新概念英语第二册课件Lesson53（共49页）

这是一份新概念英语第二册课件Lesson53（共49页），共48页。
A True Stry
A bear went ut f the z t search his child. Surrunded by s many peple , he climbed the electrical ple ut f panic(惊慌).
When he reached the tp f the ple, he didn’t knw whtat t d.
He decided t get dwn, but unfrtunately, he was killed fr tuching the wire.
Finally, he fallen frm the ple and passed away.
What will happen when a snake meet an eagle which is right arund a ple and electical wire ?
What will happen when a snake meet an eagle, right arund the wire ?
They caues a fire.
【New wrds and expressins】（13） ht adj. 带电的，充电的fireman n. 消防队员cause v. 引起； n. 原因examine v. 检查accidentally adv. 意外地，偶然地remains n. 尸体，残骸wire n. 电线vlt n. 伏特（电压单位）pwer line 电力线slve v. 解决mystery n. 谜（无法接受地, 解释不了的）snatch v. 抓住spark n. 电火花
1.★ht adj. 带电的, 充电的ht adj. 热的；新鲜的；棘手的；带电的, 充电的ht-ht-ht 麻辣烫；ht-wings 辣鸡翅；ht dg 热狗ht-tempered 火暴(脾气)的 （temper n. 脾气）ht line 热线；ht tpic 热门话题It sells like a ht cake/cakes. 表示一个东西的畅销, 热销
best seller 畅销的东西ht ptat 棘手的问题ht news 最热点的新闻2.★fireman n. 消防队员hydrant n. [ˈhaɪdrənt]消防栓, 消防龙头fire extinguisher [ɪkˈstɪŋgwɪʃə] 灭火器 （extinguisher n. 熄灭者, 灭火器）extinguish＝put ut 灭火
★cause v.& n. 引起；原因 ① v. 引起cause sth. 引起麻烦Carelessness causes accidents. 粗心导致事故Pride causes failure. 骄傲使人失败 cause sb. t d sth. 引起某人做某事, 导致某人做某事Illness caused him t lse his temper. (lse ne’s temper 发火)
② n. 原因，强调事情发生的直接原因(一个)because 因为 reasn 理由，其他各种的理由(很多个)★examine v. 检查examine the silcheck v. 核实, 核对
★accidentally adv. 意外地, 偶然地 (但更趋向于 “偶然” 的意思)accident－>accidental－>accidentallyaccident n. 事故unexpectedly adv. 出乎意料地(更趋向于 “意外” 的意思)★remains n. 尸体, 残骸remains指dead bdy
★slve v. 解决slve the mysteryslve the prblem★snatch v. 抓住catch v. 抓，如抓鱼hld v. 握着snatch v. (突然抓起来)强调动作的突然性seize v. 抓住(用力)seize my arm
★ 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 t the bicycle with a piece f wire.telephne wires 电话线Electric wires 电线wireless adj. 无线的 wireless telegraphy 无线电报★vlt n. 伏特vltage n. 电压,伏特数
★ pwer1）电力，动力 electric pwer 电力water pwer 水力2）力,能力 （自然的体力、智力）His pwer is failing.他的体力在衰退。3）权力,支配力,势力 plitical pwer 政治权力nt within ne’s pwer= beynd ne’s pwer 力所不能及我无法理解计算机是如何工作的。It is beynd my pwer t understand hw the cmputer wrks.
【课文讲解】1、Ht snakeht snake 触电的蛇get an electric shck 触电2、At last firemen have put ut a big frest fire in Califrnia.at last 最后，终于put ut a fire 扑灭火（put ut扑灭，熄灭，关掉） Please put the light/fire ut.a fire 一场(堆)火
3、Since then, they have been trying t find ut hw the fire began.since then 从那时起，到现在为止find ut （经过研究、努力等）找出，发现，查出……（这里find ut的宾语是个从句） I’ll try and find ut the name f the persn wh saved my life yesterday.
4、Frest fires are ften caused by brken glass r by cigarette ends which peple carelessly thrw away.brken glass 被打碎的玻璃片cigarette ends 烟头5、They were als quite sure that a cigarette end did nt start the fire.be able t 能够 ；be nt able t 没有能够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(＝cmpletely)－>rather－>fairly 程度一个比一个轻quite a few 颇有几个(相当多的)start a fire＝cause a fire （start vt. 使……发生，引起）
6、This mrning, hwever, a firemen accidentally discvered the cause.accidentally =by chance 偶然地discver本身含有偶然发现（某个已经存在的东西）的含义 I dn’t knw wh discvered America.7、He nticed the remains f a snake which was wund rund the electric wires f a 16,000-vlt pwer line.ntice 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：
The villagers were surprised t see the remains f an aerplane near the lake.16,000-vlt pwer line 连字符“-” 一旦加在两个词之间, 这个词之间就失去了加复数的资格, 能够加连字符的概念一定是做定语
★wind vt. 缠绕，卷在……上；盘旋，蜿蜒① vt. 缠绕，卷在……上（常与arund/rund连用）Did yu wind this piece f wire rund the tree?② vt. 蜿蜒，盘旋wind ne's way 蜿蜒而行 8、In this way, he was able t slve the mystery.in this way 就这样
9、A bird had snatched up the snake frm the grund and then drpped it n t the wires.had dne 先发生的事drp 无意掉下去的10、When it did s, it sent sparks dwn t the grund and these immediately started a fire.d s 这么做I refuse t d s. 我拒绝这么做s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 I think/believe s.
Cmprehensin questins1 Where was there a big frest fire? In Califrnia. 2 Have firemen put it ut? Yes, they have. 3 What have they been trying t find ut since then? Hw the fire began. 4 What are frest fires ften caused by? Brken glass r cigarette ends.
5 Peple are careless, aren't they? Yes, they are. 6 When did the firemen examine the grund? Yesterday. 7 Did they find any brken glass? N, they didn't. 8 Did they think a cigarette end started the fire? N, theydidn't.
9 They were quite sure it didn't, weren't they?(Yes, they were. )10 When was the cause discvered? (This mrning. )11 Wh discvered it? (A fireman did. )12 Was it what he was lking fr? (N, it wasn't. )
13 What did he ntice? The remains f a snake which was wund rund the electric wires f a 16, 000-vlt pwer line.
【Special Difficulties】 Thrw t，Thrw at and Thrw awaythrw作及物动词主要含义为“投，掷，抛，扔”。thrw t (sb.) 扔给（某人） He threw the ball t me and I caught it.thrw at 对准某一目标扔 The by threw a stne at the windw and brke it.thrw away 扔掉，丢弃 Many peple thrw away cigarette ends carelessly.
Cause and Reasncause ① n. 原因，起因； D yu knw the cause f the war?What was the cause f the delay?② v. 使……产生/发生，引起cause sth. 导致, 引起What caused the accident?cause sb. t d sth. 导致某人做某事
reasn ① n. 理由，原因Give me yur reasns fr ging there.What was the reasn fr the delay?作“原因”讲时，reasn与cause可以互换，但reasn与介词fr连用；而cause则与介词f连用。reasn后面通常跟why引导的从句： That was the reasn why the meeting was put ff.② v. 推理，劝导，说服reasn with sb. 劝说(以道理) Hw can yu reasn with him when he is s wrried?
Drp and Falldrp 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 drpped frm it. The waiter drpped a frk.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, I’ll cme back.
Key t KS ExercisesAWhat happened：began(1. 2); examined(1. 4);were nt able tfind(1. 5); did nt start(1. 6); discvered (1. 7); nticed(1.8);was wund(1. 8); was able t s lve(1. 9);drpped(1. 10); wund(1.11);it did s(1. 11); sent(1. 11);started (1. 11)What has happened：have put ut(1. 1)What has been happening：have been trying t find(1. 2)
CJack lked at his watch fr the twentieth time. Suddenly Jill arrived. ‘I've been waiting fr ver an hur, ’he said angrily. ‘Yu never cme n time. ’ ‘Oh, is that s?’Jill answered. ‘Were yu here at 2. 30?’ Jack went red. ‘Well, ’he said, ‘I gt here five minutes late myself, but yu weren't here. ’ ‘I came here at exactly 2. 30, ’Jill said, ‘and I waited fr five minutes, but yu didn't cme. ’‘What have yu been ding since then? ’Jack asked. ‘I've just been t the hairdresser's，’Jill answered brightly.
c 根据课文第二行… they have been trying t find ut hw the fire began 可以判断出只有c. wanted t find ut 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 frm the grund and then drpped it n t the wires… When it I did s, it sent sparks dwn t the grund and these immediately started a fire 可以判断只有d. a snake which had been drpped n t 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ften, 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Brken glass 是单数，所以c.最符合语法，所以选c.
5. c a. almst certain(几乎肯定)， b. fairly certain(相当肯定)，c. cmpletely 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 slving it (成功解决了它)同前一句中的 was able t slve 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. n是对的,因为它后面的词是the grund,表示在地面上,只能用介词n.其他3个选择都不符合题目意思.The snake had been n the grund.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. cntrlled it (控制了它)；b. checked it (制止了它); c. extinguished it (扑灭了它)；d. turned it ff (关掉，关上它)，只有c. extinguished it 与前面一句中的 put ut the fire (把火扑灭) 意义相同，所以选c.
9. d 只有d. this mrning 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. frtunately (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. That's s 就是如此 b. like this 像这样 d. s 因此, 这3个选择都不符合题目意思. 只有c. That's hw(那就是的方法)同In this way 的含义相符合,因为hw 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.