co-workers

My co-worker helped me finish the report before the deadline.

用法提示：co-worker 是名词，指一起工作的人，此处作主语。

I usually have lunch with a few co-workers in the cafeteria.

用法提示：co-workers 是 co-worker 的复数形式，作介词宾语。

She asked her co-worker to cover her shift on Friday.

用法提示：co-worker 作宾语，表示同事关系。