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1、初中阶段“并列句”的用法(由and,then,or,but,so连接的句子)连词“and,but,or,so”和“then”都用来连接两个句子，此句叫做并列句。A：时态：I.“and”连接的并列句时态:a.简单句+and+简单句（时态前后一致）Mr.WangteachesmathsandMissLiteachesEnglish.Hisfatherisateacherandhismotherisadoctor.b.祈使句+and/then+简单句（一般将来时）Useyourhead,and/thenyouwillhaveagoo
2、dway.Thinkhard,and/thenyouwillhaveanidea.注：以上两句可以改为条件状语从句。Ifyouuseyourhead,youwillhaveagoodway.Ifyouthinkhard,youwillhaveanidea.II.“or”连接的并列句时态:祈使句+or+简单句（一般将来时）Hurryup,oryouwillbelateforschool.Workhard,oryouwon’tbeabletopassthisexam.注：以上两句可以改为条件状语从句。Ifyouhurryup,yo
3、uwon’tbelateforschool.Ifyouworkhard,youwillbeabletopassthisexam.III.“but”连接的并列句时态:简单句+but+简单句（时态前后一致）Heisveryold,buthestilllooksstrong.Itwasverydark,buthestillwentonworking.注：以上两句可以改为让步状语从句。Thoughheisveryold,hestilllooksstrong.Thoughitwasverydark,hestillwentonworkin
4、g.IV.“so”连接的并列句时态:a.简单句+so+简单句（时态前后一致）Hewasillyesterday,sohedidn'tgotoschool.b.根据句意来定：Hehaslosthisticket,sohewon’tgotothecinema.Shehadseenthisfilmtwice,soshedidn’tgotothecinemayesterday.注：以上三句可以改为原因状语从句。Hedidn'tgotoschoolbecausehewasillyesterday.Hewon’tgotothecinema
5、becausehehaslosthisticket.Shedidn’tgotothecinemayesterdaybecauseshehadseenthisfilmtwice.B:结构：I.祈使句+and/then+简单句(一般将来时)可以改为条件状语从句1.Useyourhead,andyouwillfindagoodway.→Ifyouuseyourhead,youwillfindagoodway.2.Thinkhard,thenyouwillhaveagoodidea.→Ifyouthinkhard,youwillhav
6、eagoodidea.祈使句+or+简单句(一般将来时)可以改为条件状语从句1.Hurryup,oryouwon'tcatchthebus.→Ifyouhurryup,youwillcatchthebus.Ifyoudon'thurryup,youwillmissthebus.Ifyoudon'thurryup,youwon'tcatchthebus.II.“but”连接的并列句可以改为“though/although”引导的让步状语从句1.Hewasweakbutheworkedhard.→Thoughhewasweak,h
7、eworkedhard.2.Mr.Liisnotrichbutheishappy.→Thoughheisnotrich,heishappyIII.“so”连接的并列句可以改为“because”引导的原因状语从句1.Hewasillyesterdaysohedidn'tgotoschool.→Hedidn'tgotoschoolbecausehewasillyesterday.2.Hehaslosthisticket,sohewon'tgotothecinemathisevening.→Hewon'tgotothecinemat
8、hiseveningbecausehehaslosthisticket.
