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1、 Lesson 53 Hot snakequite sure that a cigarette end did not start the fire. This morning, however,【New words and expression】s 生词和短语hot 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volt n. 伏特（电压单位）power line 电力线a firemen accidentally dis
2、covered the cause. He noticed the remains of asnake which was wound round the electric wires of a 16,000-volt powerline. In this way, he was able to solve the mystery. The explanation wassimple but very unusual. A bird had snatched up the snake from theground and then dropped it on to the wires. The
3、 snake then wound itselfround the wires. When it did so, it sent sparks down to the ground andthese immediately started a fire.【课文讲解】1、Hot snakehot snake 触电的蛇get a electric shock触电solve v. 解决mystery n. 谜（无法接受地, 解释不了的）snatch v. 抓住2、At last firemen have put out a big forest fire in California.at last
4、最后，终于spark n. 电火花put out a fire 扑灭火（put out 扑灭，熄灭，关掉）Please put the light/fire out.a fire 一场(堆)火hot adj. 带电的, 充电的hot 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hot cake 热蛋糕It sells like a hot cake/cakes.表示一个东西的畅销, 热销bes
5、t seller 畅销的东西3、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（这里findout的宾语是个从句）Ill try and find out the name of the person who saved my life yesterday.hot potato 棘手的问题hot news 最热点的新闻4、Forest fires are often caused by broken glass or
6、 by cigarette endswhich people carelessly throw away.broken glass 被打碎的玻璃片fireman n. 消防队员hydrant n. 消防栓, 消防龙头fire extinguisher灭火器（extinguisher n. 熄灭者, 灭火器）extinguishput out 灭火cigarette ends 烟头5、They were also quite sure that a cigarette end did not start the fire.be able to 能够；be not able to 没有能够be s
7、ure that 对很有把握；quite sure 相当的把握性rather adv. 相当cause v.& n. 引起；原因v. 引起cause sth. 引起麻烦fairly adv. 相当, 公正地, 诚实地Carelessness causes accidents.粗心导致事故Pride causes failure.骄傲使人失败cause sb. to do sth.引起某人做某事, 导致某人做某事Illness caused him to lose his temper. (lose o nes temper 发火) n. 原因，强调事情发生的直接原因(一个)because 因为
8、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）6、This morning, however, a firemen accidentally discovered the cause.accidentally =by chance偶然地discover 本身含有偶然发现（某个已经存在的东西）的含义I dont know who discovered America.reason 理由，其他各种的理由(很多个)examine v. 检查ex
9、amine the soilcheck v. 核 实, 核对7、He noticed the remains of a snake which was wound round theelectric wires of a 16,000-volt power line.notice 注意别人没注意的东西accidentally adv.意外地, 偶然地 (但更趋向于“偶 然” 的意思)accidentaccidentalaccidentallyaccident n. 事故the remains表示“尸体，残骸”，必须用复数形式：The villagers were surprised to se
10、e the remains of an aeroplane near the lak16,000-volt power 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 vt. 缠绕，卷在上（常与around/round连用）Did you wind this piece of wire round the tree? vt. 蜿蜒，盘旋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 bodysolve v.
11、解决solve the mysterysolve the problemwind ones way 蜿蜒而行8、In this way, he was able to solve the mystery.in this way 就这样snatch v. 抓住catch v. 抓，如抓鱼hold 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 arm9、A bird had snatched up the snake from the ground and then droppedit on to the wires.had done
12、 先发生的事drop 无意掉下去的【Text 】10、When it did so, it sent sparks down to the ground and theseimmediately 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At last firemen have put out a big forest fire in California. Sincethen, they have been trying to find out how the fire bega
13、n. Forest firesare often caused by broken glass or by cigaretteends which peoplecarelesslythrow away. Yesterdaythe firemen examined the groundcarefully, but were not able to find any broken glass. They were also 重复I think/believe so.来的概念, 动作）I fell and hurt myself.When leaves fall in autumn,I ll com
14、e back.【Summary writing】1 Have firemen put out a big forest fire in California or not? Havethey been trying to discover its cause?(Now that .)2 Was there any evidence that it was started by broken glass or by acigarette end or not?【Multiple choice question】s6 He was able to solve the mystery. He _c_
15、.a.could if he wanted to b.could but he didnt want toc.succeeded in solving it d. didnt succeed in solving itbe able tocan, succeed in doing5 Where did the snake wind itself? What had it sent to the ground?Did this cause the fire or not?(In winding. and)1 Now that fireman have put out a big forest f
16、ire in California ,theyhave been trying to discover its cause.11 In this way he was able to solve the mystery. _c_he did it.a.Thats so b.Like this c.Thats how d. Sonow that 既然in this way= that s how 以这种方式like 在英文中不表示方式, 只表示两者的东西很象2 evidence n. 证据区分同位语从句与定语从句地区别：如果that 做了主语或者宾语, 是定语从句；如果that 既不作主语也不作
17、宾语, 是同位语从句fact , evidence 的后面往往是加同为语从句新概念英语第二册课后习题答案详解Lesson 531. c 根据课文第二行 they have been trying to find out how thefire began 可以判断出只有c. wanted to find out what had caused thefire 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。5 (In) winding itself around the wires the snake had sent sparks tothe ground and it cau
18、sed the fire.介词“in”“on”放在动词“-ing”前面的理解方式和没有“in” 2. d 根据课文第10-12行 A bird had snatched up the snake from the“on”的理解方式一样ground and then dropped it on to the wires When it I did so, it sentsparks down to the ground and these immediately started a fir可e 以判断只有d. a snake which had been dropped on to the wi
19、res 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。【Key structures】一般过去时、现在完成时与现在完成进行时一般过去时通常与一个表示确切的时间的状语连用现，在完成时则有时与表示一段时间的状语连用，有时不需要时间状语，而现在完成进行时则有时与表示一段时间的状语连用，有时与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all+表示时间的名词连用。现在完成时与一般过去时中既可以用状态动词（表示存在、拥有、感情、思想、需求等的动词）也可以用行为动词，现在完成进行时则通常与行为动词连用。进行时，只有 sin
20、ce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 cer
21、tain完( 全肯定)， d. nearly certain(几乎肯定)4 个选择中只有c.同前句中的quite sure(十分确信)意义最接近，所以选c.【Special Difficulties】Throw to，Throw at and Throw awaythrow作及物动词JV_K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
22、，丢弃Many people throw away cigarette ends carelessly.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。Cause and Reasoncausen. 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W
23、hat caused the accident?cause sb. to do sth.导致某人做某事reasonn. 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7. d 只有d. on是对的,因为它后面的词是the
24、 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 hadbeen 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. extinguishedit 扑灭了它；d. turned it off关掉，关上它，只有c. extinguished it与前一句的 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
25、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. bychance 同前一句中的accidentally (偶然地)意义相同，所以选a.11. c 前句短语In this way 用这种方法,本句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
26、In this way 的含义相符合,因为 how 相当于theway 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.reason with sb. 劝说(以道理)How can you reason with him when he is so worried?Drop and Falldrop 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