谁能透彻的讲解一下:过去进行时和过去完成时?

谁能透彻的讲解一下:过去进行时和过去完成时?
要有结构、概念、用法、例句(先中文)、例句讲解（最好时态的每一个用法都给一个例句）
请再加一些习题！

过去完成时 1） 概念：表示过去的过去.其构成是had +过去分词构成.
2） 用法 a.在told,said,knew,heard,thought等动词后的宾语从句.例如：She said （that）she had never been to Paris.她告诉我她曾去过巴黎.b.状语从句 在过去不同时间发生的两个动作中,发生在先,用过去完成时；发生在后,用一般过去时.例如：When the police arrived,the thieves had run away.警察到达时,小偷们早就跑了.c.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.那时我们希望你能来,但是你没有来.3） 过去完成时的时间状语before,by,until ,when,after,once,as soon as.例如：He said that he had learned some English before.他说过他以前学过一些英语.By the time he was twelve,Edison had began to make a living by himself.到了十二岁那年,爱迪生开始自己谋生.Tom was disappointed that most of the guests had left when he arrived at the party.汤姆失望了,因为他到达晚会时,大部分客人已经走了.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表示的是时间的一点,表示在同学们正忙于……这一背景下,when所引导的动作发生.因此前一句应用过去进行时.注意：had hardly… when 还没等…… 就…….例如：I had hardly opened the door when I he hit me.我刚打开门,他就打了我.had no sooner…than 刚…… 就…….例如：He had no sooner bought the car than he sold it.他刚买了这辆车,转眼又卖了.
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；一个长动作延续的时候,另一个短动作发生.3） 常用的时间状语有this morning,the whole morning,all day yesterday,from nine to ten last evening,when,while等.例如：My brother fell while he was riding his bicycle and hurt himself.我兄弟骑车时摔了下来,受了伤.It was raining when they left the station.他们离开车站时,正下着雨.When I got to the top of the mountain,the sun was shining.我到达山顶时,阳光灿烂.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.A.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