Simple:
* The children were eager to open their presents.
* She was eager to start her new job.
With Adverbs:
* He was extremely eager to learn more about the subject.
* They were very eager to help.
With Prepositional Phrases:
* The dog was eager for a walk in the park.
* She was eager to hear the results of the exam.
In Figurative Language:
* The team was eager as a beaver to get started on the project.
* She was eager to devour the news.
In a Negative Context:
* He was eager to escape the boring meeting.
* She was not eager to face the consequences.
As a Noun:
* The eager in her eyes was unmistakable.
Remember, "eager" typically describes a strong desire or enthusiasm for something.