A: Why did you call me by the wrong name?
A：你为什么叫错我的名字？

B: I'm so sorry, I mistook you for your twin brother.
B：非常抱歉，我把你误认为你双胞胎兄弟了。

1) 误解某人

2) 弄错某事

3) 误认为

4) mistake的过去式用法

5) 认错人

1. 误解；误认为

2. 弄错

verb

1. to understand someone or something incorrectly

2. to identify someone or something wrongly

Synonym: misunderstand, misinterpret