新概念第二册72课(25张)课件.ppt

1、Lesson 72A car called Bluebirdrace v.竞赛，急速而过The car just raced by,leaving a trail of dust.n.比赛，竞赛，种族The motorbike race is held in our city every year.They have been facing the problem of race relations.Vocabularyaverage adj.平均的,中等的She is an average student.The average rainfall in 2003 was not much.a

2、verage n.平均数Add 20,10 and 30 and find the average.above/below the averageHis performance on the test was below the average.on average 平均地讲On average,we receive ten presents each day.burst vi.爆炸，爆裂A tyre burst on the road.vt.&vi.突然打开We burst the door open.While I was reading,the door burst open and J

3、ohn came in.burst into tears/laughter=burst out doing sthHe burst into tears for no reason.He burst out crying for no reason.Language points1、The great racing driver,Sir Malcolm Campbell,was the first man to drive at over 300 miles per hour.在序数词和最高级后常用不定式来做后置定语，这些词语后面可以接名词或one(s)，也可以不接：Shes always t

4、he first to arrive and the last to leave.Youre the best person to advise me about buying a house.你是我买房子的最好顾问。the only后必须接一个名词或one(s)：Youre the only person/one to complain.per表示“每一，每”，通常用于商业及技术用语，日常用语大多用a/an：You must have been driving at seventy miles an/per hour.2、It was over 30 feet in length and h

5、ad a 2,500-horsepower engine.Sth is+数字+单位+inlength/height/weight/depth他有2米高He is 2 meters in height(2meters tall).这个洞有7米深The cave is 7 meters in depth(7 meters deep).这个大象有3吨重The elephant is 3 tons in weight(3 tons heavy).3、Although Campbell reached a speed of over 304 miles per hour,he had great dif

6、ficulty in controlling the car because a tyre burst during the first run.have difficulty/trouble/problems(in)doing sth.做有困难He has grown a beard and I have difficulty(in)recognizing him.the first run 一开始的行程the next run 下一段赛程 4.After his attempt,Campbell was disappointed to learn that his average spee

7、d had been 299 miles per hour.be disappointed to do 失望地做5、Following in his fathers footsteps many years later,Sir Malcolms son,Donald,also set up a world record.follow in ones footsteps 步某人的后尘，仿效某人，继承某人的事业 他打算踏着父亲的足迹，成为一名牙医。He intends to follow in his fathers footsteps and to become a dentist.一、一般现在

8、时 1.概念：经常、反复发生的动作及现在的状况。2.时间状语：Always,usually,often,sometimes,every week(day,year,month),once a week(day,year,month),on Sundays,It often snows here.He is always ready to help others.He is a teacher now.二、一般过去时 1.概念：过去某个时间里发生的动作或状态；过去习惯性、经常性的动作、行为。2.时间状语：ago,yesterday,the day before yesterday,last we

9、ek,last(year,night,month),in 1989,just now,at the age of 5,one day,long long ago,once upon a time,etc.3.She often came to help us in those days.I didnt know you were so busy.三、现在进行时 1.概念：表示现阶段或说话时正在进行的动作及行为。2.时间状语：Now,at this time/moment等 3.结构：am/is/are+doing How are you feeling now?Im teaching in W

10、enshui Middle School.四、过去进行时 1.概念：表示过去某段时间或某一时刻正在发生或进行的行为或动作。2.时间状语：at this time yesterday,at that time或以when引导的谓语动词是一般过去时的时间状语等。3.结构：was/were+doing At that time she was working in a school.When he came in,I was reading a newspaper.五、现在完成时 1.概念：过去发生的动作对现在造成的影响或结果，或从过去已经开始，持续到现在的动作或状态。2.时间状语：yet,alre

11、ady,just,never,ever,so far,up to now,since+时间点，for+时间段，recently,lately,in the past few years,etc.3.基本结构：主语+have/has+p.p（过去分词）+其他 Ive written an article.The countryside has changed a lot in the past few years.六、过去完成时 1.概念：以过去某个时间为标准，在此以前发生的动作或行为，即“过去的过去”。2.时间状语：Before,by the end of last year(term,mon

12、th),etc.3.基本结构：主语+had+p.p（过去分词)As soon as we got to the station,the train had left.By the end of last month.We had reviewed four books.七、一般将来时 1.概念：表示将要发生的动作或存在的状态及打算、计划或准备做某事。2.时间状语：Tomorrow,next day(week,month,year),soon,in a few minutes,the day after tomorrow,etc.3.基本结构：am/is/are+going to do；will

13、/shall+do We are going to have a meeting tomorrow.Im tired.I think Ill go to bed.八、过去将来时 1.概念：立足于过去某一时刻，从过去看将来，常用于宾语从句中。2.时间状语：The next day(morning,year),the following month(week),etc.3.基本结构：was/were+going to do would/should+do He said he would go to Beijing the next day.I asked who was going there.

14、九、将来完成时 1.概念：在将来某一时刻之前已经完成的动作。2.时间状语：by the time of;by the end of+时间短语（将来）;by the time+从句（将来）3.基本结构：will/shall+have+p.p By the time you get back,great changes will have taken place in this area.十、现在完成进行时 1.概念：表示从过去某一时间开始一直延续到现在的动作，并可能延续到将来。2.基本结构：have/has been doing 3.时间状语：since+时间点，for+时间段等。I have

15、been sitting here for an hour.The children have been watching TV since six oclock.十一、一般过去时与现在完成时的转换 在现在完成时中，延续性动词能与表示一段时间的状语连用，瞬间动词却不能。但是，可用别的表达方式：瞬间动词用于“一段时间+ago”的一般过去时的句型中；瞬间动词可改成与之相对应的延续性动词及短语，与一段时间连用；瞬间动词用于“It is+一段时间+since+一般过去时”的句型中，表示“自从以来有时间”的意思，主句一般用it is来代替It has been;A.He joined the League two years ago.B.He has been in the League for two years.C.It is two years since he joined the League.十二、现在进行时与一般将来时的转换 在现在进行时态中go,come,leave,start,arrive等动词常与表示将来的时间状语连用表示将要发生的动作。如：I am coming,Mum!意为“我就来，妈妈！”请看：The train is leaving soon.The train will leave soon.