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    精英家教网 > 高中英语 > 题目详情

    If _______, these injuries can develop into more serious problems.


    1. A.
      left untreating
    2. B.
      left untreated
    3. C.
      leaving untreated
    4. D.
      are left untreated
    B
    试题分析：考查省略句，当主从句的主语一致的时候，可以省略从句的主语和be动词，这句话省略的就是后面的主语these injuries和are，完整的说是If these injuries are left untreated, these injuries can develop into more serious problems.这里的leave...+adj/adv/prep 表示使。。。处于某种状态。译为：如果被这些伤口不处理可能会发展成更严重的问题。
    考点：考查从句的省略式
    点评：做这种题目可以用还原法做题，先把主语和be动词加上，再判断是主动还是被动。句意通顺才行。
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