* The sun's rays warmed my face as I walked along the beach. (Simple sentence)
* A ray of hope shone through the darkness, reminding me that things would get better. (Figurative language)
* The scientist used a laser ray to cut through the metal. (Technical)
* She had a mischievous glint in her eye, like a ray of sunshine breaking through the clouds. (Descriptive)
* The ray gun in the movie shot beams of energy that could destroy anything. (Sci-fi)
You can make many more sentences with "ray" depending on the context you're using it in.