That detective film is so amazing.(改为感叹句)

That detective film is so amazing.(改为感叹句)

What an amazing detective film
这里由what引导的感叹句， amazing前边是元音，所以用an，不用a，加上film是可数名词，所以加an。。。

what的句型 是 what + 名词，名词短语 ＋主语＋谓语

how的句型是 how+形容词/副词＋主语＋谓语

What an amazing detective film!