the first time 和for the first time的区别

the first time是连词，连接两个句子，而for the first time是介词短语

例句：
that was the first time he went to work.
on that day, he went to work for the first time.

the first time作连词，可以连接两个句子
for the first time好像是作副词的
两者的词性不同。