let me know ，让我知道;告诉我;通知我;例句，It was very considerate of you to let me know the meeting would be delayed.你让我知道会议要延期，真是考虑得周到。

inform，vt.知会;通知;通告;了解;熟悉;对…有影响;例句，In case the questions are of general interest, I will inform all of you by E-mail.假如问题是大家都有兴趣的话，我会以E-mail的形式知会你们。