新概念二Lesson53知识点整理
Lesson 53 Hot Snake 触电的蛇
学习目标全解必记单词
hot adj. 带电的，通电的
第二次相遇fireman n. 消防队员
cau 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
solve v. 解决
mystery n. 谜
snatch v. 抓住
spark n. 电火花
常考短语
at last 最后，终于
put out 扑灭，熄灭，关掉
since then 从那时起，到现在为止
find out 找出，发现，查出……
throw away 扔掉，丢弃
be sure that 对……很有把握
start a fire 引起一场大火
in this way 就这样
snatch up 从......抓起来
cigarette ends 烟头
broken glass 碎玻璃
经典句型
1.At last firemen have put out a big forest fire in California.
2.Since then, they have been trying to find out how the fire
北寺塔began.
3.Forest fires are often caud by broken glass or by cigarette
ends which people carelessly throw away.
4.They were also quite sure that a cigarette end did not start
the fire.
5.This morning, however, a firemen accidentally discovered
the cau.
6.He noticed the remains of a snake which was wound round
the electric wires of a 16,000-volt power line.
7.In this way, he was able to solve the mystery.
8.The snake then wound itlf round the wires.
重点语法
1. 复习现在完成进行时的用法：
(1)定义：是从过去某一时刻开始的动作，一直持续到现在，
也许还将持续下去，也许马上就要结束。既有“完成”的
概念，又有“进行”的概念。
(2)构成：have/has been +现在分词
重点语法(3)用法详见lesson52
2. 原因状语从句：
引导原因状语从句的词或词组有：becau(因为), since(既然)，as(由于)，now that(既然)等。
例如：
As water vapour is extremely light, it often ris high in the sky. 由于水蒸气极轻，故常常升入高空。
But since the teacher said so it must be true.
既然老师那样说了，那么它肯定是真的。
(1)原因状语从句主要由becau, as, since引导
例句：
He was angry becau we were late.
他很生气，因为我们迟到了。
As the soup was very salty, we were thirsty afterwards.
由于汤太咸，我们后来都很口渴。
Since you are going, I will go.
既然你要去，我也去。
(2)还有一些原因状语从句不带连词（eing, considering起连词作用）
例句：
Seeing that it is ten o’clock, we shall not wait for her any longer.由于现在已经十点钟，我们就不在等她了。Considering he’s only been learning English a year, he speaks it very well.考虑到他学英语才一年，他讲的算是很好地了。
(3)另外，有些be +形容词结构后的从句也说明原因
例句：
I’m glad that you’ve been assigned a new job.
我很高兴你分配了工作。
She was annoyed that he had broken her va.
她生气了，因为他把她的花瓶打破了。
教材全解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 最后，终于，过程很艰难
大惑不解
=finally=eventually
At last they climbed over the mountain．
他们终于翻过了这座大山。
put out 扑灭，熄灭，关掉
Plea put the light out.
请把灯关掉。
教材全解Firemen tried to free the injured and put out the blaze.
消防队员努力救出伤者并扑灭大火。
扩展：
extinguish＝put out 灭火
推辞的近义词fire extinguisher 灭火器
make a fire 生火
start a fire 引起火灾
2.Since then, they have been trying to find out how the fire began. 自那时起，我们一直试图找出起火原因。since then
从那时起，到现在为止
玄幻小说排行
Your life since then must have emed very ordinary.
你的生活从那时起一定非常平淡无奇。
Since then, the authorities have tried to clean up the sport.
从那以后，有关当局已努力整顿体育界。
find out
（经过研究、努力等）找出，发现，查出……
I’ll try and find out the name of the person who saved my life yesterday.
我会试着查出昨天救了我的人的名字。
3. Forest fires are often caud 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。
父亲的英语
扩展：
throw away 扔掉，丢弃
I advi you to throw away your makeup.
我建议你扔掉化妆品。
throw about 随处扔
Don't throw waste paper about in the park.
不要在公园里乱扔废纸。
throw at 扔向（有目标性）
The boy threw a stone at the window and broke it.
男孩向窗户扔了一块石头把玻璃打碎了。
throw to 扔向（无目标性）
He threw the ball to me and I caught it.
他把球扔给我，我接住了。
cau v./n.
(1) v. 引起
党员的先锋模范作用cau sth 引起（麻烦）
Carelessness caus accidents.最好看的电视
粗心导致事故。
Pride caus failure.
骄傲使人失败。
cau sb to do sth 引起某人做某事，导致某人做某事(2)n. 原因
Smoking is the biggest cau of death and dia.
在引发死亡和疾病的因素当中，吸烟是最大的原因。
扩展：
reason n./v.
(1) n. 理由，原因
Give me your reasons for going there.
给我你去那儿的原因。
