N1 Grammar Course

Teacher

Marshall

～ともあろうものが

Usage:

Noun + ともあろうものが

Meaning:

「～ともあろうものが」means “I can’t believe that…”.
It’s a grammar rule used to state that a person in a certain profession or position did something bad.

Note:
It’s usually used with 政せい治じ家か、警察官けいさつかん、弁べん護士ごし、教きょう師し、医い者しゃ.

Examples:

警察官けいさつかんともあろうものが、強盗ごうとうを働はたらくとは。
I can’t believe that he/she robbed someone even though he/she is a policeman/policewoman.

弁べん護ご士しともあろうものが、依い頼らい者しゃの金かねを横おう領りょうするとは。
I can’t believe that he/she embezzled the client’s money even though he/she is a lawyer.