关于冠词在感叹句中的用法
题1.What____exciting news it is!
题2.what___________it is!
A.a heavy rain B.heavy rain C.a heavy rains D.heavy rains
题3.___________time we had at the party!
A.What wonderful B.What a wonderful C.How wonderful D.How a wonderful
答案中题1不需要填,题2填A,题3填B,请解释为什么他们之间的规律不同.