a cart and horse was seen in the distance为什么不用were啊?

问题描述:

a cart and horse was seen in the distance为什么不用were啊?

注意一下句子
a cart and horse
而非a cart and a horse
a cart and horse意思就是一个物品了.我个人认为应该指的是马拉车.
既然是一个物品,也就是单数,也就要用was了
若它是a cart and a horse则是指一辆大车和一匹马.这时才是复数.
也就是在这时才用were