Examples
I was mistaken for a salesman.
Source: Tatoeba
She mistook my brother for me.
Source: Tatoeba
I mistook him for Mr. Brown.
Source: Tatoeba
I mistook Ann for her sister.
Source: Tatoeba
He's often mistaken for a student.
Source: Tatoeba
I mistook him for his brother.
Source: Tatoeba
He mistook me for my mother.
Source: Tatoeba
She mistook me for Mr. Tamori.
Source: Tatoeba
She mistook me for my brother.
Source: Tatoeba
He took me for an Englishman.
Source: Tatoeba
You may have mistaken Jane for his sister.
Source: Tatoeba
He mistook me for my twin brother.
Source: Tatoeba