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1、If从句（条件状语从句）主句+if条件状语从句if条件状语从句，+主句（从句后加逗号）if条件状语从句要用一般现时。句型结构时态If条件状语从句IfI’mhungry,Iwill______________.IfI’mtired,Iwill_____________.LookandsayeatsomefoodhavearestIfI’mill,__________________.IwillseeadoctorLookandsayIfI’mlate,_________________.IwillsaysorryIfitrai
2、nstomorrow,I_____________________.willwatchTVathomeIfit_____________tomorrow,________________.I’llplaybasketballdoesn’trainIwon’t________________.playbasketballIfyouarefreethisweekend,whatwillyoudo?IfIamfree,…sleepwatchTVplaycomputergamespracticegrammarif条件状语从句(2)句
3、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’tgetupearly,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.Ifyoufinish
4、thehomework，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willturn)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1.Ifhe____
5、________(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_____________(not,believ
6、e)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,herparents____________(not,send)heraway10.He_________(w
7、atch)TV,ifhe______(be)free.willstayrainsdoesn’trainwillgowillplaysunnybecomeswon’tsendwillwatchisdoesn’tdowilldoExerciseTime---I’malwaystiredinthemorning.---Ifyougotobedearly,youwon’tbetiredinthemorning.Givingsuggestions:---IgetthirstywhenIrun.---Ifyoutakesomewater
8、withyou,youwon’tgetthirstywhenyourun.Iworrysomuchaboutmyschoolwork.---Ifyoualwaysworkhard,youwon’tworryaboutyourschoolwork.Youshouldworkhard!Unit
