This is secret and I’m not supposed to talk about it.
这是秘密,我不应该谈论。
She is late for class again and she is supposed to say sorry to the teacher.
她又迟到了, 她应该向老师说对不起。 At the end of the play all the actors came onto the stage and bowed.
终场时,全体演员都走到台前鞠躬致谢。
He bowed his thanks.
他鞠躬致谢。