Unit 5 Using language 过去完成时（ppt课件）-2022新外研版（2019）《高中英语》选择性必修第一册.pptx

1、When I got to school,I realized that I had left my schoolbag at home.Jack坐下班车吧坐下班车吧 ！Before I got to the bus station,the bus had left.By the time I got back to school,the bell had rung.Observe and say a.Before I got to the bus station,the bus had left.b.By the time I got back to school,the bell had

2、runggot to the bus station the bus had left got back to schoolthe bell had rungPast perfect:had doneGrammar-Past perfect：发现并掌握“过去完成时”的概念、特点及用法。：能够熟练利用习题帮助自己巩固语法知识。：提高在语境中辨析一般过去时和过去完成时的能力，增加学习英语语法的信心。教学重点：引导学生观察例句，发现并总结过去完成时的规则。教学难点：让学生在真实语境中灵活使用过去完成时。Focus on Focus on 基本用法基本用法Past perfect 过去完成时过去完成时

3、 基本结构基本结构 基本基本用法用法 常用固定句型常用固定句型1.过去完成时的构成为：过去完成时的构成为：肯定式肯定式为为_；否定式否定式为为_；被动式被动式为为_。I had finished my homework before I had supper.John and Jane had not known each other for a long time before they got married.The work had been finished by us last Friday.had donehad not donehad been done过去完成时的基本用法过去完

4、成时的基本用法1.表示在过去的某一时间或某一动作之前完成表示在过去的某一时间或某一动作之前完成的动作或存在的状态的动作或存在的状态。(过去的过去过去的过去)Before we got to the train station,the train had already left.我们到达火车站之前，火车就已经离开了。我们到达火车站之前，火车就已经离开了。Before I could say“thank you”,he had run away.我还没来得及说谢谢，他就跑开了。我还没来得及说谢谢，他就跑开了。2.用于宾语从句用于宾语从句。主句中主句中 know,realize,think,sup

5、pose,guess,find,discover,decide,remember,forget等用于等用于一般过去一般过去时，时，如宾语从句中动作先于主句动作，通常如宾语从句中动作先于主句动作，通常过去完成过去完成时。时。We realized that we had lost our way.我们意识到我们迷路了。我们意识到我们迷路了。We didnt think about asking if she had passed her exam.我没想过问她是否考试及格了。我没想过问她是否考试及格了。Helen said that she had moved to another flat.海

6、伦说她已经搬到另一套公寓去了。海伦说她已经搬到另一套公寓去了。3.强调过去动作的完成强调过去动作的完成 by then,by the end of,by the time。By the end of last term,we had learnt 2,000 English words.到上学期期末为止，我们已经学习了到上学期期末为止，我们已经学习了2,000个个 英语单词了。英语单词了。They had lived there for ten years by then.到那时为止，他们已经在那住了到那时为止，他们已经在那住了10年了。年了。1)It/That was+the first/s

7、econd+time+that从句从句，从句谓语常用过去完成时。，从句谓语常用过去完成时。It was the first time that I had visited the Great Wall.这是我第一次参观长城。这是我第一次参观长城。2)It was+一段时间一段时间+since从句从句，从句谓语用，从句谓语用过去完成时。过去完成时。It was three years since he had joined the army.他参军三年了。他参军三年了。4.4.过去完成时用于一些固定句型：过去完成时用于一些固定句型：3)在句型在句型Hardlywhen和和 No soonerth

8、an中，主句常用过去完成时中，主句常用过去完成时,从句用一般过去从句用一般过去时，表示时，表示“一一就就”。Hardly had he got into his big office when the telephone rang.他刚进入他的大办公室他刚进入他的大办公室,电话铃响了。电话铃响了。No sooner had he arrived than he was asked to leave again.他刚到就被要求离开。他刚到就被要求离开。4)在句型在句型If only,Id rather 中，常见过去完中，常见过去完成时，表示成时，表示“要是要是.就好了就好了”；“宁愿宁愿”。If

9、 only we had listened to their advice.我们要是听他的建议就好了。我们要是听他的建议就好了。Id rather you hadnt been present.我宁愿你当时不在场。我宁愿你当时不在场。1.He _(learn)3000 words before he went to England.2.The old man told us that he_(travel)to many places.3.It was the third time that he _(see)such a large animal.4.By the time he got t

10、o the airport,the plane _(take off)5.Mary did her homework and_(wash)the dishes.had learnedhad travelledhad seenhad taken offwashed过去的过去过去的过去宾语从句宾语从句It was the first time that过去动作的完成过去动作的完成过去完成时和一般过去时的区别过去完成时和一般过去时的区别1.意义不同意义不同When I arrived,she left.When I arrived,she had left.(I arrived and then s

11、he left)(She left before I arrived.)2.起点不同起点不同He studied there two years ago.He said he had studied there three years ago.(离现在两年)(离说话时两年)3.注意注意表示过去时态并列的两个或以上的动词，一般用and，then,but 先后顺序连接，一般用一般过去时。He said he went to the shop and bought some food.Summary1.过去完成时过去完成时主要用来表示在过去之前发生的主要用来表示在过去之前发生的事或做的动作，即事或做

12、的动作，即过去的过去过去的过去，通常与一般，通常与一般过去时连用。过去时连用。2.结构结构:肯定：肯定：否定：否定：肯定被动：肯定被动：3.用于过去完成时的基本用法用于过去完成时的基本用法:had done had not donehad been done(1).过去的过去过去的过去。(2).用于宾语从句用于宾语从句。(3).强调过去动作的完成。强调过去动作的完成。(4).固定句式固定句式（1）By the end of last year,he _ (collect)more than 10 foreign stamps.（2）He said that great changes （tak

13、e）place in his hometown since 1990.（3）This was the second time that the musician _（tour）Europe.（4）He (work)as a lecturer two years ago,but now he is a manager.（5）When the police found him,the criminal _(be)in the cave for nearly a month.（6）He (hope)to catch the 8:00 bus,but he found it gone.had collectedhad taken had touredworkedhad been had hoped 1.完成大本练习册完成大本练习册P61.2.复习必修一复习必修一Unit 1 单词及词性转换单词及词性转换H