I found the clause "as English verbs go" in one of the answers on ELL:
In The Cambridge Grammar of the English Language (p.113-4), this is called "motional be", and it's very unusual as English verbs go. In this meaning, be appears only in perfect constructions [...]
It was later edited to say:
In The Cambridge Grammar of the English Language (p.113-4), this is called "motional be", and it has a requirement that's very unusual. In this meaning, be appears only in perfect constructions [...]
I tried hard to understand the meaning of the "as English verbs go" clause but failed. Will anyone clear the meaning of this?