it is the first time that 是状语从句还是定语从句,that可省略吗?

问题描述:

it is the first time that 是状语从句还是定语从句,that可省略吗?
It is the first time I have met him.中the first time 又不是充当宾语,why可以省略?

要看吧 主要看从句是什么 要看在从句中做什么成分
还有可能是强调句