What are some examples of singular nouns ending in y preceded by a vowel add s?

You're right! Nouns ending in "y" preceded by a vowel do add "s" to form the plural, not "ies".

Here are some examples:

* Boy - boys

* Toy - toys

* Monkey - monkeys

* Valley - valleys

* Attorney - attorneys

* Joey - Joeys

Let me know if you'd like more examples!