Question

Who can help me?

请简单介绍一下过去完成时和过去进行时
我见过去完成时经常用have,这个have究竟怎样用?

Answer 1

The Past Perfect Tense 过去完成时态（一） 构成：过去完成时由"助动词had（通用于各种人称和数）+过去分词构成。 用法：过去完成时表示在过去某一时间或动作之前已经发生或完成了的动作。它表示动作发生的时间?quot;过去的过去"。与by、before等构成的短语连用。 Statements 陈述句 They had already had breakfast before they arrived at the hotel. 在他们到达旅馆之前，他们已经吃早饭了。 从句中"arrived at"到达在"过去"的时间，而"had already had"吃早饭的动作发生在到达之前，因此主句的时态为"过去的过去"。 I had finished writing my composition by 10:00 this morning. 今天上午10：00点以前，我已经写完了我的作文。 She had searched the internet for two hours when she found an ad for the Canon digital camera. 当她找到了佳能数码照相机的广告时，她已经在因特网上查询了两个小时。 I went over what I had written again and again so that I wouldn't make any mistakes. 我一遍又一遍地检查了我所写的内容，以至我没有出现任何错误。 Negative 否定句 He remembered he hadn't paid for it yet. 他记得�挥懈犊睢?br> He said that he had never seen such a beautiful bird before. 他说他以前从来没有看过这样美丽的鸟。 Questions 疑问句 How many English flushed had you seen by the end of last term? 到上学期期末为止，你们看了多少部英文片？ Had you reached the station before ten o'clock? 到十点以前，你们已经到达火车站了吗？ 过去完成时的构成 过去完成时由"助动词had (通用于各种人称和数)＋过去分词"构成。主要表 示过去某时前已发生的动作或情况（也可说是"过去的过去"）： By the time I got there, it had already finished. When I got to the check-out, I realized I had left my purse at home. He said he had never seen such an exciting match before. 注：如果时间状语从句的动作发生在前，则从句用过去完成时，主句用一般 过去时。 When he had finished his work , he left his office . After I had done my homework , I went to bed

过去进行时

1） 概念：表示过去某时正在进行的状态或动作。

2） 过去进行时的主要用法是描述一件事发生的背景；一个长动作发生的时候，另一个短动作发生。

3) 常用的时间状语
this morning, the whole morning, all day yesterday, from nine to ten last evening, when, while

My brother fell while he was riding his bicycle and hurt himself.
It was raining when they left the station.
When I got to the top of the mountain, the sun was shining.

典型例题
1) Mary ___ a dress when she cut her finger.
A. made B. is making C. was making D. makes
答案C. 割伤手指是已发生的事情，应用过去时。同 时，when表时间的同时性，"玛丽在做衣服时"提供事情发生的背景，因此用过去进行时。

2) As she ___ the newspaper, Granny ___ asleep.
read； was falling B. was reading； fell C. was reading； was falling D. read；fell
答案B.句中的as = when, while，意为"当……之时"。描述一件事发生的背景时，用过去进行；一个长动作发生的时候，另一个短动作发生。句意为 "在她看报纸时，奶奶睡着了。"句中的 fell (fall的过去时)，是系动词，后跟形容词，如：fall sick。

Answer 2

强调过去两种动作发生的顺序使用过去完成时，表示过去某一时刻正在做动作使用进行时

Answer 3

过去完成时，到过去那个时间为止，已经完成的动作，就是：过于的过去。

过去进行时：过去某个时间正在发生的动作。

Answer 4

通俗点讲 过去完成时时说在过去那件事已经做完了。
过去进行时是说那件事做过去你说的那个时段正在进行。