How can you use the word learned in a sentence?

Here are some sentences using the word "learned" in different ways:

* Past Tense: I learned how to ride a bike when I was five years old.

* Past Participle: He has learned a lot about history since starting college.

* Adjective: The learned professor gave a fascinating lecture on ancient civilizations.

* As part of a phrase: She is a learned and respected member of the community.

* In a passive sentence: It was learned that the company was facing financial difficulties.

Let me know if you'd like more examples or want to explore specific uses of "learned"!