改为否定句：The boy does his homework on his own.改成否定句的时候是doesn't

改为否定句：The boy does his homework on his own.改成否定句的时候是doesn't Q:He often does his homework at home{改成否定句} A:He doesn't oft the boy did his homework yesterday改为否定句 he often does his homework on his computer 改为否定句 Tom does his homework at home 怎么改成否定句? her son does his homework after supper.改成 否定句 kangkang often does his homework at honme 改成否定句 TOM does his homework after school.改为否定句. jim always does his homework after school 改为否定句 Tom does his homework every day 改为否定句 tom does his homework at home 改为否定句 Tom does his homework at home.改为否定句