(Is, Are) that pair of new shoes Mary's? (需要讲解)

Is
that pair of new shoes 中心词是pair，所以用单数

are you two dancing?
Is the pair of you dancing?

are you all dancing?
Is the group of you dancing?

这里所强调的是“一双”
而不是“两只鞋”

is that pair of new shoes mary's ?

are those new shoes mary's ?

对比理解。希望回答对你有用！

用Is,that pair是单数

用Is,
that pair是一双，单数
这道题不能把shoes作为重点
可能你就是混淆在这了

Is
that pair of new shoes 一双新鞋,是一双,单数,所以用Is