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教学主题：NCE 2 Lesson 53
教学重难点： 单词、句型、语法
教学过程：
1. 导入
2
______________ adv. 暂时地
______________ n. 英寸（度量单位）
______________ n. 空间
______________ adv. 实际上
搬进一所新房子 ________________________________________________________
辛苦地干了整整一个上午_________________________________________________
把我的新房间收拾整齐___________________________________________________
有1,000多本书_________________________________________________________
暂时把书放在了地板上___________________________________________________
书把地板的每一点空隙都占了 ____________________________________________
实际上_________________________________________________________________
踩着这些书进出房间_____________________________________________________
几分钟前_______________________________________________________________
帮我把一个旧书橱抬上了楼_______________________________________________
大吃一惊_______________________________________________________________
我见过的最漂亮的地毯___________________________________________________
盯着 “地毯” 看了一会儿_________________________________________________
空闲时_________________________________________________________________
根本不_________________________________________________________________
2. 呈现
Lesson 53 Hot snake
【New words and expressions】
______________ adj. 带电的，充电的
______________ 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
______________ n. 电线
______________ n. 伏特（电压单位）
______________ 电力线
______________ v. 解决
______________n. 谜（无法接受地, 解释不了的）
______________ v. 抓住
______________ n. 电火花
★hot adj. 带电的, 充电的
hot-tempered 火暴(脾气)的（temper n. 脾气）；hot line 热线；hot topic 热门话题
★fireman n. 消防队员
fire extinguisher 灭火器 （extinguisher n. 熄灭者, 灭火器）
extinguish＝put out 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
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 one’s temper 发火)
② n. 原因，强调事情发生的直接原因(一个)
because 因为 reason理由，其他各种的理由(很多个)
★examine v. 检查；examine the soil; examination = exam
check v. 核实, 核对
★accidentally adv. 意外地, 偶然地 (但更趋向于 “偶然” 的意思) = by chance
accident 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 body
★solve =work out v. 解决；solve the mystery/problem- solution n. 解决方案
★snatch v. 抓住（迅速地或粗鲁地）She snatched the letter from me.
catch v. 抓，如抓鱼；hold v. 握着; seize v. 抓住(用力)； /seize my arm
★electric adj. 带电的，通电的；electricity n. 电； electrical 与电有关的
【根据课文回答问题】
1. Where did the fire start _______________________________________
2. What are usual causes of forest fires ______________________________________
3. What did the fireman notice this morning __________________________________________
4. What do you think of the cause of this fire _________________________________________
【课文重点词组】
扑灭了一场森林大火_____________________________________________________
从那时起到现在_________________________________________________________
试图找出起火的原因_____________________________________________________
破碎的玻璃或香烟头_____________________________________________________
随手扔掉_______________________________________________________________
仔细查看地面___________________________________________________________
未能发现 ______________________________________________________________
偶然发现了起火的原因___________________________________________________
留意到一条死蛇的残骸___________________________________________________
电线___________________________________________________________________
就这样_________________________________________________________________
解开了谜团_____________________________________________________________
很简单，却异乎寻常_____________________________________________________
把蛇从地上抓起来_______________________________________________________
把火花送到了地面_______________________________________________________
【课文讲解】
1、Hot snake 触电的蛇；get an electric shock 触电
2、At last firemen have put out a big forest fire in California.
put out a fire 扑灭火（put out扑灭，熄灭，关掉）put on / off / away/ up
Please put the light/fire out. I forgot to put you off.
3、Since then, they have been trying to find out how the fire began. since then从那时到现在
4、Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away.
broken glass 被打碎的玻璃片；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 sure that 对……很有把握；quite sure 相当的把握性
rather adv. 相当；quite(＝completely)－>rather
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 morning, however, a firemen accidentally discovered the cause.
accidentally =by chance 偶然地； on purpose 故意
7、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：
The villagers were surprised to see the remains of an aeroplane near the lake.
16,000-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
① vt. 缠绕，卷在……上（常与around/round连用）
Did you wind this piece of wire round the tree
② vt. 蜿蜒，盘旋wind one's way 蜿蜒而行
8、In this way, he was able to solve the mystery. in this way 就这样
9、A bird had snatched up the snake from the ground and then dropped it on to the wires.
had done 先发生的事；drop 无意掉下去的
10、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，I think/believe so.
【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.
Cause and Reason
cause
① n. 原因，起因； Do you know the cause of the war
② 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
reason
① n. 理由，原因；Give me your reasons for going there.
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.
② 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
drop and Fall
drop vi.&vt. （使）掉下，（使）落下，放下（强调的是不小心掉下来）
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, I’ll come back.
1. If you throw the ball _________ (to / at) me, I’ll try to catch it.
2. Please don’t _________ (drop / fall) the vase. It’s very expensive.
3. Unluckily, he __________ (dropped / fell) from his horse and broke his left arm.
4. What was the ___________ (reason / cause) for Sally’s leaving the company quickly
5. It took the doctor three hours to find out the _________ (reason / cause) of his lung cancer.
3. 练习和检测
(一) 根据提示写出相应的英语单词
1. He went out to buy a packet of ____________(香烟).
2. He ___________ (检查) her passport and stamped it.
3. Mick ____________ (抓住)the cards from Archie's hands.
4. We set out to find the truth behind the _____________(谜).
5. When the rescue team arrived, they found some_____________(残骸)of the plane.
6. The storm ____________ (引起) landslides and flooding in Savona yesterday.
(二)用方框内所给单词或短语填空
put out, find out, throw away, snatch up, start a fire
1. In working with others, you will ___________ more about yourself.
2. I think I'll ____________ these newspapers.
3. I __________a pair of Canadian goggles(护目镜)and head for the cashier(收银员).
4. We have to clean the grill before we ____________.
5. It took them several hours to _____________ the fire.
(三)用方框内所给单词或短语填空
( ) 1. The weatherman says that it will rain on Sunday so we decide to ____ our sports meeting.
A. put up B. put on C. put off D. put up with
( ) 2. A dog _________ a car accident this afternoon.
A. led B. caused C. made D. got
( ) 3. He threw _________ all the bottles yesterday as they were out of use.
A. away B. out C. off D. in
( ) 4. We all believe that our manager is able to _________ this difficult problem.
A. make B. work C. save D. solve
( ) 5. Never touch an electric _________ because it is dangerous.
A. strap B. belt C. wire D. tie
( ) 6. To be honest, I am not _________ whether our team will win the game.
A. certain B. known C. sure D. clear
( ) 7. I am afraid _________ I will get a stage fright when I give a speech.
A. how B. that C. what D. whether
4. 作业
I. 完成讲义上剩余题目；背诵课文
II. 根据首字母或者中文填空用适当的形式填空
1. With the help of the teacher, we finally s___________ the problem.
2. The divers found the r_________ of the ancient ship.
3. He ripped out the telephone w__________.
4. I a__________ broke the window.
5. Why he went there is a m__________ to me.
6. The child's headache may be c__________ by stress.
7. S___________ rained down from the burning roof.
8. A well-trained f__________ can get over this tall wall easily.
9. The doctor e__________ her carefully.
10. ________________, you can make progress in English.(就这样)
11. The fire was soon _____________(扑灭).
12. The _______________ of this city is very complex(复杂).(电力线)
13. He finished his paper ______________ (终于).
14. The hawk(鹰) ________________ the snake and flew away.(抓起)
15. The floor of the car was covered in ________________.(烟头)
III. 选择题
( )1.-Can you find our city________ a lot in recent years
-Yes. The road is wider and the buildings are taller.
A. has changed B. changes C. changed D. will change
( )2. Recycling is good, so don't ______bottles or newspapers.
A. find out B. hand in C. use up D. throw away
( )3. It is sure that the truth will be _____ at last.
A. covered B. discovered C. discovering D. found
( )4. Please come to the teachers' office _______.
A. accidentally B. carelessly C. carefully D. immediately
( )5. A girl miraculously survived an _______ electric shock.
A.18,000 volt B.18,000 volts C.18,000-volt D.18,000-volts
IV. 选词填空:
drop, fall, quiet, quite, reasoned, reason, at, away, to, cause, caused
1. The ___________ for this is that there is something wrong with the plane.
2. I_____________ with her for hours about the dangers, but she will not change her mind.
3. His absence _______________ me much trouble.
4. What was the ________________ of the accident
5. This is a _______________ comfortable house.
6. I told them to be _____________ and go to sleep.
7. The boy has again ______________ from his horse.
8. Nancy ______________the noodles into the water.
9. Throw the ball ______________ your sister.
10. Stop throwing stones ________________ that dog!
11. We throw _______________ too much rubbish.
V. 适当形式填空
The firemen _______________ the ground very carefully. (exam)
Forest fires are often caused by __________ glass or cigarette ends. (break)
I want you to give me a reasonable _________________.(explain)
The scientist _______________ discovered a new element. (accident)
She is so _____________ that this letter is full of mistakes. (care)
They’ve been trying to offer a _____________ so that the situation won’t get worse. (solve)
A bird _____________ (snatch) up the snake and _____________(drop) it on to the wires.
Nowadays, _______________ cars are becoming more and more popular. (electricity)
Electricians can deal with(处理) all kinds of _______________ problems. (electricity)
-Are you hungry now -No, I ___________________(have) some food.
We _________________ (wait) anxiously for him these days.
They _________________(try) to find out how the fire began since then, but they still have no idea.
VI. 句型转换
They could not find out the real cause of the accident. (句意不变)
They ________ ________ ________ find out the real cause of the accident.
People may cause forest fires if they start campfires. (被动语态)
Forest fires may ________ ________ if people start campfires.
He was able to solve the mystery. (句意不变)
He was able ________ ________ ________ the mystery.Lesson 53 Hot snake
单词讲解
课文语法讲解：一般过去时/现在完成时/现在完成进行时
知识拓展：易混淆词
一．单词讲解
1. cause
v. 引起 Carelessness causes accidents.
n. 起因 the cause of the fire
2. examine v. 检查
examiner n. 主考官
examination n. 检查，考试 (exam)
3. accidentally adv. 意外地，偶然地
do sth. accidentally
= do sth. by accident
= do sth. by chance 偶然地做某事
accidentally adv. 意外地，偶然地
accidental adj. 意外的
accident n. 事故，意外
5. remains n. 尸体，残骸 （本义：剩余留下来的东西）
the remains of a snake 蛇的尸体
remain v. 保持，保留
remain silent 保持安静
6. wire n. 电线
wireless adj. 无线的
wireless network / mouse / keyboard
无线网络/无线鼠标/无线键盘
7. solve v. 解决
solve the mystery 解决这个谜题
solve the problem 解决问题
solve the problem of … 解决...的问题
solve the problem of air pollution / earthquake
二．课文语法讲解：一般过去时/现在完成时/现在完成进行时
1. 一般过去时 did （完全发生在过去，有过去的时间或过去的动作）
现在完成时 have/has done （完全发生在过去，站在现在的角度；或者从过去发生到现在）
现在完成进行时 have/has been doing （和现在完成时的用法一样，若强调过程 用现在完成进行时；若强调结果 用现在完成时）
练习：
1.At last firemen have put out a big forest fire in California. 现在完成时 （强调结果）
Since then, they have been trying to find out how the fire began. 现在完成进行时 （强调过程）
Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away.
forest fires 森林大火
cigarette ends 烟头
都是名词修饰名词， 变复数 通常 后变前不变。
...which people carelessly throw away. 定语从句
Yesterday the firemen examined the ground carefully, but were not able to find any broken glass.
Be able to do 能够做某事
They were also quite sure that a cigarette end did not start the fire.
Be sure that.... 宾语从句
This morning, however, a fireman accidentally discovered the cause.
6. He noticed the remains of a snake which was wound round the electric wires of a 16,000-volt power line.
1）wind /waind/ v. 弯曲，围绕 （过去式/过去分词：wound wound）
/wind/ n. 风
wind round … 围绕...
In this way, he was able to solve the mystery.
解开这个谜
8. The explanation was simple but very unusual.
explanation n. 解释
explain v. 解释
A bird had snatched up the snake from the ground and then dropped it on to the wires.
snatch up 抓起来
时态先是现在完成，然后一般现在
on to =onto
on 表静态，一直在...上面
onto 表动态，原本不在上面，后来到上面
10. The snake then wound itself round the wires.
11. When it did so, it sent sparks down to the ground and these immediately started a fire.
so pron. 如此，这样
I think so.
I guess so.
I believe so.
三．知识拓展：易混淆词(共43张PPT)
Lesson 53
Hot Snake
触电的蛇
触电
get a electric shock
★hot adj. 热的；
新鲜的；
棘手的；
带电的, 充电的
at last 最后，终于
★ fireman
n. 消防队员
put out 扑灭，熄灭，关掉
请把火熄掉。
Please put the fire out
★ forest n.森林
消防队员们终于扑灭了加利福尼亚的一场森林大火。(时态发生在过去，强调对现在的影响）
1、At last firemen have put out a big forest fire in California.
forest虽然是名词，但在句中起形容词的作用，修饰fire。
since then
从那时起，到现在为止
find out
表示经过研究、努力等“找出”、“查出”： I'll try and find out the name of the person who saved my life yesterday.
我将设法查出昨天救我命的那个人的姓名。
（这里find out的宾语是个从句）
从句，火怎样开始的
how the fire began.
从那时起，他们一直试图找出起火的原因。
2、Since then, they have been trying to find out how the fire began.
★ cause v.& n. 引起；原因
① v. 引起
cause sth. 引起麻烦
Pride causes failure. 骄傲使人失败
cause sb. to do sth. 导致某人做某事
cause by sth 由某事引起
② n. 原因，强调事情发生的直接原因(一个)
broken glass
被打碎的玻璃片
cigarette ends
烟头
Throw to,Throw at ,Throw away
throw
“投,掷，抛，扔”
throw away 扔掉，丢弃
Many people throw away cigarette ends carelessly.
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.
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
3、Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away.
★examine v. 检查
examine the ground
昨天，消防队员仔细查看了地面，
4、Yesterday the firemen examined the ground carefully ，
但未能发现碎玻璃。
5、but were not able to find any borken glass .
be able to 能够 ；
sure 有把握；确定
be sure that 对……很有把握；
quite sure 相当的把握性
quite－>rather－>fairly
（程度一个比一个轻）
start a fire＝cause a fire （start vt. 使……发生，引起）
他们还十分肯定火灾也不是由烟头引起的。
6、They were also quite sure that a cigarette end did not start the fire.
accidentally 偶然地
=by accident
=by chance
discover 本身含有偶然发现（某个已经存在的东西）的含义
我不知道谁发现美洲的。
I don’t know who discovered America.
然而今天上午，一个消防队员偶然发现了起火的原因。。
7、This morning, however, a firemen accidentally discovered the cause.
notice 注意别人没注意的东西
remain
A few pears remain on the trees. 树上尚留有几颗梨子。
剩下,余留
This room remains cool all summer.
这个房间整个夏天保持凉爽。
保持,仍是
the remains n. 尸体, 残骸
表示“尸体，残骸”时，必须用复数形式.
他发现了一条死蛇
8、He noticed the remains of a snake
★wind vt. 缠绕，卷在……上；
盘旋，蜿蜒
① vt. 缠绕，卷在……上（常与around/round连用）
Did you wind this piece of wire round the tree
② vt. 蜿蜒，盘旋
wind one's way 蜿蜒而行
（2）wound为wind的过去分词。
wind在这里表示“卷在……上”,“缠绕”，与around／round连用.
wire指具体的电线、铁丝等，line在这里指“线路”，含义比wire广。
是你把这根铁丝缠在树上的吗？
Did you wind this piece of wire round the tree 　　
16,000-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
缠绕在16,000伏高压线上的
9、which was wound round the electric wires of a 16,000-volt power line.
in this way 就这样
solve v. 解决
solve the problem
mystery n.
1. 神秘的事物;难以理解的事物;谜
2. 神秘,秘密
就这样，他解开了起火之谜
10、In this way, he was able to solve the mystery.
explanation
1、说明,解释
It needs no explanation. 这无需解释。
2. 辩解;辩明
What did he say in explanation of his lateness 他用什么话来为自己迟到辩白
3. (为消除误会等的)交谈,互相讲明
I've come to an explanation with him. 我与他和解了。
解释很简单，却异乎寻常。
11 、 The explanation was simple but very unusual.
snatch
v. (突然抓起来)强调动作的突然性
一只鸟把蛇从地上抓起来，然后把它扔到了电线上
12、A bird had snatched up the snake from the ground and then dropped it on to the wires.
had done 先发生的事
drop 无意掉下去的
Drop and Fall
drop vi.&vt. （使）掉下，（使）落下，放下（强调的是不小心或凑巧掉下来）
当他走过那棵树时，一个苹果从树上掉了下来。 As he walked past the tree, an apple dropped from it.
那侍者掉了一把叉子。
The waiter dropped a fork.
fall vi. 落下，（强调的是掉下来的概念）
（雨、雪等自然现象）下降,跌倒，摔倒 　
我摔倒了并受了伤。
I fell and hurt myself.
请拿住这花瓶，别让它倒了。
Please hold the vase and don't let it fall.
　秋天叶落时，我就会回来。
When leaves fall in autumn, I’ll come back.
于是蛇就缠住了几根电线。
The snake then wound itself round the wires.
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。
14、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
I think/believe so.
reason
① n. 理由，原因
Give me your reasons for going there.
reason后面通常跟why引导的从句：
That was the reason why the meeting was put off.
② 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
Cause and Reason
cause
① n. 原因，起因；
Do you know the cause of the war
What was the cause of the delay
② 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
See you next time!(共3张PPT)
●Unit61
The man in a hat
3
but forgot take
ago
②who served
dictionanes
￥：100000
who
expensive
V,各。题，i
12
Yes
put it on
please
standing
sir
bought
counter
hat
3
All right
口OA
The books
华单单单带华果华甲一
0 宽
you
10
books
34
14
on the
which
buy
Which
hat
counter
this
served
wearing
the
man
6
who
serve
gentleman
I he man
9
ago
Caroline
remember
-8
the man
these
books
7
8
can't
says
he's
who bought
肠
16
now
recognize
Yes
●Unit61
The man in a hat
3
but forgot take
ago
②who served
lady
dictionanes
￥：100000
who
expensive
V,各。题，i
12
Yes
put it on
please
sir
bought
standing
counter
hat
13
All right
O△
The books
华单单单带果华甲一
0 宽
books
34
you
10
14
on the
which
buy
Which
counter
this
the
man
6
serve
gentleman
ago
Caroline
-8
the man
these
20X
books
7
8
says
he's
who bought
肠
16
●Unit61
The man in a hat
,之慧2.8,？
3
￥：100000
V,各、。是，？
11
10
OA
4
6
9
君-8
(0
8
肠
4
16
涂
3/
Since then
气》9
find out
began
find
broken glass
trying to
Hot snake
C alifornia
but
forest fire
8
ground
sure
caused
a cigarette end
forest fire
2
broken glass
put out
examined
*
start
cigarette ends
12348
67↑
10
fremen
7
Yesterday
11
throwaway
12
Thism orning
13
discovered
however
remains of a snake noticed
accidentally
snake
wound round
then
19
14electric wires
snatched up
18/
bird
dropped
20
16,000-volt
unusual
snake
wound
power line
6
simple
21
15
When
7
explanation
In this way
16
able to
solve
m ystery
sent sparks
started a fire
imm ediately

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