一、学习目标
1.为了保持健康继续学习好的生活习惯。
2.学习有用的单词和短语: article, cause, cancer, give up, throw around, litter, habit, energy, necessary, enough
3. 学习情态动词: must, must not
二、学习过程
1.掌握单词表上单词：From “article” to “enough”
（1）自读、纠错（2）领读（3）背记（4）造句:
It’s ____ __ for us to brush te eth twice a day.
▲注意运用句型：It’s necessary for sb. to do sth.
他不够上学的年龄。
He is not old ____ ___ to go to school.
我们来得及赶到机场。
We have ______ time/time ______ to get to the airport.
