let's have a break 我們休息一下吧
    a: let's have a break, ok? i'm too tired to go on.
    b: ok! we have talked about the business since 9 o'clock. i think we're all sort of tired. let's have a break.
    a: well, what's your first impression of the city? you come here for the first time.
    b: i like it. it's very beautiful. and i've heard a lot of that "up above there is heaven; down below there're suzhou and hangzhou."
    c: we've been eager to visit the ancient city.
    a: wish you have a good time!
    b: thanks.
    a: now, let's go out and have some drinks.
    c: ok! it's on me.
    重點講解：
    “too tired to”意思是“太累了以至于不能...... ”"too ... to..." 是一個固定短語，它的意思是“太......而不能......”，中間用形容詞，如：i'm too busy to watch tv. 我太忙了而不能看電視。
    “it's on me.”的意思是“我請客”，口語中經(jīng)常用到。同義說法還有“this is my treat.”
    a: 我們休息一下吧，好嗎?我太累了，無法再繼續(xù)下去了。
    b: 好的。我們從九點就開始談這筆生意了。我認為我們都有點累了。我們休息一會兒吧。