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1、Unit10SectionAPeriod2(3a-3c)Ifyouarehappy…Lookatthepicturesandmakesentenceswith“if”.IfyougotothepartywithKarenandAnna,you’llhaveagoodtime.Ifyouwearjeanstotheparty,theteacherswon’tletyouin.Ifyoutakethebustotheparty,you’llbelateforschool.Ifyoudon’tgotothep
2、arty,youwillbesorry.Ifyouarehappy,whatwillyoudo?IfIamhappy,Iwillplaysoccer.Ifyouarerich,whatwillyoudo?IfIamrich,Iwillbuyabighouse.Ifyouhavearobot,whatwillyouletitdo?IfIhavearobot,Iwillletit…helpwiththehousework.babysitmylittlebrother.wakemeupinthemorning
3、.teachmeEnglishafterschool.IthinkI’lltakethebustotheparty.Ifyoudo,you’llbelate.IthinkI’llstayathome.Ifyoudo,you’llbesorry.Whatwillhappeniftheyhavethepartytoday?Iftheyhaveittoday,halftheclasswon’tcome.Shouldweaskpeopletobringfood?Ifweaskpeopletobringfood,
4、they’lljustbringpotatochipsandchocolate.GrammarFocusif引导的条件状语从句时态---主将从现主句用一般将来时，从句用一般现在时来表示将来可能发生的动作或存在的状态如果明天下雨，我将不出去散步。Ifitrainstomorrow,Iwon’tgooutforawalk.从句主句主句从句（一般现在时）（一般将来时）（一般现在时）（一般将来时）主将从现Ifyoudo,you’llbelate.You’llbelate,ifyoudo.if条件状语从句Itwi
5、llbesunnytomorrow.Wewillhaveatriptomorrow.Wewillhaveatripifitissunnytomorrow.Ifitissunnytomorrow,wewillhaveatrip.Wewillhaveatripifitissunnytomorrow.Ifitissunnytomorrow,wewillhaveatrip.主句在前从句紧跟其后从句在前时，用“,”与主句隔开if条件句不一般，几个要点记心间；条件句，放在前，逗号要居中间；条件句表可能，主句多用将来
6、时；条件句表事实，主句常用现在时。有关if条件状语从句的口诀Ifitishot,Iwillgotoswimwithfriends.Lookandsay.IfIgotothezoo,Iwillseetheanimalshow.Ifyougototheparty,youwillhaveagreattime.Ifhehasfreetime,hewillgoforatripwithhisstudents.Ifsheeatstoomuch,shewillbeveryfat.Makeyoursentences.I
7、fitrainstomorrow,shewillstudyathome.IfIstudyhard,IwillgotoBeijingUniversity.3aFillintheblankswiththecorrectformsoftheverbsinbrackets.DearSuMei,Idon’t_______(know)whatto______(do)aboutgoingtoMike’sbirthdaypartytomorrownight.Myparents_______(think)Ishoulds
8、tudyformyEnglishexamnextweek.IfI______(go)totheparty,they________(be)upset.Mike______(tell)ustowearniceclothes,butIdon’t______(have)any.IfI_______(wear)jeans,I______(look)knowdothinkgowillbetoldhavewearwilllooktheworst.Als
