从句后加逗号）if条件状语从句要用一般现在时。句型结构时态If条件状语从句（1）IfI’mhungry,Iwill______________.IfI’mtired,Iwill_____________.LookandsayeatsomefoodhavearestIfI’mill,______________
3、____.IwillseeadoctorLookandsayIfI’mlate,_________________.IwillsaysorryIfitrainstomorrow,I_____________________.willwatchTVathomeIfit_____________tomorrow,________________.I’llplaybasketballdoesn’trainIwon’t________________.playbasketballIfyouarefreet
4、hisweekend,whatwillyoudo?IfIamfree,…sleepwatchTVplaycomputergamespracticegrammarif条件状语从句(2)句子特点：1.if从句中用一般现在时，表示未来的一种条件，从句中可以加时间状语。2.当if表示未来的条件时，主句中用一般将来时。句型结构：主句+if条件状语从句if条件状语从句，+主句（从句后加逗号）3.时态：if一般现在时，+主句一般将来时或（can/may/must+v.)e.g.1.Ifyoudon’tgetup
5、early,youwillbelateforschool.你如果不早点起床，上学就会迟到。2.IfIplaygamesonit,itwillgowrong.如果我用它玩游戏，它就会坏掉。3.Ifyoufinishthehomework，youcangohome．如果你作业做完了就可以回家了。4.Ifyouwanttoloseweightyoumust/shouldeatlessbread.如果你想减肥，你必须少吃面包。5.Ifyouheaticeitturnstowater.(也可用willtur
6、n)如果把冰加热，它就会化成水。if条件句不一般,几个要点记心间。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。if条件句有特点,现在时把将来替；这个规则要牢记!if条件句歌诀Ifyoufinishthehomework，youcangohome．如果你作业做完了就可以回家了。上句条件句表一种事实主句一般现在时Ifyoudon’tgetupearly,youwillbelateforschool.你如果不早点起床，上学就会迟到。上句表可能主句中用will
7、1.Ifhe____________(not,doit),I___________(do)it.2.Ifyou____(be)lateforschool,myteacher________(be)angry.arewillbe3Ifshe________(win)theprize,we_______(be)happy.winswillbe4.IfI_________(not,eat)somuch,I_________(get)thinner.5.Ifyou______(tell)them,they
8、_____________(not,believe)you.don’teatwillgettellwon’tbelieve6I_________(stay)athome,Ifit__________(rain).7.Ifit____________(not,rain),I_________(go)out.8.we__________(play)football,Ifitis_________(sun).9.Ifshe__________(become)astar,herparent
