What is a sentence using course?

You didn't say which meaning of the Word you want to use. A course can be a body of studies, like a college course. "I took a course in botany in school."

A course can be a direction or pathway. My course took me past the library.

A course can movement in time, or continuous movement. The course of history seldom runs smoothly.

A course can be a designated area of land. The Golf course is a good place for exercise.

A course can be part of a meal. The second course of our meal consisted of a salad.

Course can also be a verb, meaning to move swiftly. We will course like the wind in this new car.