Teaching goals 教学目标
1. Target language目标语言
a. 重点词汇和短语
obligation, lack of obligation, suggestion, expensive, refund
b. 重点句式
You mustn’t do ... P4
You didn’t need to ... P4
You don’t have to ... P4
You needn’t have done ... P6
2. Ability goals 能力目标
Enable the students to talk about obligation or lack of obligation.
