用coat 还是coats.

题目

用coat 还是coats.
coat是 可数名词.
用two piece of来修饰,那个对啊.
A.two pieces of coat.
B two piece of coats
C two pieces of coats.

答案

用户名取得好.
coat作可数名词时,复数是
选C,two pieces of coats.
例: there boxes of books.