it is the third time that you have been late this month 什么从句

问题描述:

it is the third time that you have been late this month 什么从句

定语从句.如果把it is...that去掉,能构成一个完整的句子,则是强调句,反之是定语从句。另外,判断一个句子是否是定语从句,好像没有你那样的标准啊