Question

13．那个女孩离开家多长时间了？
How long has the girl been away from her home？．

Answer 1

分析 How long has the girl been away from her home？

解答 答案：How long has the girl been away from her home？这里是说女孩已经离开，持续了一段时间了，用现在完成时have/has+过去分词，这里是特殊疑问句，疑问词是how long多久，后加一般疑问句语序，主语是the girl，故How long has the girl，这里的离开leave是短暂性动词，需换成表状态的持续性动词结构be away from，be的过去分词been，加上宾语her home，故答案是How long has the girl been away from her home？

点评 本题是现在完成时的特殊疑问句，一定要注意这里不能用短暂性动词，常见的用be+形容词或副词替换短暂性动词的有
  die→be dead       leave→be away（from）   finish/end→be over    begin/start→be on   open→be open        close→be closed        come here→be here    come back→be back marry→be married     fall asleep/get to sleep→be asleep return→be back