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1、If從句（條件狀語從句）主句+if條件狀語從句if條件狀語從句，+主句（從句后加逗號）if條件狀語從句要用一般現(xiàn)時。句型結(jié)構(gòu)時態(tài)If條件狀語從句IfI’mhungry,Iwill______________.IfI’mtired,Iwill_____________.LookandsayeatsomefoodhavearestIfI’mill,__________________.IwillseeadoctorLookandsayIfI’mlate,_________________.IwillsaysorryIfitrai
2、nstomorrow,I_____________________.willwatchTVathomeIfit_____________tomorrow,________________.I’llplaybasketballdoesn’trainIwon’t________________.playbasketballIfyouarefreethisweekend,whatwillyoudo?IfIamfree,…sleepwatchTVplaycomputergamespracticegrammarif條件狀語從句(2)句
3、子特點(diǎn)：1.if從句中用一般現(xiàn)在時，表示未來的一種條件，從句中可以加時間狀語。2.當(dāng)if表示未來的條件時，主句中用一般將來時。句型結(jié)構(gòu)：主句+if條件狀語從句if條件狀語從句，+主句（從句后加逗號）3.時態(tài)：if一般現(xiàn)在時，+主句一般將來時或（can/may/must+v.)e.g.1.Ifyoudon’tgetupearly,youwillbelateforschool.你如果不早點(diǎn)起床，上學(xué)就會遲到。2.IfIplaygamesonit,itwillgowrong.如果我用它玩游戲，它就會壞掉。3.Ifyoufinish
4、thehomework，youcangohome．如果你作業(yè)做完了就可以回家了。4.Ifyouwanttoloseweightyoumust/shouldeatlessbread.如果你想減肥，你必須少吃面包。5.Ifyouheaticeitturnstowater.(也可用willturn)如果把冰加熱，它就會化成水。if條件句不一般,幾個要點(diǎn)記心間。條件句放在前,逗號要放句中間。條件句表可能,主句多用將來時；條件句表事實(shí),主句常用現(xiàn)在時。if條件句有特點(diǎn),現(xiàn)在時把將來替；這個規(guī)則要牢記!if條件句歌訣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
