be supposed to... ……应当做某事

　　be supposed to+动词表示“应当……”，“将……当成理所当然的事情”。会话中经常会用到的表达。下面整理了 be+过去分词... 的形态。

　　例句：

　　Am I supposed to meet the client today?

　　我今天要见顾客吗？

　　I am not supposed to be here.

　　我不应该在这里。

　　When is he scheduled to arrive at the airport?

　　他预计什么时候到机场？

　　I'm not interested in playing golf.

　　我对打高尔夫球不感兴趣。

　　对话：

　　A: When is the show supposed to start?

　　表演什么时候开始？

　　B: Just after seven o'clock.

　　7点准时开始。