主谓一致the pair of 的问题

Question

主谓一致，即：主语和谓语在人称、数、时态上相一致 a pair of +可数名词复数形式，pairs of +可数名词复数形式 1、There is a pair of shoes on the floor。How much are they？（they指代 shoes ） 2、There are two pairs of shoes on the floor。How much are they？（they同上） 3、How much is the pair of shoes ？ 主语 the pair of shoes中心为 the pair（单数），所以用is

Answer 1

有 pair时， 谓语根据pair 变。例如：There is a pair of shoes on the shelf.There are two pairs of shoes on the shelf.This pair of glasses is mine.