Descriptive:
* The friendly librarian helped me find the book I was looking for.
* The neighborhood has a friendly atmosphere.
* The dog was friendly and wagged its tail excitedly.
Adjective + Noun:
* The restaurant has a friendly staff.
* We had a friendly conversation.
* The city offers friendly public transportation options.
Comparative/Superlative:
* The cat was friendlier than the dog.
* The most friendly person I know is my grandmother.
Phrases:
* He was friendly to everyone he met.
* She had a friendly smile.
* The town was friendly towards newcomers.
Figurative Language:
* The sun shone friendly on our picnic.
* The waves lapped friendly at the shore.
These are just a few examples, and the specific context will determine the best way to use the word "friendly."