Grammar › N1 · 01 Conditions and hypotheticals
〜ともなれば: when it comes to; once it is
N1 · 01 Conditions and hypotheticals
The same idea as 〜ともなると: at an important stage or level, it naturally becomes so.
Noun or verb + ともなれば. A little more formal. The second part states a natural change or expectation. Often used with age, position, big events, and a season.
Examples
受験生ともなれば、遊んでばかりはいられない。
When you become an exam candidate, you cannot just keep playing around.
大舞台ともなれば、誰でも緊張するものだ。
When it is a big stage, everybody gets nervous.