what +a/an +adj+n+主语+谓语
what+adj+n复数+主语+谓语
what+adj+n不可数+主语+谓语
how +How+形容词（副词）+主语+谓语
What a nice present it is!它是一件多么好的礼物啊!What an interesting book it is!它是一本多么有趣的书啊!
What fine weather it is today!今天天气多好啊!What important news it is!多重要的新闻啊!
How careful she is!她多么细心啊!How fast he runs!他跑得多快啊!
How beautiful a girl she is!＝ What a beautiful girl she is!
What delicious cakes these are!＝ How delicious these cakes are!