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1、Lesson 53Hot snake第1页单词学习hot fireman cause examine accidentally remains windwire volt power line solve mystery snatch spark adj.带电，通电带电，通电n.消防队员消防队员v.引发；引发；n.原因原因v.检验检验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.处理处理n.谜谜v.抓住抓住n.电火花电火花第2页hot adj 1）热，酷热Strike while the iron is
2、hot.趁热打铁.hot 酷热 warm 温暖 cool 清凉 chilly 严寒 cold 严寒,严寒2）调味品辣辣椒和芥末是辣.Pepper and mustard are hot.3）强烈,激烈,热烈.have a hot temper 脾气急躁a hot potato 棘手或讨厌事物或情况第3页fireman n 消防队员hydrant haidrnt n.消防栓第4页fire extinguisher 灭火器 Extinguish ikstigwiput out 灭火第5页cause 1）V.引发cause sth:引发（麻烦）粗心造成事故Carelessness causes ac
3、cidents.骄傲使人失败Pride causes failurecause sb to do sth 引发某人做某事,造成某人做某事2）n.原因 cause:强调事情发生直接原因(一个)reason:其它各种理由(很多个)The cause of sth 起因起因The reason for sth 理由理由第6页 examine1）v.仔细观察,检验,调查消防队员检验了森林每一寸土地。The firefighters examined every inch of the forest.2）v.诊查医生仔细诊察了病人。The doctor examined his patient care
4、fully 3）v.考试,测试examine students in Englishn.exam 考试=examination第7页 accidentally adv.意外地,偶然地adj.accidental 意外,偶然 反义词 intentional意外死亡an accidental deathaccidentn.事故,意外车祸a car accidentAccidentally=by chance=by accident我偶然间发觉了金矿I found a gold mine by accident.第8页 remains1）n.剩下物,残余物 残汤剩饭the remains of a
5、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 毛主席遗体被保留在水晶棺材里。The remains of Chairman Mao were kept well in a crystal coffin.第9页remain1）v.留下,剩下,遗留大火之后，我房子里什么也没剩下。After the fire,nothing remained in my house.要做事还很多。Much remains to be done.木已成舟Whats done is done.2）v.仍是,保持不变他保持缄默。He rema
6、ined silent.第10页 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.无线 wireless telegraphy 无线电报volt n.伏特voltage n.电压,伏特数第11页 power1）电力，动力 electric power 电力water power 水力2）力,能力（自然体力、智力）His power is failing.他体力在衰退。3）权力,支配
7、力,势力 political power 政治权力not within ones power=beyond ones power 力所不能及我无法了解计算机是怎样工作。It is beyond my power to understand how the computer works.第12页solve v.处理,解答,回答=work out处理问题solve a problem解开谜团solve a mystery我们必须处理经济危机。We must solve the economic crisis.n.solution 处理,解答花费了很长时间才找出处理方法。It took a long
8、 time to find the solution第13页snatch1）v.抢,夺,掠取 snatch up 抓起来贼把她包抓起来逃跑了。The thief snatched her bag and ran away.在他妈妈刚要看那张纸时候，他把它夺走了。He snatched the paper as his mother was about to see it.2）v.(趁机)快速取得,急急忙忙吃完饭 他出其不意,吻了她一下。He snathed a kiss from her.第14页辨析snatch 快速而有力(粗鲁地)抓住,抢 snatch a chancegrab 抓,抢,抢
9、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 第15页现在完成进行时现在完成进行时组成：组成：have/has been+doing含义：含义：1）表示从过去某时开始一直连续到现在动）表示从过去某时开始一直连续到现在动作，而且还将连续下去。作，而且还将连续下去。2）表示在说话时刻之前到现在正在进行动）表示在说话时刻之前到现在正在进行动作。作。第16页与现在完成时区分与现在完成时区分I have been
10、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（动作已经完成第17页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一场森林大火。消防队员们终于扑灭了加利福尼亚一场森林大火。（1）at last（终于，到底）表示经过一番努力之后。（终于，到底）表示经过一番努力之后。（2）put out能够表示能够表示“扑灭扑灭”、“熄灭熄灭”、“关掉关
11、掉”等等含义：含义：Please put the light/fire out.请把灯关掉把火灭掉。请把灯关掉把火灭掉。（3）forest即使是名词，但在句中起形容词作用，修饰即使是名词，但在句中起形容词作用，修饰fire。第18页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原因。从那时起，他们一直试图找出起火原因。since then 从那时起，到现在为止从那时起，到现在为止find out（经过研究、努力等）找出，发觉，查出（经过研究、努力等）找出，发觉，查出我会试着查出昨
12、天救了我人名字。我会试着查出昨天救了我人名字。Ill try and find out the name of the person who saved my life yesterday.第19页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玻璃或人们随手扔掉香烟头引发。森林火灾时常由破碎玻璃或人们随手扔掉香烟头引发。cigarette ends 烟头烟头Throw away 扔掉，丢弃扔掉，丢弃Throw abo
13、ut 随地扔随地扔Throw at 扔向（有目标性）扔向（有目标性）Throw to 扔向（无目标性扔向（无目标性第20页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，但未能发觉碎玻璃。昨天，消防队员仔细查看了地面，但未能发觉碎玻璃。examine v.检验，名词形式是检验，名词形式是examination,通常简写成通常简写成exam,表示考试。表示考试。be able to 能够能够；be not able to
14、没有能够没有能够第21页5.They were also quite sure that a cigarette end did not start the fire.他们还十分必定火灾也不是由烟头引发。他们还十分必定火灾也不是由烟头引发。quite sure 相当把握性相当把握性start a firecause a fire start vt.使使发生，引发发生，引发第22页6.This morning,however,a fireman accidentally discovered the cause.然而今天早晨，一个消防队员偶然发觉了起火原因。然而今天早晨，一个消防队员偶然发觉了起
15、火原因。Accidentally 表示事情出乎意料地发生，即表示事情出乎意料地发生，即“意外地、意外地、偶然地偶然地”discover含有偶然发觉（某个已经存在东西）意思，在含有偶然发觉（某个已经存在东西）意思，在discover前面加上前面加上accidentally愈加强了愈加强了“偶然性偶然性”和和“意外性意外性”。第23页7.he noticed the remains of a snake which was wound round the electric wires of a 16,.000-volt power line.他发觉了缠绕在16，000伏高压线上一条死蛇。the r
16、emains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过去分词。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吗？是你把这根铁丝缠在树上吗？第24页8.In this way,he was able to solve the mystery.The explanation was simple but very unusual.就这么，
17、他解开了起火之谜。解释很简单，却异就这么，他解开了起火之谜。解释很简单，却异乎寻常。乎寻常。Solve v.处理处理 e.g.solve the problem 处理问题处理问题 第25页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.抓抓 The man snatched her purse and ran.那人
18、抓起她钱包就跑。（强调动作很快很猛）那人抓起她钱包就跑。（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.第26页10.The snake then wound itself round the wires.When it did so,it sent sparks down to the
19、 ground and these immediately started a fire.于是蛇就缠住了几根电线。当它这么做时，把火花送到了于是蛇就缠住了几根电线。当它这么做时，把火花送到了地面，这些火花立刻引发了一场大火。地面，这些火花立刻引发了一场大火。When it did so当它这么做时当它这么做时 so惯用于一些动词之后，代指前面提过某个动作某件事，惯用于一些动词之后，代指前面提过某个动作某件事，以免重复：以免重复：Has Susan got into University?I believe/think so.第27页本课所需掌握词组本课所需掌握词组:put out in thi
20、s way since then solve the mystery find out snatch up throw away wind round 第28页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 What are forest fires often caused
21、 by?Broken glass or cigarette ends.第29页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.第30页9 They were quite sure it didnt,werent they?(Yes,
22、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.)第31页13 What did he notice?The remains of a snake which was wound round the electric wires of a 16,000-volt power line.第32页Asking questions：Ask me ifT：theres
23、 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?第33页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 caused by br
24、oken glass.What by/How/What5 theyre also caused by cigarette ends.What else第34页6 the firemen examined the ground yesteday.When/What/Who7 they looked for broken glass.What8 a fireman discovered the cause accidentally.How/What/Who第35页Key to Summary writingNow that firemen have put out a big forest fir
25、e 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 round t
26、he wires,the snake had sent sparks to the ground and this caused the fire.第36页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
27、1);started(1.11)What has happened：have put out(1.1)What has been happening：have been trying to find(1.2)第37页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 2.3
28、0?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 doing since then?Jack asked.Ive just been to the hairdressers，Jill answered brightly.第38页1.c 依据课文第二行 they hav
29、e been trying to find out how the fire began 能够判断出只有c.wanted to find out what had caused the fire 最能说明消防队员仔细查看地面原因，其它3个选择都不够全方面。第39页2.d 依据课文第依据课文第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 i
30、mmediately started a fire 能够判断只有能够判断只有d.a snake which had been dropped on to the wires by a bird 与课文实际内容相符，只有它是引发火灾原因，与课文实际内容相符，只有它是引发火灾原因，其它其它3个选择都不符合课文实际内容。个选择都不符合课文实际内容。第40页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.其它3个选择都不能引导适当时间短语。第41页4.c 本句表示时间词是本句表示时间词是often
31、,表示经常表示经常性动作，所以应该用普通现在时。性动作，所以应该用普通现在时。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 是普通现在时，第是普通现在时，第3人称单数形式，本句人称单数形式，本句主语主语Broken glass 是单数，所以是单数，所以c.最符最符合语法，所以选合语法，所以选c.第42页5.c a.almost certain(几乎必定几乎必定)，b.fairly certain(相当必定相当必定)，p
32、letely certain(完全必定完全必定)，d.nearly certain(几几乎必定乎必定)4个选择中只有个选择中只有c.同前一句中同前一句中quite sure(十分确信十分确信)意义最靠近，所以选意义最靠近，所以选c.第43页6.c 只有只有c.succeeded in solving it(成功处理了它成功处理了它)同前一句中同前一句中 was able to solve the mystery(解开了这个谜解开了这个谜)含义相同，所含义相同，所以以c.是正确答案。是正确答案。其它其它3个选择都与前个选择都与前一句意思不符。一句意思不符。第44页7.d 只有只有d.on是正确是
33、正确,因为它后面词是因为它后面词是the ground,表示在地面上表示在地面上,只能用介词只能用介词on.其它其它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。注意本句说是在蛇被抓起之前，它在哪？注意本句说是在蛇被抓起之前，它在哪？它在地面上。它在地面上。第45页8.c a.controlled it(控制了它控制了它)；b.checked it(阻止了它阻止了它);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
34、.extinguished it 与前面与前面一句中一句中 put 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.第46页9.d 只有d.this morning 今天早上,是正确表示方式.其它3个选择都不符合习惯使用方法,都不是正确表示方式.所以选d.第47页10.a a.by chance(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.by chance 同前一句中accidentally(偶然地)意义相同，所以选a.第48页11.c 前一句短语In this way 是用这种方法,本句需要选一个同这一短语含义相符合短语.a.Thats so 就是如此 b.like this 像这么 d.so 所以,这3个选择都不符合题目意思.只有c.Thats how(那就是.方法)同In this way 含义相符合,因为how 相当于the way in which,所以选c.第49页12.c a.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snatched(抓住)意义相同,所以选c.第50页第51页