he can't be reading这个句子的时态结构he can't be readinghe must be sleeping 我有点不太理解 这指的应该是正在进行时但是正在进行时的结构是be+V-ing形式 那么这种结构形式怎么解释呢?

he can't be her father,-----he? he can't be reading这个句子的时态结构he can't be readinghe must be sleeping 我有点不太理解 这指的应该是正在进行时但是正在进行时的结构是be+V-ing形式 那么这种结构形式怎么解释呢? can't be doing的意思!不是有can后面的动词恢复原形吗?为什么还有ing 如:He can't be reading难道是有be动词,不管前面有什么单词,都要+ing吗? Do you know where Tom is?He was in the reading room just now.He ____ there now.Do you know where Tom is?He was in the reading room just now.He ____ there now.A,will be B,is C,must be D,can′tD是can′t be！打错啦啊⊙﹏⊙b汗 he can't be at school反义疑问句he can't be at school.反义疑问句 Nothing can't be figured outT he past just can't be reached again.翻译 He can't be at home.为什么can't后要加be? 11. He can’t be her father, _____ he? A. is B. isn’t C. can D. can’t can't be 和 must’t be有什么区别?比如，he can't be here.he mustn;t be here 有什么区别？ He can't be at school,___?A.is he B.isn't he C.can he D.can't he He can't be at school, ____ ? A.is he B. isn't he C.can he D.can't he 选哪个?为什么? .He can't be at school,____ A.is he B.isn't he C.can he D.can't he请帮忙解释为什么选A. They ___out of the reading-room .A.needn't B.can't take C.mustn't be taken D.can be taken i dont believe him,he can,t be serious这句话怎么理解,为什么用can't,shouldn't must't不行吗 He can't be her father.这句话的反义疑问句怎么改 He must be fifty,________?A.mustn't he B.can't C.must he D.mayn't he Jim gave up his highly-paid job and became a librarian.can you believe it ____.He like reading ,after allA I don't doubt it B I'm so sorry C that's ok D you must be kidding i think he must be a teacher,isn't he 这句反义疑问句为什么这样变?i think he must be a teacher,isn't he 这句反义疑问句为什么这样变?为什么不是mustn't he?i think he can be a teacher反义疑问句是不是i think he can be