influence v. 影响
have effect on
Eg.: Literature and art have great influence of people’s idelogy.
Don’t be influenced by bad examples.
under the influence of受…影响
Eg.: We are under the influnce of advertisements.
have influence over sb 有左右某人的能力
Eg.: A teacher has influence over his students.
exercise influence on sb's behalf 为某人而尽力
on sb's behalf 为某人的利益
Eg.: The boss exercises influence on his employee’s behalf.
区别：influence / affect
influence:通过劝说，行为，榜样来改变一个人的行为或思想，是潜移默化的影响力
affect: 对......产生不良影响
