RG9u12
You’re supposed to shake hands
Grammar
1.用be supposed to 表示应该，被期望。
We are supposed to learn English well.
2.You should have done---表示本应该做某事，而实际上该做而未做，暗示责备，抱怨或遗憾。
I was supposed to arrive at 7:oo.
You should have asked what you were supposed to wear.
Function
Tell what you are supposed to do.
---What are people in Korea supposed to do when they meet for the first time ?
---They are supposed to bow.
Discuss customs of different countries,etiquettes of meeting for the first time, tables manners.
---How was the dinner at Paul’s house last night ?
---Well, it was OK,but I made some mistakes. I was supposed to arrive at 7:00. but I arrived at 6:00.
---It’s impolite to make noise while eating.