Explanation
'When it comes to...', emphasizes a change of situation or status.
Formation
Noun + ともなると
Detailed explanation
Noun + ともなると indicates a change of state or circumstances once that noun becomes relevant or once one attains that position. It conveys that 'once it’s X, things change' or 'when it comes to X...'.
Examples
Kurisumasu to mo naru to, machijuu ga kirakira to kagayaite miemasu.
When it comes to Christmas time, the whole city sparkles.
Kodomo ga jibun no ayamachi o mitomeru to mo naru to, hanashi wa betsu desu ne.
When a child admits their mistake, that’s a different story.
Natsu yasumi to mo naru to, umibe wa kankoukyaku de afurekaerimasu.
When summer vacation comes, the seaside is filled with tourists.
Shiken shuukan to mo naru to, toshokan wa itsumo yori konzatsu shimasu.
When exam week arrives, the library gets more crowded than usual.
Practice
Grammar content sourced from hanabira.org.