fix on／upon
1．make sth．stay firmly in place on固定
The tail is fixed on the model plane with nails，so it can't come off．尾部用钉子固定在飞机模型上，这样就不会脱落。
Can you fix this lid on？ It keeps coming off．你能把这盖子安上吗？它总掉。
Please fix on a new zip for me；the old one's broken．请替我装付新拉链，那付旧的坏了。
2．choose；select选定
We've fixed on starting tomorrow．我们选定明天出发。
The date for the meeting has not yet been fixed upon．开会日期尚未决定。
They fixed on me to do the work．他们选我做这工作。
What makes you fix upon that book？你怎么会决定采用那本书的？
3．determined on决定
Jim seems fixed on going abroad for his holiday．吉姆看来已决定出国度假。
4．direct（one's eyes or attention）steadily at； focus one's gaze or attention on凝视；专心于
Mary kept her attention fixed upon the speaker．玛丽始终注意演讲者。
He fixed his eyes on me．他注视着我。
She fixed her affection on him．她钟情于他。
My father often told me to fix my attention on what I was doing．我父亲常常要我专心于我所做的事情。
5．settle responsibility（authorship，blame，etc．）判定责任
The crime was fixed on him．他被判有罪。