何とかしないと

I've got to do something

→ 何とか
phrase Rare #26,411
I've got to do something An informal expression meaning that something must be done to solve or improve a situation. The subject is often omitted, and the phrase can also imply “if we don't do something...” depending on context.
JA: この問題、何とかしないと。
EN: I've got to do something about this problem.

何とかしないとそうか

We have to do something about it. Oh, I see.

— ワン・バトル・アフター・アナザー (2025)

何とかしないと・・・

I've got to do something...

— 預言者 (2009)

何とかしないとお主若く勇敢じゃ

We have to do something... You’re young and brave...

— ロード・オブ・ザ・リング/二つの塔 (2002)

何とかしないとカール弟が殺されたと言って呼ぶんだ

We have to do something, or they’ll call Carl and tell him his little brother was killed.

— ダイ・ハード (1988)

何とかしないと帰るよ

You’d better do something, or I’m leaving.

— マルホランド・ドライブ (2001)