Adjective:
promoting or enhancing well-being;an arms limitation agreement beneficial to all countries
the beneficial effects of a temperate climate
the experience was good for her
beneficial，advantageous，profitable这些形容词均含有“有益的，有利的”之意。
beneficial侧重对健康、身心或事业有益。
advantageous多指能直接导致相对优势或有助于达到目的的事。
profitable多用于指能获得实用的或可获利的事。
用作形容词 adj.
～+名词beneficial effect有利的影响副词+～economically beneficial经济上有益的highly beneficial非常有益的～+介词beneficial for对…有利的beneficial to对…有利的
近义词 goodusefulhelpful反义词 uselessunwholesome
用作形容词adj.
用作定语
～+ n.His holiday has had a beneficial effect.假期对他大有好处。
用作表语
S+be+～I hope your holiday will be beneficial.我希望你的假期会对你有益。S+be+～+ prep .-phraseAll these factors proved to be beneficial for the opposition.所有这些因素都对反对派有利。
It is beneficial for the speedy movement of passengers and cargo.这有利于快速客货运输。
It is beneficial to the society and the people.这有益于社会，有益于人民。
Daily exercise is beneficial to your health.每天锻炼有益于你的健康。
The fall in prices will be beneficial to small businesses.价格的下跌将有利于小企业。S+be+～+to- vIt would be beneficial to keep abreast of developments in Asia.随时了解亚洲的发展是有益的。
用作宾语补足语
S+V+O+～I found this treatment very beneficial to my health.我发现这种疗法对我的健康很有益。
adj.形容词
beneficial的基本意思是“有益的,有利的”,可指有利于财政方面的富足,更常指有利于精神或身体健康。
beneficial在法律术语中可作“有使用权的；有权益的”解，此时不用于比较等级。
形容词100%
用作形容词It's a beneficial result to us.对我们来说那是有利的结果。
Word of mouth advertising is the most beneficial.口碑广告是最有利的。