1.benefit的基本意思是“受益”,强调改善或优化个人状况(如身体、智力、道德或精神状态),也可表示对某人的目标的实现有所促进。用作不及物动词时,意思是“得益”; 用作及物动词时,意思是“有益于”。
2.benefit常与介词from或by连用,表示“从中受益”。

benefit by(v.+prep.)
通过…获益 gain advantages, pleasure or profit by (sth)
▲benefit by sth
We benefit greatly by this frank talk.这次坦率的谈话使我们受益匪浅。
We benefit by many visits to the library.我们常到图书馆去,收益很大。

benefit from(v.+prep.)
从…中获益 gain advantages, pleasure or profit from (sth)
▲benefit from sth/v-ing
We benefited from our visit to the library.我们常去图书馆,收获不小。
Who is most likely to benefit from the old lady's death?谁最可能因那老妇人之死而获益呢?
These small businesses have benefited greatly from the fall in interest rates.小企业因利率下降而得到了很大的好处。
We benefit from daily exercise.我们从每天做操中得到益处。
He thought he would benefit from going to school.他认为上学对他有好处。
I benefited a lot from his advice.他的忠告使我受益匪浅。

benefit through(v.+prep.)
从…中获益 gain advantages or pleasure through (sth)
▲benefit through sth
The English boy's Chinese benefited incalculably through his long association with Chinese children.在跟中国孩子长期接触中,那个英国男孩的中文大受裨益。

用作不及物动词
▲S+～(+A)
The bank suffers while its officers benefit.银行遭受损失,而它的高级职员们却得到好处。
用作及物动词
▲S+～+n./pron.
Moderate exercise will benefit you.适当的锻炼对你有好处。
The sea air will benefit you.海洋空气有利于你。
It's an expensive investment but it will benefit the company in the long run.这是一项花费很大的投资,但从长远看来,它将对公司有好处。
The railway will benefit several provinces.这条铁路有益于几个省。
Advances in science benefit all humanity.科学的进步有益于全人类。
A summer at the seashore benefits the entire family.在海滨消夏,全家受益。

benefit, avail
参见avail条。
benefit, profit
这组词都是“对…有益”“受益”的意思,前者侧重表示改善或优化个人状况,后者强调物质方面的收益。在表示使某人(知识、财富)的贮存和利润增加时,多用profit而少用前者。

在现在时和过去时的句子中, benefit一般不接反身代词和人称代词作宾语,如不说The teacher's advice benefited John.而多说John benefited from the teacher's advice.

1.benefit用作名词的基本意思是“好处”,可指任何形式的“益处”,包括物质方面和精神方面的益处。
2.benefit视其含义的具体或抽象，可用作可数名词或不可数名词。

for (the) benefit of
为…的利益; 为惩戒…in order to help, guide, instruct sb
The money is to be used for the benefit of the poor.这笔钱用来为穷人谋福利。

give sb the benefit of the doubt
因证据不足而承认无罪 accept that sb is innocent, right because there is no clear evidence to support one's feeling that he may not be
I won't make up my mind about people; I'm always trying to give them the benefit of the doubt.我不会随便给人家下结论,在没有确证之前,我一向不轻易相信。

The drug has little benefit on his health.这种药对他的健康没有好处。
Are you entitled to unemployment benefit?你有资格领取失业救济金吗?
The new hospital will be a great benefit to the town.新建的医院会给这座城市带来极大的好处。

benefit, advantage, interest, profit
参见advantage条。

［同义词］ n. advantage, help, profit
［反义词］ n. disadvantage