Unit 12 Section A (Grammar Focus-4c)课件 英语人教版（新目标）九年级上册

1、Section A (-Grammar Focus4c)Unit 12 Life is full of the unexpected.1)当我到达学校的时候，我才意识到我把书包忘在家里了。 _ I got to school, I realized that I _ _ my backpack at home. 2)到我返回学校的时候，铃声已经响过了。 _ _ _ I got back to school, the bell _ _.WhenhadleftBy the time had rung根据汉语提示完成句子。Grammar Focus3)我到达公共汽车站之前， 汽车已经离开了。 Bef

2、ore I _ _ the bus stop, the bus _ _ _.4)我决定先买一杯咖啡，然后再去办公室。 I _ _ _ go up to my office when I decided to get a coffee first.5)就在我和别的工作人员一起排队等候的时候，听到了一个巨大的声响。 As I _ _ _ _ with other officeworkers, I_ _ _ _.got to hadalready left was about toGrammar Focuswas waiting in line heard a loud sound过去完成时的用法概

3、念：过去完成时表示某一动作或状态在过去某一时间或动作之前已经发生或完成，也可以指过去的动作延续到过去的某一时刻，它表示发生的时间是“过去的过去”。过去的过去过去某时现在将来过去完成时Grammar1. 过去完成时的构成：_+_2. 过去完成时表示： _3. 过去完成时常与_等引导的时间状语连用。had过去分词when, before, by the time 过去某一时刻或动作之前已经发生或完成的动作。Grammar关于过去完成时的几个考点：1.过去完成时的句型转换。变否定句时，在had后加not，一般疑问句把had提到句首。2.过去完成时的判断依据。过去完成时是一个相对的时态。只有和过去的某

4、个时间或动作相比较时才会用到。常见的时间状语(从句)由by，before，when，by the end of，by the time，until等引导。Grammar过去完成时还可表示过去某一时刻之前发生的动作或状态持续到过去某个时间，常与“for时间段”或“since时间点”连用。e.g. When Jack arrived，Mary had been away for almost an hour.当杰克到时，玛丽已经离开差不多一个小时了。Grammar过去完成时经常用于主句为一般过去时的宾语从句中，表示从句动作先于主句动作发生，像在told，said，knew，heard，though

5、t等动词后的宾语从句中。 在表示过去概念的句子中，常出现与完成时态连用的词，如：already，yet，since，for，ever，never及表次数的词，此时句子常用过去完成时。e.g. I met Jim in the street yesterday. We hadnt seen each other since he went to Beijing.我昨天在街上碰见了吉姆。自从他去北京后，我们彼此没有见过面。Grammar过去完成时及句型转换口诀：过去的过去之动作，用过去完成时来掌舵。构成“had过去分词”结构，切记had是助动词。没错，had 后加not 即否定，had提句首有把握

6、，过去分词稳住不用变，上述内容记清好处多。Grammar1Tim went into the bathroom.Mary got up. By the time Mary got up,Tim had already gone into the bathroom. 2The coffee became cold.I put cream in the coffee._3The teacher collected the math homework.I got to school._4I completed the work for my boss.The workday ended._4a Ma

7、ke sentences using by the time or before.By the time I put cream in the coffee，it had become cold.Before I got to school，the teacher had collected the math homework.Before the workday ended，I had completed the work for my boss.5The movie started.I arrived at the cinema._6My mother finished making th

8、e apple pie.I got home from my language course._By the time I arrived at the cinema，the movie had started.By the time I got home from my language course，my mother had finished making the apple pie.4a Make sentences using by the time or before.4b Fill in the blanks with the correct forms of the words

9、 in the box.1By the time I arrived at the party，everyone else _ already _.2When he put the noodles into a bowl，he realized he _ to add the green beans.rush outforgetarrive at go intoshow up find outhadshowed uphad forgottenshow up出现；露面e.g. She did not show up at the party.这次聚会她没露面。show的常用词组：show off

10、 炫耀show ones face露面show up(使)看得见，变得明显3By the time my mother came back from the market，I_ already_ of the door to go to my piano lesson.4Before she got to the airport，she_about the earthquake.5When she_ the movie theater，she remembered she had forgotten to feed her dog.6Before she got a chance to say

11、 goodbye，he _ the building.hadrushed outhad found outarrived athad gotten intorush outforgetarrive at go intoshow up find out4c Write two true statements and one false statement about your day yesterday. Then ask your classmates to guess the false statement.1By the time I left for school in the morn

12、ing, _ _2By the end of the school day，_ _3By dinner time，I_ I realized that I had left my keys at home. I had already finished my homework.had made the egg soup. 一、根据首字母或汉语提示填写单词1You can buy some things in the m_2The moon was a_ the trees in the east.3People do not know the value of health t_ they l

13、ose it.4The sun rises in the east and sets in the w_5If you travel by air，you must arrive at the a_ very early.arketboveillestirportExercises二、用括号中所给单词的适当形式填空1My family _already_(paint)the walls before we _(move)into the new house last year.2Nick _(turn)off the lights by the time he _(leave)the clas

14、sroom.hadpaintedmovedhad turnedleft Exercises3All the tickets _been _(sell)out before the movie _(begin). 4By the end of last month, we _ (finish)the work.5_(luck), the famous temple was not damaged in the earthquake.had finishedLuckilyhadsoldbegan Exercises三、根据汉语意思，补全句子1这瓶子里装满了水。 The bottle _ _ _ water.2他即将去海南度假。 He _ _ _go to Hainan