新概念英语第二册53课PPT课件教学文案.ppt

Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,*,Click to edit Master title style,Click to edit Master text styles,Second level,Third level,Fourth level,Fifth level,*,*,Lesson 53,Hot snake,Read the new words and guess their meanings,hot,fireman,cause,examine,accidentally,remains,wind,wire,volt,power line,solve,mystery,snatch,spark,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 chilly 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,4)hot adj.,带电的,充电的,adj.,热的；新鲜的；棘手的；带电的,充电的,hot-hot-hot,麻辣烫；,hot-wings,辣鸡翅；,hot dog,热狗,hot-tempered,火暴,(,脾气,),的,temper n.,脾气,hot line,热线；,hot topic,热门话题,It sells like a hot cake/cakes.,表示一个东西的畅销,热销,best seller,畅销的东西,hot potato,棘手的问题,hot news,最热点的新闻,4/7/2025,fireman,n 消防队员,hydrant haidrnt,n.消防栓,fire extinguisher,灭火器,Extinguish ikstigwi,put 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,Pride causes failure,cause 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),The cause,of,sth,的起因,The reason,for,sth,的理由,examine,1）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,examine students in English,n.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 death,accident,n.事故,意外,车祸,a car accident,Accidentally=by chance=by accident,我偶然间发现了金矿,I found a gold mine by accident.,remains,1）n.剩余物,残余物,残汤剩饭 残羹冷炙,the remains of a meal,2）n.(古建筑等物)遗址,废墟,圆明园遗址,the remains of Yuanmingyuan,3）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.,remain,1）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.,2）v.仍是,保持不变,他保持沉默。,He remained silent.,wire,n.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,e,lectric wires 电线,wireless adj.无线的,wireless telegraphy 无线电报,volt n.伏特,voltage n.电压,伏特数,power,1）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.,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 solution,The key,to,the question the key,to,the lock,The solution,to,the problem,snatch,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 the paper as his mother was about to see it.,辨析,snatch 迅速而有力(粗鲁地)抓住,抢,snatch a chance,grab 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 language,hold 抓住,握住,托住,Comprehension questions,1 Where was there a big forest fire?,There was a big fire,in California,.,2 Have firemen put it out?,Yes,they have.,3 What have they been trying to find out since then?,They have been trying to find out,how the fire began.,4 What are forest fires often caused by?,Forest fires are 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?,They examined the ground,yesterday.,7 Did they find any broken glass?,No,they didnt.,8 Did they think a cigarette end started the fire?,No,they didnt.,9 They were quite sure it didnt,werent they?,Yes,they were.,10 When was the cause discovered?,The cause was discovered this morning.,11 Who discovered it?,A fireman did.,12 Was it what he was looking for?,No,it wasnt.,Language points,At last firemen have put out a big forest fire in California.,at last 最后，终于，过程很艰难。,他们终于翻过了这座大山。,At last they climbed over the mountain,California=Golden State 黄金州,put out 扑灭，熄灭，关掉,请把灯关掉。,Please put the light out.,m,ake a fire 生火,s,tart a fire 引起火灾,Since then,they have been trying to find out how the fire began.,since then 从那时起，到现在为止,find out,（经过研究、努力等）找出，发现，查出,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.,Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away.,cigarette ends 烟头,t,hrow away 扔掉，丢弃,t,hrow about 随处扔,t,hrow at 扔向（有目标性）,t,hrow to 扔向（无目标性）,They were also quite sure that a cigarette end did not start the fire.,be sure that 对很有把握；,quite sure 相当的把握性,rather adv.相当,fairly adv.相当,公正地,诚实地,quite(completely)ratherfairly,程度一个比一个轻,quite a few 颇有几个(相当多的),start a firecause a fire,start vt.使发生，引起,This morning,however,a firemen accidentally discovered the cause.,However与but区别：,However要接逗号，再加句子。,But直接与句子相连。,accidentally=by chance 偶然地,discover 偶然发现（某个已经存在的东西）,Invent 发明（以前没有的东西）,我不知道谁发现的美洲。,I dont know who discovered America.,你知道起火原因吗？,Do you know the cause of the fire?,He noticed the remains of a snake which was wound round the electric wires of a 16,000-volt power line.,notice 注意别人没注意的东西,the remains表示“尸体，残骸”，必须用复数形式,村民们很惊奇地看到在湖的旁边有一架飞机的残骸。,The villagers were surprised to see the remains of an aeroplane near the lake.,wind,vt.,1)vt.缠绕，卷在上（常与around/round连用）,你介意我把这段电线缠在树上吗？,Do,you,mind if I,wind this piece of wire round the tree?,2)vt.蜿蜒，盘旋,一条小径沿著山谷蜿蜒而上。,A path wound up the valley.,wind ones way 蜿蜒、迂回而行,他们在狭窄的山谷中迂回前进,They wound their way through the narrow valley.,3）转动（把手等），拧紧,wind up ones watch,上紧某人手表的发条,把(车子的)窗子摇下,wind down a window,The explanation was simple but very unusual.A bird had snatched up the snake from the ground and then dropped it on to the wires.,snatched up sth from the ground从地上抓起来,drop vt&vi.无意掉下去的,使落下,使掉落,她把花瓶掉到了地板上。,She dropped the vase on the floor.,茶壶从她手里掉了出来。,The teapot dropped out of her hand。,fall vi.落下，（雨、雪）下，降，跌倒，摔倒,强调的是掉下来的概念,动作,我跌倒了，伤到了我自己。,I fell and hurt myself.,当秋天叶落的时候，我就会回来。,Ill come back,w,hen leaves fall in autumn.,他从楼梯上摔下来，把他的腿摔断了。,He fell down the stairs and broke his leg.,书从桌子上掉到了地上。,The book fell from the table to the floor。,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.,do so 这么做,I refuse to do so.我拒绝这么做,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,我也这样认为。,I think/believe so.,start a fire=cause a fire 引起一场大火,现在完成进行时,构成：have/has been+doing,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）,与现在完成时的联系,They have been living in this city for ten years.,They have lived in this city for ten years.,他们在这个城市已经住了10年了。,I have been working here for five years.,I have worked here for five years.,我在这里已经工作五年了。,现在完成进行时强调动作的连续性、不间断性。,【Special Difficulties】,throw to,，,throw at and throw away,throw,作及物动词主要含义为“投，掷，抛，扔”。,throw to(sb.),扔给（某人）,He threw the ball to me and I caught it.,throw at,对准某一目标扔,The boy threw a stone at the window and broke it.,throw away,扔掉，丢弃,Many people throw away cigarette ends carelessly.,4/7/2025,cause and reason,cause,n.,原因，起因；,Do you know the cause of the war?,What was the cause of the delay?,v.,使,产生,/,发生，引起,cause sth.,导致,引起,What caused the accident?,cause sb.to do sth.,导致某人做某事,4/7/2025,reason,n.,理由，原因,Give me your reasons for going there.,What was the reason for the delay?,作“原因”讲时，,reason,与,cause,可以互换，但,reason,与介词,for,连用；而,cause,则与介词,of,连用。,reason,后面通常跟,why,引导的从句：,That was the reason why the meeting was put off.,v.,推理，劝导，说服,reason with sb.,劝说,(,以道理,),How can you reason with him when he is so worried?,4/7/2025,drop and fall,drop vi.&vt.,（使）掉下，（使）落下，放下（强调的是不小心掉下来）,As he walked past the tree,an apple dropped from it.,The waiter dropped a fork.,fall vi.,落下，（雨、雪）下，降，跌倒，摔倒（强调的是掉下来的概念,动作）,I fell and hurt myself.,When leaves fall in autumn,Ill come back.,4/7/2025,Key to KS Exercises,A,What 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(1.11);,started(1.11),What has happened,：,have put out(1.1),What has been happening,：,have been trying to find(1.2),C,Jack,looked,at his watch for the twentieth time.Suddenly Jill,arrived,.I,ve,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?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,.I,ve,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 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,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(,相当肯定,),，,pletely,certain(,完全肯定,),，,d.nearly certain(,几乎肯定,)4,个选择中只有,c.,同前一句中的,quite sure(,十分确信,),意义最接近，所以选,c.,6.c,只有,c.succeeded in solving it(,成功解决了它,),同前一句中的,was able to solve the,mystery(,解开了这个谜,),的含义相同，所以,c.,是正确答案。其他,3,个选择都与前一句意思不符。,7.d,只有,d.on,是对的,因为它后面的词是,the ground,表示在地面上,只能用介词,on.,其他,3,个选择都不符合题目意思,.,The snake had been on the ground.,这条蛇在地面上。,注意本句说的是在蛇被抓起之前，它在哪？它在地面上。,8.c a.controlled it(,控制了它,),；,b.checked it(,制止了它,);c.extinguished it,(,扑灭了它,),；,d.turned it off(,关掉，关上它,),，只有,c.extinguished it,与前面一句中的,put,out the fire(,把火扑灭,),意义相同，所以选,c.,9.d,只有,d.this morning,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.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,同前一句中的,accidentally,(,偶然地,),意义相同，所以选,a.,11.c,前一句的短语,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的短语,.,a.Thats so,就是如此,b.like this,像这样,d.so,因此,这,3,个选择都不符合题目意思,.,只有,c.Thats how(,那就是,.,的方法,),同,In this way,的含义相符合,因为,how,相当于,the way in,which,所以选,c.,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,同前一句的,snatched(,抓住,),意义相同,所以选,c.,