新概念英语第二册第53课LESSON 53 Hot snake (共47张PPT)

(共47张PPT)
LESSON 53
Hot snake
Natural disasters are happening with increasing
frequency.
['n t r l]
[d 'z st s ]
sandstorm ['s nd,st rm] 沙尘暴
volcano[vɑl'keno] 火山
Typhoon[ tai'fu:n ] 台风
drought[draut] 旱灾
Earthquak [ :θkweik] 地震
Fire [ 'fai ] 火灾
Fire [ 'fai ]
Earthquak
[ :θkweik]
Drought
[draut]
Tsunami
[tsu'nɑmi]
Volcano
[vɑl'keno]
sandstorm
['s nd,st rm]
Have you ever experienced any natural disasters
Which one is more frequent.
A big fire !!! Tell me some words about fire
or associations with a fire!!!
fire
smoke
destory
fireman
remains
cry
dead
Cause of the fire!
Some words about another fire
hot
[hɑt]
[k z]
[ g'z m n]
['fa rm n]
[, ks 'd ntl ]
[r 'menz]
[sɑlv]
['m st r ]
[spɑrk]
fire/man
cause
exa/mine
ac/ci/den/ta/lly
re/mains
mystery
spark
sol/ve
n .消防队员
v; n. 引起; 原因
v .检查
adv. 意外地, 偶然地
n. 尸体, 残骸
v .解决
n .谜
n .火花
adj. 带电的, 充电的
What’s missing
hot
[hɑt]
[k z]

['fa rm n]
[, ks 'd ntl ]
[r 'menz]
[sɑlv]
[spɑrk]
fireman
cause
accidentally
remains
spark
solve
n .消防队员
v; n. 引起; 原因
v .检查
adv. 意外地, 偶然地
n. 尸体, 残骸
v .解决
n .谜
n .火花
adj. 带电的, 充电的
hot-wings 辣鸡翅；
hot-hot-hot 麻辣烫；
★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
hot dog 热狗
hot-tempered 火暴(脾气)的
hot line 热线
hot topic 热门话题
hot cake 热蛋糕
★fireman=firefighter
n 消防队员
hydrant [`haidr nt]
n.消防栓
fire extinguisher
灭火器
Extinguish [ik`sti gwi ]
＝put out
灭火
★fireman
n 消防队员
hydrant [`haidr nt]
n.消防栓
★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)
be caused by…
某事由…引起
carelessness
★ 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 / accidentally.
★ remains
1）n. 剩余物,残余物
残汤剩饭
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.
木已成舟
What’s done is 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
Electric 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 one’s power= beyond one’s 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
snatch
1）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.
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 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
单词学习
hot
fireman
cause
examine
accidentally
remains
wind
wire
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
Comprehension questions
1 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 by
Broken glass or cigarette ends.
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，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。
I’ll 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 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
Throw away 扔掉，丢弃
Throw about 随处扔
Throw at 扔向（有目标性）
Throw to 扔向（无目标性
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 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 can't have gone far.
有一点是肯定的，他不可能走得很远。
She is sure to pass the examination.
她一定会通过考试。
start a fire＝cause 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 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。
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“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around／round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 e.g. solve the problem 解决问题
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 down 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 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
Key to Summary writing
Now that firemen have put out a big forest fire in California,they have been trying to discover its cause. There was no evidence
that 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 the wires, the snake had sent sparks to the ground and this caused the fire.
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
What shall we do if a fire happens
Discussion
Do or not to do
4. Take the left.
乘电梯逃离。
5. Jump out of the tall building.跳楼
.
1.Use wet quilt or cloth to block the door.用湿的被褥或衣服堵住门。
2.To make a quick departure， run away.当机立断，迅速逃离。
3.Call 114.
6.putting it out with a fire-extinguisher用灭火器灭火。
7.Find some extra way to get themselves out in free time.
多掌握几条逃生路线。