The oils in fish such as salmon are very good for you.fish 为什么是用are

问题描述:

The oils in fish such as salmon are very good for you.fish 为什么是用are
我印象中这种不可数名词 food candy 什么的应该是用is,为什么这里用are

这里不是fish做主语,是oils做主语.这是复数形式,所以谓语动词用复数形式are