There are 11 boys piaying in a football team为什么用playing

问题描述:

There are 11 boys piaying in a football team为什么用playing

piaying in a football team是现在分词短语作后置定语的,由于其逻辑主语 11 boys 和play 是【主动关系】,故用现在分词
等于:
There are 11 boys 【who are】piaying in a football team