買わなければなりません

must buy

→ 買う
phrase Rare #21,126
must buy A polite way to say that buying something is necessary.
JA: 明日までに新しい靴を買わなければなりません。
EN: I have to buy new shoes by tomorrow.

切符売り場で買わなければなりません。

You have to buy it at the ticket counter.

私たちは本当に新車を買わなければなりませんね。

We really do need to buy a new car, don't we?