Cách sử dụng
The expression "work at" is used to describe where someone works or the type of work they do. This can be used in various contexts, such as in a sentence like "I work at a store" or "She works at a hospital." It can also be used to describe a person's efforts towards achieving a particular goal or improving in a certain area, such as "I'm working at improving my English skills." Essentially, "work at" is a way to indicate the place or activity where someone spends their time and energy to earn a living or make progress towards a goal.