2016考研英语基础时态讲解：过去完成进行时

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考研英语语法包含了16大基础时态，不同的时态对应谓语及动词具有不同的展现形式，需要考生认真的理解和区分。打好语法基础必须要弄清楚时态问题，下面新东方在线为带着大家回顾讲解基础语法时态，大家要认真学习掌握。
    2016考研英语基础时态讲解：过去完成进行时
   
    1.概念：表示某个正在进行的动作或状态，持续到过去某个时刻，还未完成，一直持续到之后的当前才结束。
    2.基本结构：主语+ had + been + doing +其它
    3.例子：
    She had been suffering from a bad cold when she took the
exam.她在考试之前一直患重感冒。
    Had they been expecting the news for some time?他们期待这个消息有一段时间了吧?
    4.特殊含义：
    ①尚未完成：He had been writing the novel.他已经在写小说了。(他没写完)
    ②企图：He had been studying the meaning of this
proverb.他曾经学习过这个谚语。(他曾努力学习过它)
    ③未得结果：We had been studying what our enemy had
said.我们一直致力于敌人所说的。(但是我们没有理解)
    ④最近情况：He had been quarrelling with his wife.他和他的妻子吵了一场架。(最近)
    ⑤反复动作：He had been asking me the same question.他一直问我相同的问题。(屡次)
    ⑥情绪：What had he been doing?他做了什么?(不耐烦)