When I met him last week,（状语从句）it was the first time we had seen each other since wo were at shcool,We have two years no see,so we were very happy and wo talk from nigth to morning about these two years of what one sees and hears.
我上个星期见到他了,那是我们从学校毕业后的第一次见面,我有两年的没见面了,因此我们很高兴并且从晚上聊到了第二天早上,关于这两年来的所见所闻.