What+a+形容词+名词单数(+主语+动词)!

　　Whatabeautifulgirlsheis!

　　What+形容词+名词复数(+主语+动词)!

　　Whatbeautifulgirlstheyare!

　　What+形容词+不可数名词(+主语+动词）!

　　Whatdeliciousmilkitis!

　　How+形容词/副词(+主语+动词）!

　　Howbeautifulthisgirlis!

　　以上有点麻烦,简单记：

　　把感叹句从后面把主语和谓语（句子）挑出,然后看前面的感叹部分,若有名词,就用what；若无,就用how.但是注意单数时候：whatacarefulstudentsheis!=Howcarefulastudentshis!

　　练习：

　　_____niceitistoday!

　　_____anicedayitistoday!

　　_____uglyanimalstheyare!

　　Keys:How;What:what

　　Whatabigboxitis!==Howbigtheboxis!

　　Whatniceweatheritis!==Hownicetheweatheris!

　　Whatcleanroomstheyare!==Howcleantheroomsare!