An Unforgetable Lesson
一月 11, 2008 
In the English class last week, Sam was sleeping in front of the teacher Frank. At the moment, Sam dreamed that he was a teacher teaching in the class. In coincidence, a student was sleeping in front of him, too. Sam was out of rage. Then, he took a dictionary, hit the student and yelled: “Hey! Wake up, Tim! Stay awake in the class!”
But in the next second, Sam found that his head was hit by a heavy book. “Wake up, Sam! Stay awake in the class!” The teacher said the same words as he said in the dream. He felt embarrassed, and he owed the teacher an apology.
After that, he realized that it is not easy to be a teacher. He swore an oath in his mind : I will never sleep in the class.
You did a fine job but there are a couple mistakes such as ” in a coincidence, “Stay awake in the class.” Besides, the expression “next moment”, “next second” are overused.