彼が戻るまで

until he returns

→ 彼
phrase Rare #44,462
until he returns までは used to mark the point in time up to which something continues or remains true.
JA: 彼が戻るまでここで待ちます。
EN: I’ll wait here until he returns.

彼が戻るまで待とう。

Let's wait until he comes back.

彼が戻るまで私はここで待ちます。

I’ll wait here until he comes back.

彼が戻るまで待つんだ

Wait until he comes back.

— 預言者 (2009)

彼が戻るまで決定できない。

We can't make a decision until he returns.