比較N1
〜ともあろうものが
being of such standing... / for someone of... to... (disapproval)
Structure
N + ともあろうものが
Explanation
N + ともあろうものが: for a person of such standing to do...; criticism or surprise.
Examples
大学教授ともあろうものが、事実をねじ曲げるとは。
For a university professor to twist the facts—unthinkable.
一国の首相ともあろうものが、軽率な発言をするとは。
For a prime minister to make such a careless remark!
Note
The main clause is a behavior unbefitting the status, with criticism or disappointment.