he have no finished his homework,he doesn't finish his homew

没有he have no finished his homework之说,这样说是不符合语法的.可以说he have not finished his homework. he didn't finish his homework是he doesn't finish his homework的过去式. he didn't finish his homework表示在以前发生过的对话时说明的那个时候他还没做完作业. he doesn't finish his homework现在（说话当时）还没完成作业.