当contribution作为抽象概念“贡献”讲解时，它是一个不可数名词，不需要使用复数形式，但可以使用不定冠词a，表示一次性的行为。常用的短语是make a contribution to...，意为对......作出贡献。可数名词常用修饰语通常包括some、any、many、few、a few、a lot of、lots of、plenty of、a great many、a great number of等，用于修饰可数名词。例如：I have lived here for many years. 我在这里住了好多年了。Remember to buy some stamps, won't you? 记着买些邮票好吗？Plenty of shops open on Sunday mornings. 周日上午很多商店营业。A great many people were at the meeting. 很多人参加了会议。A great number of our students are American. 我们的学生中有许多是人。

下面是一些使用contribution的双语例句：

Alan has made an immense contribution to the sport. 艾伦为这项体育运动作出了巨大贡献。

His contribution is immeasurable. 他的贡献无法衡量。

The laxity of export control authorities has made a significant contribution to the problem. 出口控制部门工作懈怠，是造成此问题的重要原因。

I'd like to thank our sponsors for their generous contribution. 我要感谢赞助商们的慷慨解囊。

With thanks to English Nature for their generous contribution of selected images used in this publication. 感谢英国自然署为这本出版物慷慨贡献的精美图片。