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语法2-标点的用法,句号（period）:,必须各自构成句子，其逻辑关系为因果关系或后句对前句的说明关系。例句：1.IcouldnotgetthroughHannahyestedayevening.Herbrotherwastalkingonthephoneallthetime.(因果关系),2.Heaskmeaquestion.Ianswerhim.(从属关系)3.Heisveryhard.Howeverhedidnotgetagoodmarkinthelastexam.(转折关系),分号（semicolon）:,动词必须各自构成句子，其逻辑关系为后句对前句的说明。例句：1.Wecouldhavewalkedtothestation;itwassonear.(因果关系),2.Veniceisbuilton117island;ithas150canalsand400bridges.(从属关系)3.Peoplemakehistory;usualpeoplemakehistoryinteresting.(并列关系),逗号（comma）:,如果两个动词各自构成的句子要用逗号连接，其中一个句子要用连词，其逻辑结构以连词意义为标准；否则其中一个动词要用非谓语动词。例句:1.Ithoughtwewouldbelaterfortheconcert,butweendedupgettingthereaheadoftime.(转折关系)2.Standingoverthere,andyouwillbeabletoseetheoilpaintingthere.(并列关系),3.Itmusthaverainlastnight,forthegroundiswet.(因果关系)4.Theprofessor,alongwithhisassistant,isworkingontheprojectdayandnighttomeetthedeadline.(伴随关系),谢谢观赏！,
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