I want five apples.They are three yuan.

题目

I want five apples.They are three yuan.
I also want ten bananas,five pears and two watermelons.That's fifteen yuan.为什么上句主语用的是they,而下句则用that,这里的单复数怎样来判断?

答案

上面的they是代指五个苹果,而下面的that是代指ten bananas,five pears and two watermelons这个整体.这个整体式作为一个单数来看待,所以用单数.