How careless a boy you are!这里哪个是主语?

How careless a boy you are!这里哪个是主语? 感叹句：what/HOW careless a boy you are! ____ careless a boy you are!答案给的是what啊 ,也有很多人选填how 的, 感叹句：____ careless a boy you are!A.How 　　B.What a 　　C.What 18____ careless a boy you are!A.How B.What a C.What how careless _____!A.you both are how careless you both are! How do you spell it 这里how 是谓语 主语等哪个 还有问 系动词和助动词和情态动词可以作为实义动词 the more careless you are是倒装吗 How careless you are to()the stove()while you're away!Really 主语是哪个?The boy that you saw yesterday on TV was Prince Harry. 求一首英文歌曲 里面有句歌词是 how are you doing gril how are you doing boy