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：____ careless a boy you are!A.How 　　B.What a 　　C.What我常见的说法：What a careless boy youar!How careless you are!How careless the boy is! 感叹句：what/HOW careless a boy you are!用what 还是HOW原因 18____ careless a boy you are!A.How B.What a C.What选什么 为什么啊 ____ careless a boy you are!答案给的是what啊 ,也有很多人选填how 的, 反义疑问句Tom is a careless boy,_______? what a careless boy Robert is!这句话语法对吗 谁能帮我把这两句改成感叹句.what或how开头.Simon is a helpful boy. He is such a careless child. Tom is a careless boy.he mad a lot of m ______Tom is a careless boy.he mad a lot of m ____________in his homework 将下列各句改为由what和how引导的感叹句The birds is very lovely,The studengts are so excited,He is such a careless child,Simon is a helpful boy,The music is very beautiful He is a careless boy and often makes mistakes.makes mistakeszuode作的什么成分 1.The boy was careless.He fell into a hole.(into 的反义词) What a clever boy!How clever a boy! 1.The boy was careless.He fell into a hole.(into 的反义词)Then his father helped him come ___it -----------careless he is A.what B.how C.so much D.how much 请给讲讲为什么 How to becom a happy boy How a nice boy he is 改错 how clever a boy he is!how clever he is!