Simple and straightforward:
* The clown's antics amused the children.
* The comedian's jokes amused the audience.
* The funny movie amused me.
With a bit more context:
* The old man amused himself by watching the squirrels play in the park.
* The artist amused her friends with her witty anecdotes.
* The teacher tried to amuse the students with a silly story.
In a more formal context:
* The guests were amused by the elegant decorations.
* The speaker's presentation was amused by the audience's laughter.
* The author's use of satire amused the reader.
With different tenses:
* The magician amused the crowd with his illusions.
* The children are amused by the playful puppies.
* I was amused by the unexpected twist in the plot.
Remember that "amuse" can be used to describe something that is entertaining or humorous, and it can also be used to describe something that is simply interesting or engaging.