Unit3 Learning about language (ppt课件)-2022新人教版(2019)《高中英语》选择性必修第二册.pptx
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1、人教版(2019)Unit 3 FOOD AND CULTUREDiscovering Useful Structures英语 选择性必修二Warming up01Discovering the rules02Studying the rules03Applying the rules04They had led a peaceful life before they moved to the seaside.他们搬到海边前,一直过着平静的生活。Warming upWarming up01By the time the father returned home from abroad,Tom
2、had grown up.到父亲从国外回来的时候,Tom 已经长大了。Warming upWarming up01表示“在过去某一时刻或动作之前已经完成了的动作或状态”,”,即“过去的过去.By the time the policeman arrived,the thief had run away.Warming upWarming up01到上个星期为止,我们已经学习了7个单元了。By last week,we had learnt seven units.Warming upWarming up01the Past perfect tense 过去完成时 定义 基本结构 基本用法 常用
3、固定句型Warming upWarming up01Read the sentences and find out the tenses.1.The chef had set up a farm-to-table restaurant before his new cookbook was published.A new farm-to-table restaurant had been set up by the chef before his new cookbook was published.2.They had finished their dinner by the time Sa
4、m joined them.Their dinner had been finished by the time Sam joined them.Find out the order of these predicate?Discovering the rulesDiscovering the rules02Find more sentences using the past perfect tense or the past perfect passive voice in the passage.1.my only experience with Chinese cooking was i
5、n America,with Chinese food that had been changed to suit American tastes.2.When my family and I had just arrived in China,we went looking for a good place to eat in Beijing.3.A Sichuan restaurant had been recommended to us by a friend,and finally,we found it.4.the chef just began filling our table
6、with the best food we had ever eaten.Discovering the rulesDiscovering the rules02时态结构 用法标志词一般过去时态主动 S+did/was/were动作发生在过去的某个时间过去的时间点如,yesterday,last night,ago,this morning,just now,the other day被动 S+was/were done过去完成时主动 S+had done动作发生在过去的某个时间/动作之前by,before,by the time,by the end of,it was the first
7、time that.被动 S+had been doneSummaryDiscovering the rulesDiscovering the rules02主动语态被动语态肯定形式had done had been done否定形式had not donehad not been done一般疑问句had主语donehad主语been done特殊疑问句疑问词had主语done疑问词had主语been doneRule1表示在过去某一时间或动作之前已经发生或完成的动作。它表示这个动作发生的时间是“过去的过去”,这一过去时间可用by,before等构成的短语及when,before,after
8、,by the time等引导的状语从句表示。Studying the rulesStudying the rules031.The classroom _ (clean)before the teacher came.2.The researchers said at least 4%of the population in those countries _(infect).3.We _(build)five new buildings by the end of last year.4.I _(finish)my homework before I had supper.5.He tol
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