it is/was the first time +that+clause中从句用什么时态?

it is/was the first time +that+clause中从句用什么时态? It was for the first time that后面从句用什么时态 It is the first time that从句做什么成分 it is/was the first time that有什么用法 It is（was） the first time后的从句只能用完成时态吗? It is/was the first/second time that 这一句型中引导的是什么从句 可以省吗 This/It is the first/second … (序数词) time + that 从句 属于什么从句? it is the first time that是主语从句吗 IT IS THE FIRST TIME THAT 句型是什么从句 it is/was the time that it is/was the frist time that 后接从句用什 it will the first time后面从句谓语用什么时态? It is the first time that we travel. 在这个定语从句中