请分析一下以how和what开头旳感叹句的句子成分和搭配~

问题描述:

请分析一下以how和what开头旳感叹句的句子成分和搭配~
如题~
请各给一个例句~

How nice she is!
What a nice girl she is!
但要注意不可数名词,如天气等,不加"a"
What nice weather it is!