bark up the wrong tree

• vi. 弄错(认错目标；错怪了人；花错精力)

bark up the wrong tree的用法和样例：

例句

用作不及物动词 (vi.)

1. He had been wrong about the wolf.
   他一直错怪了这匹狼。
2. She thought I'd made the report to the police,but she was barking up the wrong tree.
   她认为我已报了警，然而她错怪了人。