条件状语从句和让步状语从句课件.ppt
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1、关于条件状语从句和让步状语从句第1页,此课件共13页哦 1.条件状语从句条件状语从句引导状语从句的连接词有引导状语从句的连接词有:if,unless=if notas long as on condition that in caseprovided/providing(that)suppose/supposing(that)第2页,此课件共13页哦I.ifIf you work harder,you will succeed.Work harder,and you will succeed.Work harder,or you wont succeed.Working harder,you
2、will succeed.第3页,此课件共13页哦If 虚拟条件句时间时间If 条件句条件句主句主句过去过去had donewould/could/should/might have done现在现在did/werewould/could/should/mightdo未来未来did/werewere toShould dowould/could/should/might do第4页,此课件共13页哦II.unless=if not We cant write to Mary unless she tells us her address.We cant write to Mary if she
3、 doesnt tell us her address.III.as/so long as(只要)=only if 1)I will never give up learning as long as I live.2)You may borrow the book as long as you keep it clean.第5页,此课件共13页哦IV.on condition that(条件是)Well let you use the room on condition that you keep it tidy.V.in case(万一)Youd better take your rain
4、coat with you in case it rains/should rain.VI.suppose/supposing/provided/providingSuppose/Supposing/Provided/Providing(that)they refuse us,who else can we turn to for help?第6页,此课件共13页哦让步状语从句让步状语从句 引导让步状语从句的连词有:引导让步状语从句的连词有:Although,though,as,even if,even though,no matter+疑问词疑问词,疑问词疑问词+everwhile,whet
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