分类：教育/科学-外语学习
问题：新概念英语第三册第五课疑难解答（急需支援）Thisisfromt 
ThisisfthethirdbookofNewConceptEnglish.Thepersonwhoanswerthequestionhadbetterlearnthisbookoryouarefamiliarwiththepassage.Ihopeyoucanfivemetheperfertanswer.Myquestionis:()thefirstsentence, earefourchoices:(a)Reading(b)Havingread(c)Heread(d)BeingreadingWhichshouldbetherightone?ThisisfthethirdbookofNewConceptEnglish.Thepersonwhoanswerthequestionhadbetterlearnthisbookoryouarefamiliarwiththepassage.Ihopeyoucanfivemetheperfertanswer.Myquestionis:()thefirstsentence, earefourchoices:(a)Reading(b)Havingread(c)Heread(d)BeingreadingWhichshouldbetherightone?P.S,theoriginalsentencein ,youcantellmesomethingaboutthegrammarfocusorthesentencestructure.Thankyouverymuch.
回答：     I think the right answer is (b),right?
     个人分析  A:A用的是现在进行时,但编辑者(the editor)是已经看过了第一句才有下面的拒绝,强调的是一般完成时态;  C:C不符合一般完成时,再者犯了低级错误,应是He thinks 第三人称加S;  D:D用的是被动时态,不符合一般完成时,此句的主语是the editor,而完成看句子这个动作是编辑者,即主语自己主动做的,不是被动的.So B用对了时态,你又会不会问道:为什么用Having,而不用Have呢?因为放在句子首位的动词一般后加-ing起一个引导的作用.Have you got it?
    (Bevelive it or not!)