讲解文本：
今日句型：
I’m supposed to do：
我应该
今日例句：
I’m supposed to go on a diet.
我应该节食。
go on a diet 节食
I’m supposed to get a raise.
我应该涨工资。
raise 上升
I’m supposed to be home before 10 PM.
我应该在十点前回家。
You're not supposed to smoke in here.
你不可以在这儿抽烟。
I'm not supposed to be here.
我不应该出现在这里的！
疯狂练习吧！