買わなければなりません

must buy

→ 買う

phrase Uncommon #19,148

must buy A polite expression meaning “have to buy.” The pattern ～なければなりません literally means “if [one] does not..., it will not do,” but is used to express obligation. 買わねばなりません is a more formal equivalent.

JA: 明日までに教科書を買わなければなりません。

EN: I have to buy the textbook 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.

私は牛乳をいくらか買わなければなりません。

I have to buy some milk.

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?

私は彼女のために花を買わなければなりません。

I have to buy flowers for her.