* The use of technology in education is constantly evolving. (Here, "use" refers to the concept of applying technology, not a specific act of using it.)
* Their use of language was sophisticated and impressive. (Here, "use" refers to the skill or manner of using language.)
* The museum's use of light and shadow creates a dramatic effect. (Here, "use" refers to the artistic technique of manipulating light.)
The key to recognizing "use" as an abstract noun is to look for situations where it refers to a general concept, idea, or principle, rather than a specific action.