Các cấu trúc tương đương với "S + be + supposed to + V":+It's someone's duty to V: Đó là nhiệm vụ của ai đó để làm gì
+Someone is supposed to V: Ai đó được cho là phải làm gì
+Someone is expected to V: Ai đó được mong đợi phải làm gì
+Someone has to V: Ai đó phải làm gì
+Someone is obliged to V: Ai đó có nghĩa vụ phải làm gì
> Mấy cấu trúc trên nghĩa như nhau, sau này gặp bạn chuyển đổi qua lại theo công thức nha!

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1, It was Jane's duty to work last night.

2, The children are supposed to put away their toys before they go to bed.
3, It was my duty to go to the meeting.
4, Nuclear energy is supposed to have caused lots of problems.
5 It's my duty to pick Ann up right now.
6 You are supposed to clean all the windows.
7, The train was supposed to arrive at 11:30.
8, It was my duty to call Mr. Brown.
9, It's Ms. Carol's duty to complete all the reports after her recovery.
10, HR Department is supposed to inform all information about the summer trip of the year.