Question

it was the first time in a year and a half that I had seen the night face to face这句子是什么句型

结构是什么

Answer 1

这是It + is/was+ the 序数词 time + that从句，从句需要用完成时。
如果be动词是一般现在时is时，从句用现在完成时；
如果如果be动词是一般现在时过去时was时，从句用过去完成时。

例如：
It is the first time that I have come to China. 这是我第一次来中国。
It was the second time that I had seen that movie. 这是我第二次看那部电影。