过去完成时。 The said the production costs had been reduced. The boy was reminded that his homework had not been handed in. The media reported more than 1,000 people had been killed in the earthquake. (3)根据语意可以判断出动作先后的被动语态，用过去完成时由“had + 过去分词”构成，表示在过去某一时刻或某一动作之前发生的动作或状态，句中常用by，before，until，when等词过去完成时。 As the assignment had been done, he went on to search the Internet. He did what he had been told to 另：当从句由 after，before，when或 as soon as引导时，主句和从句都可以用一般过去时。 When he arrived, he called her. They locked the door before they left.

过去完成时表示“过去的过去”发生的动作或存在的状态，因此其对比点是过去的动作或状态（大部分情况下以一般过去时过去完成时表示一个本来打算做而未做，曾经设想而未实现的事。” 例如：They had wanted to help but could not get here in time. (他们本想来帮忙，但未及时赶到。) I had thought that he had died at least twenty years ago. (我原以为他至少死了十年。) I had

过去完成时(The Past Perfect Tense)：表示过去某一时间或动作以前已经发生或完过去完成时(The Past Perfect Tense)：表示过去某一时间或动作以前已经发生或完成了的动作，对过去的某一点造成的某种影响或是结果，用来指在另一个过去行动之前就已经完成了的事件。它表示动作发生的时间是“过去的过去”，侧重事情的结果。。 下面是小编为大家精心整理的英语中过去完成时的结构，一起来看一下吧！ 主语+had+动词过去分词 ①肯定句：主语+had+动词过去分词+其他. ②否定句：主语+had+not+动词过去分词+其他. ③疑问句：Had+主语+动词过去分词+其他? 肯定回答：Yes,主语+had. 否定回答：No,主语+hadn't. ④特殊疑问句：特殊疑问词或词

过去完成时(The Past Perfect Tense）：过去完成时表示过去某一时间之前完成

过去完成时

过去完成时。 　　如：As the assignment had been done, he went on to search the Internet. 　　He did what he had been told to. 　　另：当从句由after，before，when或assoonas引导时，主句和从句都可以用一般过去时。 　　如：When he arrived, he called her. 　　They locked the door before they left. 　　过去完成时与现在完成时被动语态用法区别： 　　现在完成时被动语态表示相对于现在来说已被完成的动作，过去完成时被动语态表示相对于过去某一时刻来说已被完成的动作。 　　例如：This polluted river has been cleaned. 这条被污染了的河流已被净化。 　　析：该句表示到现在为止这条河流已被净化。 　　例如：He said this book had been translated into Japanese. 他说这过去完成时的被动语态的概念： 　　过去完成时的被动语态是过去完成时态和被动语态的叠合。表示过去本书已被译成日语。 　　析：该句表示到他说话时所体现的时间为止这本书已被译成日语。

过去完成时；发生在后，用一般过去时。例如： When the police arrived, the thieves had run away. 3. 表示意向的动词，如hope, wish, expect, think, intend, mean, suppose等，用过去完成时表示“原本……，未能……”。例如： We had hoped that you would come, but you didn't.   典型例题： The students ________ busily when Miss Brown went to get a book she ____ in the office. A. had written, left B. were writing, has left C. had written, had left D. were writing, had left 答案D。 “把书忘在办公室”发生在“去取书”这一过去的动作之前，因此“忘了书”这一动作发生在过去的过去，用过去完成时。句中when代表时间的一点，表示在“同学们正忙于……”这一背景下， when所引导的动作正在发生。因此前一句应用过去进过去完成时表示表示过去的过去。这个是大家在中学时期就知道的，今天，小编为同学们带来了相当丰富的与英语过去完成时行时。   怎么样，看完了小编给大家准备的语法知识，有没有感觉收获颇多呢？喜欢就收藏起来吧~

过去完成时 用于描述过去某个时间点之前已经发生了的事情。也就是“过去的过去”。 基本形式为主语+had+过去分词。 一般过去时先看例句对比： （1） I did not have any money. 我没钱。 I did not have any money because I had lost my wallet. 因为我丢了钱包，所以没钱。（先丢了钱包） （2） We were not able to get a hotel room. 我们不能进到旅店房间里去。 We were not able to get a hotel room because we had not booked in advance. 我们不能进到旅店房间里去，因为我们事先没预定房间。（没预定房间这件事在前） （3） Alex finished his studies. 亚历克斯结束了他的学业。 By the time Alex finished his studies, he had been in London for over eight years. 亚历克斯结束他的学业的时候，他已经在伦敦待了超过8年了。（先来到了伦敦） 怎么样，是不是看出些什么了？过去完成时是不能独立存在

过去完成时和过去完成进行时

过去完成时既可表示过去某个时间或动作之前所发生的事情，也可表示过去