题目内容
1．The firm was successfully run and ，he owed his success to the support of his friends．（ ）| A． | looking back | B． | looked back | ||
| C． | to look back | D． | when looked back |
分析 这个公司经营的很成功，回顾过去，他把自己的成功归因于朋友的支持．
解答 答案A．根据句子成分分析可以看出这是and连接的两个并列的句子，在后面的句子里look back 做he owed his success to the support of his friends（他把自己的成功归因于朋友的支持）的时间状语，look和he是主动关系，所以选择A looking back．其他选项与句子结构不符，B表示被动；C表示目的；D表示被动．
点评 考查现在分词做时间状语．在这个结构中分词动作一发生，谓语动作紧跟着发生，这时用现在分词的一般式作时间状语，其逻辑主语为句中的主语．
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