If _______ to look after luggage for someone else, inform the police at once


  1. A.
    asked
  2. B.
    to ask
  3. C.
    asking
  4. D.
    having asked
A
試題分析:考查非謂語(yǔ)動(dòng)詞。由結(jié)構(gòu)分析可知前面部分是分詞做狀語(yǔ),ask和句子主語(yǔ)之間是被動(dòng)關(guān)系,所以用過(guò)去分詞,此處也可以看做是狀語(yǔ)從句if you are asked to look after luggage的省略。句意:如果有人讓你照看行李,要立刻通知警察。
考點(diǎn):考查非謂語(yǔ)動(dòng)詞。
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