influence究竟是可数名词还是不可数名词

1.不可数名词 n.[U] 影响；作用
power to change what someone believes or does
· My advice has no influence on his actions.
我的劝告没有影响他的行动。
· He has great influence with the government.
他对政府很有影响力。
· The idea has influence among statesmen.
这种观点在政治家中间有影响。
· The characters on the paper came out under the influence of the heat of the fire.
经火烤之后，纸上的字迹显露了出来。

2. 不可数名词 n.[U] 势力；权势
power that someone has because of his money,job,etc.
· Tony got a job in the factory because his uncle had influence there.
托尼在那个工厂里找到了一个工作，因为他叔叔在那里有权势。

3 可数名词 n.[C] 有影响或权威的人或事
person or thing that can change someone or something
· Dick is a big influence on his young brother.
迪克对他弟弟有很大的影响。
· The teacher has established an influence over his pupils.
这个教师在学生中树立了威信。
· Television has a strong influence on people.
电视对人有很大的影响。
· Heredity and environment are influences on character.
遗传和环境是影响性格的因素。
· Will you please use your influence with him not to do it?
请你运用你的影响叫他不要做那事好吗？