Once upon a time, there was a little boy named Tim. Tim loved to play by the river. One day, he found a small boat with a sail. He thought it would be fun to let the boat sail on the river.
Tim put the boat in the water and said, "Go, boat, go!" The boat started to sail. The wind blew its sail and it moved fast. Tim ran along the river, watching the boat with a big smile.
Tim met his friend, Sue, by the river. Sue saw the boat and said, "Wow, Tim! Your boat is fast!" Tim replied, "Yes, it is! I let it sail and the wind makes it go!" They watched the boat together as it sailed with the wind, feeling happy and free.
