新概念英语第二册Lesson+53+A+hot+snake(课文、详解、练习)讲义.docx
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1、新概念英语第二册 Lesson 53Hot snake触 电的蛇At last firemen have put out a big forest fire in California. Since then, they have been trying to find out how the fire began. Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away. Yesterday the firemen examined the gr
2、ound carefully, but were not able to find any broken glass. They were also quite sure that a cigarette end did not start the fire. This morning, however, a firemen accidentally discovered the cause. He noticed the remains of a snake which was wound round the electric wires of a 16,000-volt power lin
3、e. In this way, he was able to solve the mystery. The explanation was simple but very unusual. A bird had snatched up the snake from the ground and then dropped it on to the wires. The snake then wound itself round the wires. When it did so, it sent sparks down to the ground and these immediately st
4、arted a fire.【课文翻译】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。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。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
5、玻璃或人们随手扔掉的香烟头引起。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。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。This morning, however, a firemen accidentally discovered the cause.然而今天上午,一
6、个消防队员偶然发现了起火的原因。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。In this way, he was able to solve the mystery.就这样,他解开了起火之谜。The explanation was simple but very unusual.解释很简单,却异乎寻常。A bird had snatched up the snake from the
7、 ground and then dropped it on to the wires.前一句的短语In this way是“用这种方法”,本句需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In this way的含义相符合,因为how相当于the way in which,所以选 c.12.ca. 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sna
8、tched(抓住)意义相同,所以选c.一只鸟把蛇从地上抓起来,然后把它扔到了电线上。The snake then wound itself round the wires.于是蛇就缠住了几根电线。When it did so, it sent sparks down to the ground and these immediately started a fire. 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。New Word and expressions 生词和短语hot aoy.带电的,充电的fireman。.消防队员cause c引起;g原因examine v.检查a
9、ccidentally adv.意外地,偶然地remains。.尸体,残骸wire ”电线volt .伏特(电压单位)power line电力线solve iz.解决mystery n.谜snatch忆抓住spark ,电火花详解语法 Grammar in use1 . 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。(1) at last (终于,到底)表示经过一番努力之后。(2) put out可以表示“扑灭”、“熄灭,“关掉”等含义:Please put the li
10、ght/ fire out.请把灯关掉/把火灭掉。(3) forest虽然是名词,但在句中起形容词的作用,修饰fire。2 . .they have been trying to find out how the fire began他们一直试图找出起火的原因。(1)短语动词find out表示经过研究、努力等“发现”、“找出”、“查出”:Fil 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。2 2) how the fire began是find out的宾语,它是
11、一个由疑问词how引导的名词 从句。3 . 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。(1) start作及物动词时可以表示“使发生”、引起”。(2)be sure后面跟的是名词从句。that引导的这个名词从句也可以写成that the fire was not started by a cigarette endo但这里强调的是引起火灾的原因(不是碎玻 璃或烟头),所以用烟头作主语。4 . .a fireman accidentally discovere
12、d the cause一个消防队员偶然发现了起火的原因。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.我不知道谁发现美洲的。在discover前面加上accidentally更加强了“偶然”、“意外”的含义。5 .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。(1) the remains表示“尸体”、
13、“残骸”,必须用复数形式:The villagers were surprised to see the remains of an aeroplane near the lake.村民们惊讶地发现湖边有一架飞机的残骸。(2) 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?(3) wire指具体的电线、铁丝等,line在这里指“线路”,含义比wire广。6 . When it did so当它
14、这样做时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。词汇学习 Word study1 . throwthrow作及物动词主要含义为“投,“掷,“抛二“扔”。当它与不同的介词或副 词连用时,其意义会稍有变化。
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