误以为

mistakenly think, mistakenly believe

verb Rare #27,852
mistakenly think, mistakenly believe Often followed by a clause stating what someone wrongly believes.
CH: 我误以为你已经回家了。
EN: I mistakenly thought you had already gone home.

女主角什么也没做,却被误以为是目击者的杀手追杀——可她根本不是目击者。

The heroine did nothing, yet she’s being hunted by a killer who thinks she’s a witness—but she isn’t one at all.

你曾让我误以为你爱我

You once led me to believe that you loved me.

— 红磨坊 (2001)

他们误以为我们是恐怖分子,以为我们有武器

They mistakenly thought we were terrorists and that we had weapons.

— 芭萨提的颜色 (2006)

我误以为是人类的小孩子

I mistakenly thought it was a human child.

— 风之谷 (1984)