概念英语2第53课教案整编.ppt

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1、Lesson 53,Hot snake,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,hot adj 1）热的，炎热的 Strike while the iron is hot. 趁热打铁. hot 炎热的

2、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,fireman n 消防队员 hydrant haidrnt n.消防栓,fire extinguisher 灭火器 Extinguish ikstigwi put out 灭火,cause 1）V. 引起 cause sth : 引起（麻烦） 粗心导致事故 Carelessness causes

3、 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),The cause of sth 的起因,The reason for sth 的理由, 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 e

4、xamined 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 反义词 intentional 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., r

5、emains 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

6、 be done. 木已成舟 Whats 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 pow

7、er 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 ones power= beyond ones 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

8、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

9、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,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

10、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,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。 （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 light/ fire out. 请把灯关掉把

11、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. 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 我会试着查出昨天救了我的人的名字。 Ill try and find out the name of the person who saved my life yesterday.,3. Forest fires are often caus

12、ed 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。 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

13、了地面，但未能发现碎玻璃。 examine v. 检查，名词形式是examination, 通常简写成exam, 表示考试。 be able to 能够 ；be not able to 没有能够,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。 quite sure 相当的把握性 start a firecause a fire start vt. 使发生，引起,6. This morning, however, a fireman accidentally

14、 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。 Accidentally 表示事情出乎意料地发生，即 “意外地、偶然地” discover含有偶然发现（某个已经存在的东西）的意思，在discover前面加上accidentally更加强了“偶然性”和“意外性”。,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

15、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aroundround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

16、 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 examined(1. 4); were not able tofind(1. 5); did not start(1. 6); discovered (1. 7); noticed(1.

17、8); was wound(1. 8); was able to s olve(1. 9);dropped(1. 10); wound(1.11); it did so(1. 11); sent(1. 11); started (1. 11) What has happened： have put out(1. 1) What has been happening： have been trying to find(1. 2),C Jack looked at his watch for the twentieth time. Suddenly Jill arrived. Ive been w

18、aiting for over an hour, he said angrily. You never come on time. Oh, is that so?Jill answered. Were you here at 2. 30? Jack went red. Well, he said, I got here five minutes late myself, but you werent here. I came here at exactly 2. 30, Jill said, and I waited for five minutes, but you didnt come.

19、What have you been doing since then? Jack asked. Ive just been to the hairdressers，Jill answered brightly.,c 根据课文第二行 they have been trying to find out how the fire began 可以判断出只有c. wanted to find out what had caused the fire 最能说明消防队员仔细查看地面的原因，其他3个选择都不够全面。,2. d 根据课文第10-12行A bird had snatched up the sn

20、ake from the ground and then dropped it on to the wires When it I did so, it sent sparks down to the ground and these immediately started a fire 可以判断只有d. a snake which had been dropped on to the wires by a bird 与课文的实际内容相符，只有它是引起火灾的原因，其他3个选择都不符合课文的实际内容。,3. a 只有a. since最合乎题目意思和语法。因为本句是现在完成进行时，只有since引

21、导的时间短语最适合于完成进行时态，表示“自从以来”，所以应该选a.其他3个选择都不能引导合适的时间短语。,4. c 本句表示时间的词是often, 表示经常性的动作，因此应该用一般现在时。 a. is causing 是进行时，b. has caused 是完成时，d. is caused by 是现在时被动语态，而本句需要主动语态。 只有c. causes 是一般现在时，第3人称单数形式，本句的主语Broken glass 是单数，所以c.最符合语法，所以选c.,5. c a. almost certain(几乎肯定)， b. fairly certain(相当肯定)，c. complete

22、ly certain(完全肯定)， d. nearly certain(几乎肯定)4个选择中只有c. 同前一句中的quite sure(十分确信)意义最接近，所以选c.,6. c 只有c. succeeded in solving it (成功解决了它)同前一句中的 was able to solve the mystery (解开了这个谜)的含义相同，所以c.是正确答案。 其他3个选择都与前一句意思不符。,7. d 只有d. on是对的,因为它后面的词是the ground,表示在地面上,只能用介词on.其他3个选择都不符合题目意思. The snake had been on the gr

23、ound.这条蛇在地面上。 注意本句说的是在蛇被抓起之前，它在哪？它在地面上。,8. c a. controlled it (控制了它)；b. checked it (制止了它); c. extinguished it (扑灭了它)；d. turned it off (关掉，关上它)，只有c. extinguished it 与前面一句中的 put out the fire (把火扑灭) 意义相同，所以选c.,9. d 只有d. this morning 今天早上, 是正确的表达方式.其它3个选择都不符合习惯用法,都不是正确的表达方式.所以选d.,10. a a. by chance (偶然)

24、，b. chancily (没有这个词)；c. fortunately (幸运地) 和d. luckily (侥幸地，幸运地)这4个选择中只有a. by chance 同前一句中的accidentally (偶然地)意义相同，所以选a.,11. c 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. c a. 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snatched(抓住)意义相同,所以选c.,Bye-bye,