adj
1 [usu pred 通常作表语] ~ (aboutsb/sth) wrong in opinion 见解错误
*If I'm not mistaken, that's the man we saw on the bus. 要是我没认错人的话, 我们在公共汽车上看见的就是那个男子.
* You're completely mistaken. 你全错了.
2 wrongly judged; not correct 判断上错误的; 不正确的
*a case of mistaken identity 认错人的事
* mistaken ideas, views, etc 错误的想法、见解等
* I helped him in the mistaken belief that he needed me. 我误以为他需要我所以去帮助他了.
3 applied unwisely 应用不当的; 行事不智的
*mistaken kindness, zeal, etc 枉费的好心、热情等.

adj
be mistaken
if you are mistaken, you are wrong about something that you thought you knew or saw
　It can't have been my car. You must be mistaken.
　I thought he said 12 o'clock, but I might have been mistaken.
　We bought the rug in Turkey, if I'm not mistaken .
mistaken belief/idea/impression/view etc
a mistaken belief etc is not correct
　Marijuana has few withdrawal effects, and this has given rise to the mistaken belief that it is not addictive.
>mistakenlyadv