1、Unit 2 Improving yourself突破语法大冲关 返首页2 过去完成时的被动语态观察例句 1By nine oclock last night，200 pictures had been sent from the spaceship.2My homework had been finished by 10：00 this morning.3She told me that the factory had been closed down.4I was told that the task had been finished before I got there.返首页3 归纳
2、用法 一、构成形式(1)过去完成时的被动语态的肯定式为：had been done。(2)过去完成时的被动语态的否定式为：had not been done。(3)过去完成时的被动语态的一般疑问式需将 had 提到主语的前面。(4)过去完成时的被动语态的特殊疑问式为：疑问词 hadbeen done。返首页4 二、基本用法过去完成时的被动语态常用于以下情况：(1)表示过去某一时间以前已经完成的动作，常与 by，before 等引导的时间状语连用。The work had been finished by five oclock yesterday afternoon.The classroom
3、 hadnt been cleaned before the teacher came.How many buildings had been destroyed when the hurricane ended?Had the new plan been discussed before the meeting?返首页5(2)用在 told，said，knew，heard，thought 等动词之后的宾语从句中。He said the production costs had been reduced.The boy was reminded that his homework had no
4、t been handed in.The media reported more than 1，000 people had been killed in the earthquake.返首页6 即学即练用所给词的适当形式填空He did what he _(tell)to.The police finally recovered the paintings that _(steal)He asked if Mary _(send)to hospital.had been told had been stolen had been sent 返首页7.单句语法填空1Her keys _(lea
5、ve)in the office so Hellen had to wait until her husband came home.2He woke up to find the work _(do)overnight.3The task _(finish)before 12：00 yesterday.4He said that some factories _(build)in the city.5I didnt know that my watch _(mend)had been left had been done had been finished had been built ha
6、d been mended 返首页8.短文语法填空I still remember last winter，when I woke up in the morning，it 1._(stop)snowing.Looking outside of the window，the snow on our lawn 2._(clean)by my father.I closed the book that 3._(borrow)from local library and went downstairs for breakfast.Then my little brother came to tell
7、 me that all his homework 4._(finish)During the breakfast，one of had stopped had been cleaned had been borrowed had been finished 返首页9 my best 5._(friend)came to visit my family.She went to Australia last year.Before that she 6._(prepare)for the examination of University of Sydney for half a year.Du
8、ring her study，she 7._(learn)the culture and professional knowledge in her field.By the end of last fall a novel about Maori 8._(finish)by her.When she was in Australia，together with her friends and friends had prepared had learned had been finished 返首页10 classmates，she 9._(plan)to donate some money for the poor and the weak in China.So after her return，she went to Garze Tibetan Autonomous Prefecture to help the people in need.In total，100 people 10._(help)by her team by the end of last October.had planned had been helped Thank you for watching!