新概念英语第二册课件Lesson53(共50张PPT).ppt

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1、Lesson 53Hot snake单词学习单词学习hot fireman cause examine accidentally remains windwire volt power line solve mystery snatch spark adj.带电的，通电的带电的，通电的n.消防队员消防队员v.引起；引起；n.原因原因v.检查检查adv.意外地，偶然地意外地，偶然地n.尸体，残骸尸体，残骸v.缠绕缠绕n.电线电线n.伏特（电压单位）伏特（电压单位）电力线电力线v.解决解决n.谜谜v.抓住抓住n.电火花电火花hot adj 1）热的，炎热的）热的，炎热的Strike while t

2、he iron is hot.趁热打铁趁热打铁.hot 炎热的炎热的 warm 温暖的温暖的 cool 凉爽的凉爽的 chilly 寒冷的寒冷的 cold 寒冷的寒冷的,严严寒的寒的2）调味品辣的）调味品辣的辣椒和芥末是辣的辣椒和芥末是辣的.Pepper and mustard are hot.3）强烈的）强烈的,激烈的激烈的,热烈的热烈的.have a hot temper 脾气暴躁脾气暴躁a hot potato 棘手或讨厌的事物或情况棘手或讨厌的事物或情况fireman=firefighter n 消防队员消防队员hydrant haidrnt n.消防栓消防栓fire extingui

3、sher 灭火器灭火器 Extinguish ikstigwiput out 灭火灭火cause 1）V.引起引起cause sth:引起（麻烦）引起（麻烦）粗心导致事故粗心导致事故Carelessness causes accidents.骄傲使人失败骄傲使人失败Pride causes failurecause sb to do sth 引起某人做某事引起某人做某事,导致某人做某事导致某人做某事2）n.原因原因 cause:强调事情发生的直接原因强调事情发生的直接原因(一个一个)reason:其他各种的理由其他各种的理由(很多个很多个)be caused by某事由某事由引起引起 care

4、lessness examine1）v.仔细观察仔细观察,检查检查,调查调查消防队员检查了森林的每一寸土地。消防队员检查了森林的每一寸土地。The firefighters examined every inch of the forest.2）v.诊查诊查医生仔细的诊察了病人。医生仔细的诊察了病人。The doctor examined his patient carefully 3）v.考试考试,测试测试examine students in Englishn.exam 考试考试=examination accidentally adv.意外地意外地,偶然地偶然地adj.accidenta

5、l 意外的意外的,偶然的偶然的 意外死亡意外死亡an accidental deathaccidentn.事故事故,意外意外车祸车祸a car accidentAccidentally=by chance=by accident我偶然间发现了金矿我偶然间发现了金矿I found a gold mine by accident/accidentally.1.At last firemen have put out a big forest fire in California.消防队员们终于扑灭了加利福尼亚的一场森林大火。消防队员们终于扑灭了加利福尼亚的一场森林大火。atlast（终于，到底）表

6、示经过一番努力之后。putout可以表示“扑灭”、“熄灭”、“关掉”Pleaseputthelight/fireout.请把灯关掉把火灭掉。Farwaterdoesnotput out nearfire.谚远水救不了近火。2.Since then,they have been trying to find out how the fire began.从那时起，他们一直试图找出起火的原因。从那时起，他们一直试图找出起火的原因。sincethen从那时起，到现在为止findout（经过研究、努力等）找出，发现，查出Weshallfind out thetruthearlyorlate.我们迟早会

7、查明事实真相。Goandfind out thetruthtoreportbackquickly.立刻查明事实真相回来汇报。我会试着查出昨天救了我的人的名字。Illtryandfind out thenameofthepersonwhosavedmylifeyesterday.3.Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away.森林火灾时常由破碎的玻璃或人们随手扔掉的香烟头引起。森林火灾时常由破碎的玻璃或人们随手扔掉的香烟头引起。becau

8、sedby由所引起Hisdeathwascaused byahighfever.他的死亡是由高烧引起的。Theaccidentwascaused bythedrunkdriver.事故是由酒后驾车的司机造成的。cigarette ends 烟头烟头which 引导的是引导的是定语从句定语从句4.Yesterday the firemen examined the ground carefully,but were not able to find any broken glass.昨天，消防队员仔细查看了地面，但未能发现碎玻璃。昨天，消防队员仔细查看了地面，但未能发现碎玻璃。be able t

9、o 能够能够；be not able to 没有能够没有能够Thedoctorswerenot able totreatthisdisease.医生治不了这种病。Iamsorry,Iamnot able tohelpyou.对不起，我无法帮助您。Iwasnot able togetintouchwithyouyesterday.我昨天无法和你联络上。他现在没办法接你的电话。He isnot able totakeyourcallatthemoment.我无法回答您的问题。Iamnot able tohelpyouwithyourquestions.5.They were also quite

10、sure that a cigarette end did not start the fire.他们还十分肯定火灾也不是由烟头引起的。他们还十分肯定火灾也不是由烟头引起的。be sure 确定确定Be suretosweeptheroomclean.一定要把房间打扫干净。Iam sureyouwouldgetalongverywellwithhim.我相信你一定会跟他相处得很好。Onethingis sure;hecanthavegonefar.有一点是肯定的，他不可能走得很远。Sheis suretopasstheexamination.她一定会通过考试。start a firecause

11、 a fire 引发火灾引发火灾 6.This morning,however,a fireman accidentally discovered the cause.然而今天上午，一个消防队员偶然发现了起火的原因。然而今天上午，一个消防队员偶然发现了起火的原因。discover 发现（偶然发现某个已经存在的东西）发现（偶然发现某个已经存在的东西）Theydiscoverthatthenewteacherisverystrict.他们发现新来的老师非常严格。Hewassurprisedtodiscoverthathisbestfriendhadturnedtraitor.他惊讶地发现他最好的朋

12、友竟成了叛徒。IdonotdiscoverthatuntilIgotopay.我去付钱的时候才发现。remains1）n.剩余物剩余物,残余物残余物 残汤剩饭残汤剩饭the remains of a meal2）n.(古建筑等物古建筑等物)遗址遗址,废墟废墟 圆明园遗址圆明园遗址the remains of Yuanmingyuan3）n.遗体遗体,遗骸遗骸 毛主席的遗体被保存在水晶棺材里。毛主席的遗体被保存在水晶棺材里。The remains of Chairman Mao were kept well in a crystal coffin.remain1）v.留下留下,剩下剩下,遗留遗留

13、大火之后，我的房子里什么也没剩下。大火之后，我的房子里什么也没剩下。After the fire,nothing remained in my house.要做的事还很多。要做的事还很多。Much remains to be done.木已成舟木已成舟Whats done is done.2）v.仍是仍是,保持不变保持不变他保持沉默。他保持沉默。He remained silent.wiren.金属线，电线金属线，电线 他用一根金属线把筐绑到了自行车上。他用一根金属线把筐绑到了自行车上。He tied a basket to the bicycle with a piece of wire.t

14、elephone wires 电话线电话线Electric wires 电线电线wireless adj.无线的无线的 wireless telegraphy 无线电报无线电报volt n.伏特伏特voltage n.电压电压,伏特数伏特数 power1）电力，动力）电力，动力 electric power 电力电力water power 水力水力2）力）力,能力能力 （自然的体力、智力）（自然的体力、智力）His power is failing.他的体力在衰退。他的体力在衰退。3）权力）权力,支配力支配力,势力势力 political power 政治权力政治权力not within on

15、es power=beyond ones power 力所不能及力所不能及我无法理解计算机是如何工作的。我无法理解计算机是如何工作的。It is beyond my power to understand how the computer works.solve v.解决解决,解答解答,回答回答 =work out解决问题解决问题solve a problem解开谜团解开谜团solve a mystery我们必须解决经济危机。我们必须解决经济危机。We must solve the economic crisis.n.solution 解决解决,解答解答花费了很长时间才找出解决方法。花费了很长

16、时间才找出解决方法。It took a long time to find the solutionsnatch1）v.抢抢,夺夺,掠取掠取 snatch up 抓起来抓起来贼把她的包抓起来逃跑了。贼把她的包抓起来逃跑了。The thief snatched her bag and ran away.在他妈妈刚要看那张纸的时候，他把它夺走了。在他妈妈刚要看那张纸的时候，他把它夺走了。He snatched the paper as his mother was about to see it.2）v.(趁机趁机)迅速取得迅速取得,急急忙忙吃完饭急急忙忙吃完饭 他出其不意他出其不意,吻了她一下。

17、吻了她一下。He snathed a kiss from her.辨析辨析snatch 迅速而有力迅速而有力(粗鲁地粗鲁地)抓住抓住,抢抢 snatch a chancegrab 抓抓,抢抢,抢夺抢夺,抓住抓住(热切而拼命地热切而拼命地)grab sth from sb/grab sth from sth grasp 1)抓住或咬住抓住或咬住,抓紧抓紧 grasp a chance 抓住机会抓住机会 2)掌握掌握 grasp a languagehold 抓住抓住,握住握住,托住托住 现在完成进行时现在完成进行时构成：构成：have/has been+doing含义：含义：1）表示从过去某时开

18、始一直持续到现在的）表示从过去某时开始一直持续到现在的动作，并且还将持续下去。动作，并且还将持续下去。2）表示在说话时刻之前到现在正在进行的）表示在说话时刻之前到现在正在进行的动作。动作。与现在完成时的区别与现在完成时的区别I have been writing a book.我一直在写一本书。我一直在写一本书。（动作还将继续下去）（动作还将继续下去）I have written a book.我已经写了一本书。我已经写了一本书。（动作已经完成（动作已经完成7.henoticedtheremainsofasnakewhichwaswoundroundtheelectricwiresofa16,

19、.000-voltpowerline.他发现了缠绕在16，000伏高压线上的一条死蛇。the remains表示表示“尸体尸体”、“残骸残骸”，必须用复数形式，必须用复数形式wound为为wind的过去分词。的过去分词。wind在这里不表示在这里不表示“蜿蜒蜿蜒”，而表示，而表示“卷在卷在上上”、“缠绕缠绕”，常与，常与aroundround连用：连用：Did you wind this piece of wire round the tree?是你把这根铁丝缠在树上的吗？是你把这根铁丝缠在树上的吗？8.In this way,he was able to solve the mystery.

20、The explanation was simple but very unusual.就这样，他解开了起火之谜。解释很简单，却异就这样，他解开了起火之谜。解释很简单，却异乎寻常。乎寻常。Solve v.解决解决 solve the problem 解决问题解决问题 9.A bird had snatched up the snake from the ground and then dropped it on to the wires.一只鸟把蛇从地上抓起来，然后把它扔到了电线上。于一只鸟把蛇从地上抓起来，然后把它扔到了电线上。于是蛇就缠住了几根电线。是蛇就缠住了几根电线。snatch v.

21、抓抓 The man snatched her purse and ran.那人抓起她的钱包就跑。（强调动作很快很猛）那人抓起她的钱包就跑。（强调动作很快很猛）drop&fall a.drop 表示表示“使落下、使掉落使落下、使掉落”，是及物动词，是及物动词,带宾语：带宾语：He dropped the bag.b.fall 表示表示“掉下、跌倒掉下、跌倒”，是不及物动词，不能带宾，是不及物动词，不能带宾语。语。He fell down the stairs and broke his leg.10.The snake then wound itself round the wires.Whe

22、n it did so,it sent sparks down to the ground and these immediately started a fire.于是蛇就缠住了几根电线。当它这样做时，把火花送到了于是蛇就缠住了几根电线。当它这样做时，把火花送到了地面，这些火花立刻引起了一场大火。地面，这些火花立刻引起了一场大火。When it did so当它这样做时当它这样做时 so常用于一些动词之后，代指前面提过的某个动作某件常用于一些动词之后，代指前面提过的某个动作某件事，以免重复：事，以免重复：Has Susan got into University?I believe/thin

23、k so.本课所需掌握词组本课所需掌握词组:put out in this way since then solve the mystery find out snatch up throw away wind round Comprehension questions1 Where was there a big forest fire?In California.2 Have firemen put it out?Yes,they have.3 What have they been trying to find out since then?How the fire began.4 Wh

24、at are forest fires often caused by?Broken glass or cigarette ends.5 People are careless,arent they?Yes,they are.6 When did the firemen examine the ground?Yesterday.7 Did they find any broken glass?No,they didnt.8 Did they think a cigarette end started the fire?No,theydidnt.9 They were quite sure it

25、 didnt,werent they?(Yes,they were.)10 When was the cause discovered?(This morning.)11 Who discovered it?(A fireman did.)12 Was it what he was looking for?(No,it wasnt.)13 What did he notice?The remains of a snake which was wound round the electric wires of a 16,000-volt power line.Asking questions：A

26、sk me ifT：theres been a big forest fire in California.S：Has there been a big forest fire in California?T：Where?S：Where has been a big forest fire?1 theres been a big forest fire in California.Where2 firemen have put it out.What/Who3 theyve been trying to discover the cause.What/Who4 fires are often

27、caused by broken glass.What by/How/What5 theyre also caused by cigarette ends.What else6 the firemen examined the ground yesteday.When/What/Who7 they looked for broken glass.What8 a fireman discovered the cause accidentally.How/What/WhoKey to Summary writingNow that firemen have put out a big forest

28、 fire in California,they have been trying to discover its cause.There was no evidencethat it was started by broken glass or a cigarette end.However a fireman has just solved the mystery.He noticed the remains of a snake which had been dropped by a bird on to some electric wires.In winding itself rou

29、nd the wires,the snake had sent sparks to the ground and this caused the fire.Key to KS ExercisesAWhat happened：began(1.2);examined(1.4);were not able tofind(1.5);did not start(1.6);discovered(1.7);noticed(1.8);was wound(1.8);was able to s olve(1.9);dropped(1.10);wound(1.11);it did so(1.11);sent(1.1

30、1);started(1.11)What has happened：have put out(1.1)What has been happening：have been trying to find(1.2)CJack looked at his watch for the twentieth time.Suddenly Jill arrived.Ive been waiting for over an hour,he said angrily.You never come on time.Oh,is that so?Jill answered.Were you here at 2.30?Ja

31、ck went red.Well,he said,I got here five minutes late myself,but you werent here.I came here at exactly 2.30,Jill said,and I waited for five minutes,but you didnt come.What have you been doing since then?Jack asked.Ive just been to the hairdressers，Jill answered brightly.1.c根据课文第二行theyhavebeentrying

32、tofindouthowthefirebegan可以判断出只有c.wantedtofindoutwhathadcausedthefire最能说明消防队员仔细查看地面的原因，其他3个选择都不够全面。2.d 根据课文第根据课文第10-12行行A bird had snatched up the snake from the ground and then dropped it on to the wires When it I did so,it sent sparks down to the ground and these immediately started a fire 可以判断只有可以

33、判断只有d.a snake which had been dropped on to the wires by a bird 与课文的实际内容相符，只有它是引起火灾的与课文的实际内容相符，只有它是引起火灾的原因，其他原因，其他3个选择都不符合课文的实际内容。个选择都不符合课文的实际内容。3.a只有a.since最合乎题目意思和语法。因为本句是现在完成进行时，只有since引导的时间短语最适合于完成进行时态，表示“自从以来”，所以应该选a.其他3个选择都不能引导合适的时间短语。4.c 本句表示时间的词是本句表示时间的词是often,表示经表示经常性的动作，因此应该用一般现在时。常性的动作，因此应

34、该用一般现在时。a.is causing 是进行时，是进行时，b.has caused 是完成时，是完成时，d.is caused by 是是现在时被动语态，而本句需要主动语态。现在时被动语态，而本句需要主动语态。只有只有c.causes 是一般现在时，第是一般现在时，第3人称单数形式，本句人称单数形式，本句的主语的主语Broken glass 是单数，所以是单数，所以c.最最符合语法，所以选符合语法，所以选c.5.c a.almost certain(几乎肯定几乎肯定)，b.fairly certain(相当肯定相当肯定)，pletely certain(完全肯定完全肯定)，d.nearly

35、 certain(几几乎肯定乎肯定)4个选择中只有个选择中只有c.同前一句中的同前一句中的quite sure(十分确信十分确信)意义最接近，所以选意义最接近，所以选c.6.c 只有只有c.succeeded in solving it(成功解决了它成功解决了它)同前一句中的同前一句中的 was able to solve the mystery(解开了这个谜解开了这个谜)的含义相同，的含义相同，所以所以c.是正确答案。是正确答案。其他其他3个选择都与个选择都与前一句意思不符。前一句意思不符。7.d 只有只有d.on是对的是对的,因为它后面的词是因为它后面的词是the ground,表示在地面

36、上表示在地面上,只能用介词只能用介词on.其他其他3个选择都不符合题目意思个选择都不符合题目意思.The snake had been on the ground.这这条蛇在地面上。条蛇在地面上。注意本句说的是在蛇被抓起之前，它在哪注意本句说的是在蛇被抓起之前，它在哪？它在地面上。？它在地面上。8.c a.controlled it(控制了它控制了它)；b.checked it(制止了它制止了它);c.extinguished it(扑灭了它扑灭了它)；d.turned it off(关掉，关关掉，关上它上它)，只有，只有c.extinguished it 与前面与前面一句中的一句中的 put

37、 out the fire(把火扑灭把火扑灭)意义相同，所以意义相同，所以选选c.9.d只有d.thismorning今天早上,是正确的表达方式.其它3个选择都不符合习惯用法,都不是正确的表达方式.所以选d.10.aa.bychance(偶然)，b.chancily(没有这个词)；c.fortunately(幸运地)和d.luckily(侥幸地，幸运地)这4个选择中只有a.bychance同前一句中的accidentally(偶然地)意义相同，所以选a.11.c前一句的短语Inthisway是用这种方法,本句需要选一个同这一短语含义相符合的短语.a.Thatsso就是如此b.likethis像这样d.so因此,这3个选择都不符合题目意思.只有c.Thatshow(那就是.的方法)同Inthisway的含义相符合,因为how相当于thewayinwhich,所以选c.12.ca.taken(拿),b.pulled(拉,拖),c.seized(抓住)和d.carried(携带)4个选择中只有c.seized同前一句的snatched(抓住)意义相同,所以选c.