预备课程Unit 3课时1 Welcome to the unit Listening Speaking
一、课前预习导学
（1）学习目标:
1.掌握词汇we, classmate, twelve, too, polite, helpful ,big, strong, small等
2.掌握句型Are we/you classmates? Yes , we are .
How old are you ? I’m twelve , too .
Are they happy? No , they aren’t . They are sad .
