decide against
1. 作出不利于……的判决
The judge had decided against him.
法官的判决对他不利。
2. 决定不
I decided against leaving.
我决定不离开了。
decide on/upon
1. 考虑后决定
Finally, she decided on a pink dress.
最后, 她选定了一件粉红色的衣服。
习惯用语decide against...1.■决心不..., 决定不采取; 决定反对; 判决(某人)败诉decide between1.■于两者中选择其一decide for1.■作出有利于...的决定; 赞成做某事; 判决(某人)胜诉decide in favour of1.■作出有利于...的决定; 赞成做某事; 判决(某人)胜诉decide on1.■对...作出决定[决议]decide upon1.■对...作出决定[决议]