1. benefit by 受益于。如：

　　People who stole did not benefit from [by]ill-gotten gains. 窃贼们并未从不义之财中得到好处。

　　Will the ADS patients benefit from [by] the new drug? 这种药对艾滋病人有效吗?

　　2. benefit sb 对某人或某物有益，使某人或某物受益。如：

　　Sea air will benefit you. 海风将对你有益。

　　What he said benefited all the students. 他说的话使所有的学生受了益。

　　3. be of benefit 有益处。如：

　　This dictionary is of great benefitto students. 这本词典对学生很有益处。

　　That experience was of great benefit to me. 那次经历对我很有益。

　　4. for the benefit of 为了……的利益或好处。如：

　　I've done it for her benefit. 我做此事是为了她的利益。

　　He gave up smoking for the benefit of his health. 他戒烟是为了对健康有益。

　　5. have the benefit of 得益于，占……的光。如：

　　He had the benefit of a good education. 他得益于良好的教育。