He is singing.is 做助动词协助主要动词singing 做谓语?这样想的话,就没有宾语了.另一个问题,一个句子中,能没有宾语成分吗?

He is not good at singing.划singing 划线提问 Is he singing 的否定回答怎么说? He is good at singing 改成感叹句He is good at singing改成________ ________he sings! I heard he is singing.是病句么?能不能改为I heard that he is singing. singing he a is song lovely 连词成句 his is he song favouurite singing 连词成句 He is good at singing and dancing 同义句两个 He is singing 这句话有表语吗? He is good at singing and dancing 同义句两个 He is singing a song to your mother.是什么意思? 英语翻译他在低声唱歌He is singing in a [ ][] my brother can () very well.He is () now.A.sing,singing B.singing,sing csing,sings the boy is singing Jane is good( )singing.( He singing is very well还是He sing is very well He is f____ as an actor and he is also famous f______ singing There is a boy in the room.He is singing合并为一句就这样 he is the only one of the students who is good at singing