is 是BE动词吗

is 是BE动词吗 am is are是be动词吗? is是动词原形还是be是动词原形?will后是用is还是用be? Do 是不是Be动词do是不是be动词?Be动词是只有am,is,比较笨,QAQWhere____(be)she goi with 是be动词吗 will是be动词吗 will be是be动词吗? where is him 因为is是be动词的一种,也是动词,动词后应加宾格吧? she is playing the piano now (is playing 是be动词+实意动词—做谓语）吗? there +be动词 a packet of sweets.这里的be 动词是is还是are? Be quiet中的Be是be动词吗? there 后面的be 动词怎样才能分辨出是is 还是are?am会用到吗?