95-5-36 语法题求助

ellie

36. The early periods of aviation in the United States was marked by exhibition flights made by individual fliers or by teams of performers at country fairs.

我想A是错的，但是B是否对呢？

LES

B对的。

exhibition 这里说明flights的属性，所以用的是名词形式。

ellie

谢谢LES，但是有的时候比较糊涂：什么时候可以名词修饰名词，什么时候用形容词修饰名词。好像也看不到有个规则。