我们昨天在公园玩的太开心啦!
感叹句句型：
How+形容词+主语+谓语,例如How beautiful the girl is!
What+a/an+形容词+可数名词单数+主语+谓语,例如：What a beautiful girl she is!
What+形容词+不可数名词或可数名词复数+主语+谓语为什么had后面的词语加ing感叹句what提前后后面要用倒装。原来语序是We had great fun playing in the park yesterday. "have fun doing sth."固定搭配