is还是are a lot of balls
问题描述：
is还是are a lot of balls
There _____(is/are) a lot of balls.
是选哪一个
答
a lot of balls 很多球,是复数,所以填 are
不明白的再问,多谢!真的吗？如果是单数呢？balls 是复数，当然用are 了 如果是单数或不可数名词就用is