新概念英语第二册课件Lesson53(共50张PPT)

1、Lesson 53Hot snake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n. 消防队员v. 引起； n. 原因v. 检查adv. 意外地，偶然地n. 尸体，残骸v. 缠绕n. 电线n. 伏特（电压单位）电力线v. 解决n. 谜v. 抓住n. 电火花hot adj 1）热的，炎热的Strike while the iron is hot. 趁热打铁.hot 炎热的 warm 温暖的 cool 凉爽的 ch

2、illy 寒冷的 cold 寒冷的,严寒的2）调味品辣的辣椒和芥末是辣的.Pepper and mustard are hot. 3）强烈的,激烈的,热烈的.have a hot temper 脾气暴躁a hot potato 棘手或讨厌的事物或情况fireman=firefighter n 消防队员hydrant haidrnt n.消防栓fire extinguisher 灭火器 Extinguish ikstigwiput out 灭火cause 1）V. 引起cause sth : 引起（麻烦）粗心导致事故Carelessness causes accidents. 骄傲使人失败Pri

3、de causes failurecause sb to do sth 引起某人做某事, 导致某人做某事2）n. 原因 cause : 强调事情发生的直接原因(一个)reason : 其他各种的理由(很多个)be caused by某事由引起 carelessness examine1）v. 仔细观察,检查,调查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. 诊查医生仔细的诊察了病人。The doctor examined his patient carefully 3）v. 考试,测试examin

4、e students in Englishn. exam 考试=examination accidentally adv. 意外地,偶然地adj. accidental 意外的,偶然的 意外死亡an accidental deathaccidentn. 事故,意外车祸a car accidentAccidentally=by chance=by accident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 Californi

5、a. 消防队员们终于扑灭了加利福尼亚的一场森林大火。 at last（终于，到底）表示经过一番努力之后。put out可以表示“扑灭”、“熄灭”、“关掉”Please put the light/ fire out. 请把灯关掉把火灭掉。Far water does not put out near fire.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。 since then 从那时起，到现在为止find out （经过研究、努力等）找出，发现，

6、查出We shall find out the truth early or late.我们迟早会查明事实真相。Go and find out the truth to report back quickly.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。Ill try and find out the name of the person who saved my life yesterday.3. Forest fires are often caused by broken glass or by cigarette ends which people carelessly

7、 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。 be caused by 由所引起His death was caused by a high fever.他的死亡是由高烧引起的。The accident was caused by the drunk driver.事故是由酒后驾车的司机造成的。cigarette ends 烟头which 引导的是定语从句4. Yesterday the firemen examined the ground carefully, but were not able to find any broken glass. 昨天，消

8、防队员仔细查看了地面，但未能发现碎玻璃。 be able to 能够 ；be not able to 没有能够The doctors were not able to treat this disease.医生治不了这种病。I am sorry, I am not able to help you.对不起，我无法帮助您。I was not able to get in touch with you yesterday.我昨天无法和你联络上。他现在没办法接你的电话。He is not able to take your call at the moment.我无法回答您的问题。I am not

9、able to help you with your questions.5. They were also quite 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。 be sure 确定Be sure to sweep the room clean.一定要把房间打扫干净。I am sure you would get along very well with him.我相信你一定会跟他相处得很好。One thing is sure; he cant have gone far.有一点是肯定的，他不可

10、能走得很远。She is sure to pass the examination.她一定会通过考试。start a firecause a fire 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。 discover 发现（偶然发现某个已经存在的东西）They discover that the new teacher is very strict.他们发现新来的老师非常严格。He was surprised to discover that

11、 his best friend had turned traitor.他惊讶地发现他最好的朋友竟成了叛徒。I do not discover that until I go to pay.我去付钱的时候才发现。 remains1）n. 剩余物,残余物 残汤剩饭the remains of a meal2）n. (古建筑等物)遗址,废墟 圆明园遗址the remains of Yuanmingyuan3）n. 遗体,遗骸 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）

12、v. 留下,剩下,遗留大火之后，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。Much remains to be done. 木已成舟Whats done is done.2）v. 仍是,保持不变他保持沉默。He remained silent. wiren. 金属线，电线 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.telephone wires 电话线Electric wires 电线wireless adj

13、. 无线的 wireless telegraphy 无线电报volt n. 伏特voltage n. 电压,伏特数 power1）电力，动力 electric power 电力water power 水力2）力,能力 （自然的体力、智力）His power is failing.他的体力在衰退。3）权力,支配力,势力 political power 政治权力not within ones power= beyond ones power 力所不能及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.

14、solve v. 解决,解答,回答 =work out解决问题solve a problem解开谜团solve a mystery我们必须解决经济危机。We must solve the economic crisis.n. solution 解决,解答花费了很长时间才找出解决方法。It took a long time to find the solutionsnatch1）v. 抢,夺,掠取 snatch up 抓起来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。He snatched th

15、e paper as his mother was about to see it.2）v. (趁机)迅速取得,急急忙忙吃完饭 他出其不意,吻了她一下。He snathed a kiss from her.辨析snatch 迅速而有力(粗鲁地)抓住,抢 snatch a chancegrab 抓,抢,抢夺,抓住(热切而拼命地) grab sth from sb/ grab sth from sth grasp 1) 抓住或咬住,抓紧 grasp a chance 抓住机会 2)掌握 grasp a languagehold 抓住,握住,托住 现在完成进行时构成：have/has been+do

16、ing含义：1）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。2）表示在说话时刻之前到现在正在进行的动作。与现在完成时的区别I have been writing a book.我一直在写一本书。（动作还将继续下去） I have written a book.我已经写了一本书。（动作已经完成7. he noticed the remains of a snake which was wound round the electric wires of a 16,.000-volt power line. 他发现了缠绕在16，000伏高压线上的一条死蛇。 the remains表示“

17、尸体”、“残骸”，必须用复数形式wound为wind的过去分词。wind在这里不表示“蜿蜒”，而表示“卷在上”、“缠绕”，常与aroundround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？ 8. In this way, he was able to solve the mystery. The explanation was simple but very unusual. 就这样，他解开了起火之谜。解释很简单，却异乎寻常。 Solve v. 解决 solve the problem 解决问题 9.

18、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。于是蛇就缠住了几根电线。 snatch v. 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） drop & fall a. drop 表示 “使落下、使掉落”，是及物动词, 带宾语： He dropped the bag. b. fall 表示 “掉下、跌倒”，是不及物动词，不能带宾语。 He fell do

19、wn the stairs and broke his leg. 10. The snake then wound itself round the wires. When 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 so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： Has Susan got into University? I

20、believe / think so. 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 f

21、ire began. 4 What 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, theydid

22、nt. 9 They were quite sure it 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 1

23、6, 000-volt power line. Asking questions：Ask 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

24、to discover the cause. What / Who4 fires are often 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 / W

25、hoKey to Summary writingNow that firemen have put out a big forest 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 b

26、een dropped by a bird on to some electric wires. In winding itself round 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 woun

27、d(1. 8); was able to s olve(1. 9);dropped(1. 10); wound(1.11);it did so(1. 11); sent(1. 11);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 h

28、our, he said angrily. You never come on time. Oh, is that so?Jill answered. Were you here at 2. 30? Jack 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 d

29、oing since then? Jack asked. Ive just been to the hairdressers，Jill answered brightly.c 根据课文第二行 they have been trying to find out how the fire began 可以判断出只有c. wanted to find out what had caused the fire 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10-12行A bird had snatched up the snake from the ground an

30、d 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原因，其他3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often, 表示经常性的动作，因此应该用一般现在时。 a. is causing 是进行时，b. has caused 是完成时，d. is caused by 是现在时被动语态，而本句需要主动语态。 只有c. causes 是一般现在时，第3人称单数形式，本句的主语Broken glass 是单数，所以c.最符合语法，所以选c.5. c a. almost certain(几乎肯定)， b. fairly certain(相当