Definition
to wrongly identify someone or something as another person or object
误将…认为是
I mistakenly took that boy for my brother.
我误以为那个男孩是我弟弟。
She often mistakes my friend for my boyfriend.
她经常把我的朋友误认为是我的男朋友。
Many people mistake this bird for a rare species.
许多人把这只鸟误认为是稀有物种。