有効です

is valid

→ 有効だ

phrase Rare #36,536

is valid Used for things such as tickets, contracts, and promises that remain valid or in effect.

JA: このカードは来月まで有効です。

EN: This card is valid until next month.

その切符は一週間有効です。

That ticket is valid for one week.

切符は何日間有効ですか。

How many days is the ticket valid for?

この契約は一年間有効です。

This contract is valid for one year.

先週あなたにした約束はまだ有効です。

The promise I made to you last week still stands.