1.The group of students are playing on the playground.2.This pair of trousers looks good on you.
问题描述：
1.The group of students are playing on the playground.2.This pair of trousers looks good on you.
第一句用复数,第二句用单数 为什么?还有那些像 group,pair,kind的次需要注意?
答
因为一组学生是复数,不止一个学生.但裤子是一条,所有用单数.
判断单复数主要还是看具体表达的意思.量词要和名词搭配得当就好了.