接続・逆接N2
〜にしろ、〜にせよ、〜にしても
whether... or... / even if... / no matter...
Structure
普通形/N + にしろ／にせよ／にしても
Explanation
Concessive: no matter which of the two alternatives, or even if..., the main clause holds. ① AにしろBにしろ lists two opposites; ② にしても means even if... (not)...
Examples
行くにしろ行かないにしろ、早く決めなければならない。
Whether we go or not, we have to decide quickly.
どんなに忙しいにしても、連絡くらいはできるだろう。
However busy you are, you could at least get in touch.
Note
にせよ is the most literary, にしても the most colloquial. Unlike にしても (standpoint), this use is concessive.