have no idea of

例句：

1. 1. I have no idea of how tofix this computer problem.
   我对如何解决这个电脑问题一无所知。
2. 2. She has no idea of whatshe wants to do with her life.
   她对自己想要做什么生活毫无头绪。
3. 3. Theteacher had no idea of the students'difficulties in learning English.
   老师对学生们学习英语的困难一无所知。