1£®To get the students to learn to use the following important new words and phrases freely£ºabuse£¬quit£¬effect£¬disappointed£¬stress£¬ban£¬desperate£¬ashamed£¬due to£¬feel like£¬in spite of£¬take risks(a risk)£¬get into£¬addicted to£¬accustomed to.

2£®To get the students to understand and use the following important and useful sentence patterns£º

(1)I didn't know£¬for example£¬that it could do terrible damage to your heart and lungs or that it was more difficult for smoking couples to become pregnant.