While on a trip to Mazatlan some years back, Troy and Grandma were leaning over the edge of the tourist cruise boat (and I use that term loosely) peering into the water. Troy was about 10 or 11 years old and was saying things like "Look how blue the water is!" and "I wonder how cold it is?" and "I wonder how deep it is!" Mother, with her brow intently furrowed, replied "What I want to know is, what is a participle!"