新概念英语第二册课件Lesson53（共29页）

这是一份新概念英语第二册课件Lesson53（共29页），共29页。
Key pints in L53
Ⅰ.Key wrds:ht fireman cause examine accidentally …Ⅱ.Key structure: 一般过去时 现在完成时 现在完成进行时…
We have just mved int ________and I have been wrking hard_______. I have been trying t get my new rm______. This has nt been easy because I ___ver a thusand bks. _____________, the rm is _____small, s I have temprarily put my bks________. They cver every inch f flr _____. A shrt while ag, my sister helped me t carry ne f my ld bkcases________. She gt a big ______ when she went int my rm. 'This is the ______ carpet I have ever seen,' she said.
Review –L52 A pretty carpet
T make matters wrse
up the stairs
Can yu remember what snake charmers d?Stry in L42 Nt very musical They play tunes and snakes fllw mvements f the tunes.
ht adj. 带电的，充电的 fireman n. 消防队员cause v. 引起； n. 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snatch v. 抓住 spark n. 电火花
Key wrds and expressins
★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 It sells like a ht cake/cakes. 表示一个东西的畅销, 热销ht ptat 棘手的问题ht news 最热点的新闻
★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）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 (更趋向于 “偶然” )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snatch v. (突然抓起来)强调动作的突然catch v. 抓，如抓鱼hld v. 握着seize v. 抓住(用力) seize my arm
Listen t the stry.
What caused the fire?
A bird drpped a snake n t the wires. The snake wund itself rund the wires and it sent sparks dwn t the grund.
Enjy the stry and answer the Qs:
Where did the fire take place?What have the firemen been trying t d?What did the fireman ntice?
In Califrnia.
They have been trying t find ut hw the fire began .
He nticed the remains f a snake.
At last firemen have put ut a big frest fire in Califrnia. Since then, they have been trying t find ut hw the fire began. Frest fires are ften caused by brken glass r by cigarette ends which peple carelessly thrw away. Yesterday the firemen examined the grund carefully, but were nt able t find any brken glass. They were als quite sure that a cigarette end did nt start the fire. This mrning, hwever, a firemen accidentally discvered the cause.
He nticed the remains f a snake which was wund rund the electric wires f a 16,000-vlt pwer line. In this way, he was able t slve the mystery. The explanatin was simple but very unusual. A bird had snatched up the snake frm the grund and then drpped it n t the wires. The snake then wund itself rund the wires. When it did s, it sent sparks dwn t the grund and these immediately started a fire.
1、Ht snakeht snake 触电的蛇get a 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Please put the light/fire ut.a fire 一场(堆)火
Language pints
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 找出，发现（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 …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 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”，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 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.
Summary writing
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?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）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.
Exercise D exercise n Ss’ bks.