1、If引导的条件状语从句引导的条件状语从句主讲：吴永萍单位：漳州实验中学学段：初二年What can we learn from the traffic accident?If引导的条件状语从句引导的条件状语从句We must obey the traffic rules.If we dont obey the traffic rules,we will hurt ourselves.break the traffic rules/get a fineIf you.If you break the traffic rules,you will get a fine.If引导的条件状语从句引导的条
2、件状语从句cross a busy road/be in dangerYou will be in danger if you cross a busy road.If引导的条件状语从句引导的条件状语从句If引导的条件状语从句If you break the traffic rules,you will get a fine.You will be in danger if you cross a busy road.当if 解释为“如果,假如”，引导条件状语从句。一、位置(可前可后,从句在前用逗号和主句隔开)If he is at home,please call me.=Please ca
3、ll me if he is at home.如果你骑车马虎，你会受伤。If you ride carelessly,you will get hurt.如果我有时间，我会去看电影。I will go to see a filmif I have time.1.If从句是一般现在时，主句是一般将来时。主将从现主将从现二、结构与时态二、结构与时态如果你生病的话,你一定要去看医生。If you are ill,you mustgo to see a doctor.如果你努力学习，你会通过考试的。如果你努力学习，你会通过考试的。If you work hard,you canpass the exa
4、m.2.If从句是一般现在时，主句用情态动词。二、结构与时态二、结构与时态如果你需要我的帮助，请告诉我。Please tell me if you need my help.如果你很累就休息一下。If you are tired,have a rest.3.If从句是一般现在时，主句为祈使句。以动词原形开头二、结构与时态二、结构与时态1)If you work harder,you can learn English well.=Work harder,_ you can learn English well.2)If you dont hurry up,you will miss the t
5、rain.=Hurry up,_ you will miss the train.重难点突破重难点突破andor主语为you的条件状语从句可与的条件状语从句可与“祈使句祈使句+and/or+简单句”相互转换。表顺承表转折表转折一、改错一、改错1.If everyone will obey the traffic rules,there will be fewer accidents.2.Run faster,or you will catch the bus.3.I come to see you,if I have time.4.Well travel to Shanghai if it w
6、ill be fine next week.5.Works harder,or youll fail in the exam.obey sandyou will catch the bus.will come to see you if I have time.isWork harderFind out the mistakes6._ to the party,and youll have fun.A.Will goB.To go C.GoD.Going 7.I _ her the answer if she _me.A.can tell,will ask B.will tell,will ask C.would tell,ask D.will tell,asks8.-Well go to the library tomorrow if it _.A.isnt rainB.rain C.wont rain D.doesnt rain9.Be careful,_ you will hurt yourself.A.andB.or C.becauseD.so
