contribution可数吗贡献

可数名词常用修饰语：

通常用于修饰可数名词的'修饰语有some、any、many、few、a few、a lot of、lots of、plenty of、a great many、a great number of傍修饰。

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美国人。