a bee in one's bonnet的用法和样例：
- He has a bee in his bonnet about health foods.
- My brother have a bee in his bonnet about modern art.
- Our teacher has a bee in his bonnet about punctuation.
- Jones has a bee in his bonnet about illnesses.
- She sure has a bee in her bonnet today!
- have a bee in one's bonnet冥思苦想,神精失常,...