Unit 8 Have a Good Habit!the Third PeriodI.Teaching Aims:1.Can use the sentence structures to talk about the habits and give some advice.“Don’t read in bed. It’s bad for your eyes. You’d better read at the desk. You shouldn’t have the book so close to your eyes. You should take care of your eyes.”2.Can understand and read the dialogue fluently.3.Let the students have a good reading habit and know how to protect their eyesight .II.Key Points and Difficult Points:1.Sentence structure:It’s bad for your eyes.2.Can use the structures to communicate with others fluently : “Don’t ... ,You’d better ... ,You should…and You s