mistake shadow for the substance

例句：

1. 1.I made a mistake when I forgot to bring my umbrella.
   我忘记带伞时犯了个错误。
2. 2.He was mistaken for a thief by the police.
   警方将他误认为是小偷。
3. 3.She mistook him for her brother.
   她把他错当成了她的哥哥。