if 引导的条件状语从句

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1、If引导的条件状语从句If引导的条件状语从句遵循主过从过、主将从现的原则。主将从现（主情从现、主祈从现）Ifitrainstomorrow,Iwon’tclimbthehills.Ifitdoesn’traintomorrow,Iwillgotothecountrysidewithmyfriends.If引导的条件状语从句If引导的条件状语从句遵循主过从过、主将从现的原则。主将从现（主情从现、主祈从现）Ifyouwillhelpme,I'llfinishitontime.Wemaygooutifit'sfinetomorrow.Ifyoufinishyourhom

2、ework,youcanwatchTV.PleasecallmeifyougoshoppingnextSunday.IfIgothere，I'lltakehersomeflowers.We'llstayathomeifitrainstomorrow.Pleasecallmeifhe’sathome.Ifyouworkharder,you’llpasstheexam.Shewillvisithergrandpaifshehastimetomorrow.We’lltakeataxitothecityifthetraindoesn’tarriveontime.Thete

3、acherwillbeangryifheislate.If引导的条件状语从句与unless引导的条件状语从句的转换If+否定形式=unless+肯定形式Youwon’tpasstheexamifyoudon’tworkhard.=Youwon’tpasstheexamunlessyouworkhard.Ifyoudon’tgotobedearlier,youwillfeeltiredinthemorning.=Unlessyougotobedearlier,youwillfeeltiredinthemorning.Ifitdoesn’train,hewillpla

4、ywithmetomorrow.=Unlessitrains,hewillplaywithmetomorrow.Ifshedoesn’tcome,I’llgoshoppingalone=Unlessshecomes,I’llgoshoppingalone.if条件状语从句与祈使句,and/or＋一般将来时的句子转化Ifyougetupearly,you’llgetthereontime.=Getupearly,andyou’llgetthereontime.=Getupearly,oryouwon’tgetthereontime.Ifyougetupearly，y

5、ouwon'tbelateforschool.=Getupearly，andyouwon'tbelateforschool.=Getupearly，oryouwillbelateforschool.Ifyoudon’tgetupearly,youwon’tcatchupwiththeearlybus.=Getupearly,andyouwillcatchupwiththeearlybus.=Getupearly,oryouwon’tcatchupwiththeearlybus.if条件状语从句与without的句子转化Ifthereisnowater,wecan'

6、tlive.=Wecan'tlivewithoutwater.Ifthereisnowater,fishwilldie.=Fishwilldiewithoutwater.Ifyouhelpme,I’llfinishtheworksoon.=Withyourhelp,Ifinishtheworksoon.if条件状语从句与祈使句,and/or＋一般将来时的句子转化Ifyougetupearly,you’llgetthereontime.=Getupearly,andyou’llgetthereontime.=Getupearly,oryouwon’tgetthere

7、ontime.Ifyougetupearly，youwon'tbelateforschool.=Getupearly，andyouwon'tbelateforschool.=Getupearly，oryouwillbelateforschool.Ifyoudon’tgetupearly,youwon’tcatchupwiththeearlybus.=Getupearly,andyouwillcatchupwiththeearlybus.=Getupearly,oryouwon’tcatchupwiththeearlybus.1.yourfriend,I'lltel

8、lyou.