What+a/an+形容词+可数名词单数(+主语+谓语)!
What a sweet (形容词)apple (可数名词)(it (主语)is (谓语))!
What a beautiful girl (she is)!多么漂亮的女孩!
What an interesting book (it is)!多有趣的书啊!
(一)What+形容词+不可数名词(+主语+谓语)!
What pleasant weather!多好的天气啊!
What interesting news (it was)!多有趣的消息啊!
(二)What+形容词+可数名词复数(+主语+谓语)!
What beautiful flowers (they are)!多漂亮的花啊!
What fresh apples (they are)!多新鲜的苹果!