,孙老师，您好，还有个问题请教您一下！As teachers we should concern ourselves with what is said,not what we think ought to be said.这句话想了半天也不知道怎么翻译好，亲您给翻译一下吧！还有在状语从句这课里，在时间状语从句里又这样两个例句1.Did you work as a stewardess before you came to this company?我觉得主语应该用过去完成时态吧，主句的动作发生在从句动作之前，从句已经是一般过去时了，主句应该用过去完成时才对吧?2.The plane took off after the air traffic controller gave clearanace.我觉得这句话的从句也应该使用过去完成时吧？

,As teachers we should concern ourselves with what is said,not what we think ought to be said.这话不是一句地道的英话，很别扭。看不懂就算了。1--2 可以使用过去完成时，区别在于过去完成时更强调动作的先后关系，课内对这一问题有专们讲解。