肯定有人

there must be someone

→ 肯定
phrase Rare #22,388
there must be someone Expresses strong certainty that someone exists, is present, or is involved. It is often followed by a location or action, such as 肯定有人在这儿 (there must be someone here).
CH: 这么晚了还亮着灯,肯定有人在家。
EN: The lights are still on this late, so there must be someone home.

肯定有人认识

Surely someone knows them.

— 满江红 (2023)

肯定有人在这儿

No, someone must be here.

— 空房间 (2004)

她不是一个人肯定有人和她同行

She isn’t alone; someone must be accompanying her.

— 看不见的客人 (2017)

肯定有人

There must be someone.

— 调音师 (2018)

肯定有人在这儿

Someone must be here.

— 空房间 (2004)