I came across a man ( )I think is pleasant to work withi think是插入语,a man在定于从句中是做主语的,work with的介宾又是甚么?a man在定于从句中是做主语的嘛，虽然我知道work with的介宾是a man，但有做主又做宾语？要真是这样为避免重复work with后应有代词指代a man才对呀

I came across a man ( )I think is pleasant to work with
i think是插入语,a man在定于从句中是做主语的,work with的介宾又是甚么?
a man在定于从句中是做主语的嘛，虽然我知道work with的介宾是a man，但有做主又做宾语？要真是这样为避免重复work with后应有代词指代a man才对呀