分类：教育/科学-学习帮助
问题：急1.Jimplayschess____,ifnotbetter 
1.Jim plays chess ____ ,if not better than,DavidA.as well  B.as well as   .so well  D.so well as2.---what's wrong with your coat?  ---Just now when I wanted to get off the bus,the man next to me _____ on it.A.is sitting  B.had sat    C.sits   D.was sitting注:第2题答案是D,1.Jim plays chess ____ ,if not better than,DavidA.as well  B.as well as   .so well  D.so well as2.---what's wrong with your coat?  ---Just now when I wanted to get off the bus,the man next to me _____ on it.A.is sitting  B.had sat    C.sits   D.was sitting注:第2题答案是D,但我觉得那个男人"sit"在"when I wanted"这个动作前,应用过去完成时,即选B,为什么错?谢谢
回答：第一题as  well  as  ,表示一种语气,"也,还"的意思!整句是吉姆下象棋也还好,但是不如大卫下的好!
第二题:因为只有当表示过去的过去时才能用过去完成式,现在的语境是:他过去坐,现在还坐,表是一种动作的延续!所以选D