一定是

• You must be muddling me up with my twin brother .
  你一定是把我看成我的孪生兄弟了。
• Surely he must have fainted; maybe he was dead .
  一定是他晕倒了吧；也许他已经死了。
• I think he must be somebody .
  我想他一定是个大人物。
• He must have got mixed up in something in chicago .
  他一定是在芝加哥卷进了什么事情。
• He must have been shipwrecked .
  他一定是沉船遇难了。
• You must be out of your head .
  你一定是神经错乱了。
• Her father thought that she must have met a fairy .
  她父亲认为她一定是遇到了一位仙女。
• It must be this miserable trader-this intruder .
  一定是那个晦气的商人--那个外来的家伙。
• The curves must therefore slope downwards to the right .
  因此这些曲线一定是向右下倾斜。
• His mouth must also have been disfigured in the accident .
  他的嘴一定是在事故中破相了。