____cold weather it is?选哪个how,how a ,what,what a

选what
what cold weather it is
不用a 因为weather 不可数
如果用how
how cold the weather is
不加it
感叹句通常有what,how引导,表示赞美、惊叹、喜 悦、等感情.
what修饰名词,how 修饰形容词,副词或动词,感叹句结构主要有以下几种：
掌握它的搭配,即掌握了感叹句的重点.
How +形容词+ a +名词+ 陈述语序
How+形容词或副词+ 陈述语序
What +名词+ 陈述语序
What+a+形容词+名词+ 陈述语序
What+ 形容词+复数名词+ 陈述语序
What+ 形容词+不可数名词+ 陈述语序
也就是what + a/an + adj.+ n.+ 主语 +谓语
how + adj.+ a/an/the + n.+ 主语 +谓语
How clever a boy he is!
How lovely the baby is!
What noise they are making!
What a clever boy he is!
What wonderful ideas (we have)!
What cold weather it is!
感叹句的省略形式为：
What a clever boy (he is)!