There are ( ) on the ground.A.two rolls of film B.two rolls of films的答案是什么
问题描述：
There are ( ) on the ground.A.two rolls of film B.two rolls of films的答案是什么
我选的是A
答
two rolls of films可我错了这里的film是胶卷的意思，不可数名词。一卷胶卷的叙述是one roll of film.如果是两卷胶卷当然就在roll后加s了。就好像two pieces of news.