key sentences（重點句子）
    171．i'm going to tianjln early tomorrow morning．
    我明天一大早要去天津。
    172．so i would like to request an early morning call．
    因此我想讓你們明天早上叫醒我。
    173．at what time would you like us to call you tomorrow morning？
    您想讓我們明天早上什么時候叫醒您？
    174．but i have to be at the conference room of the garden hotel in tianjin by 10 o'clock．
    但我是10點鐘必須趕到天津花園賓館會議室。
    175．that means that i'll have to be on the road by 7 o'clock at the latest．
    就是說我明天早晨最遲也要7點鐘上路。
    176．in that case，i would like you to call me at 5∶45？
    那樣的話，你們明早5點45分叫醒我好嗎？
    177．ok．so we will wake you up at 5∶45 tomorrow morning．
    好，那么我們明早5點45分叫醒您。