denken, glauben, der Meinung sein, unter dem Eindruck sein. Implizierend, dass die Person sich irrt / die Meinung falsch ist.

Wiktionary: https://en.wiktionary.org/wiki/以為

• to mistakenly believe; to be under the impression; to have thought that
• Beispiel: 一個愚昧的人總以為自己是對的
• Ignorant people always believe they are right.

allsetlearning: https://resources.allsetlearning.com/chinese/...

purpleculture: https://www.purpleculture.net/dictionary-deta...

• 以为 yǐ wéi (Trad.: 以為) to think (i.e. to take it to be true that ...) (Usually there is an implication that the notion is mistaken – except when expressing one's own current opinion.)