第1个回答 2011-12-03
现在进行时:he is doing his homework
一般现在时:he does his homework all by himself
将来时:he will do his homework
完成时:he has done his homework
过去进行时:he was doing his homework at that time
过去完成时:he had done his home work when i came home
一般过去时:he did his homework at school yesterday本回答被网友采纳