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新概念第二册lesson53 hot snake.ppt

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1、Lesson 53,Hot snake,Revision lesson 52,move into get a big surprise get / put in order gaze at to make matters worse for some time at the moment in ones spare time every inch,搬进 大吃一惊 整理好/收拾整齐 盯着看 更糟糕的是 一段时间/有一会儿 目前,此刻 某人空闲的时候 彻底,每一英寸,单词学习,hot fireman cause examine accidentally remains wind wire volt

2、 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,Revision lesson 53,趁热打铁. Strike while the iron is hot. 棘手或讨厌的事物或情况 a hot potato 木已成舟 Whats done is done. n.消防栓 hydrant haidrnt 灭火器 fire extinguishe

3、r,Revision lesson 53,力所不能及 not within ones power= beyond ones power 电力 electric power 发电厂 / 发电站 power plant/station 解开谜团 solve a mystery,Revision lesson 53,Put out a big forest fire Since then Find out / discover Broken glass Cigarette ends Throw away/at/ to Examine / check Start / cause the fire ac

4、cidentally/ by chance/ by accident,Revision lesson 53,The remains of The cause of The reason for Wind round Wind ones way Power line In this way Snatch up,hot adj 1)热的,炎热的 Strike while the iron is hot. 趁热打铁. hot 炎热的 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 Pepper and mustard are hot. 辣椒和芥

5、末是辣的. 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,hot adj. 热的;新鲜的;棘手的;带电的, 充电的 hot-hot-hot 麻辣烫; hot-wings 辣鸡翅; hot dog 热狗 hot-tempered 火暴(脾气)的 hot line 热线; hot topic 热门话题 hot news 最热点的新闻 hot cake 热蛋糕 It sells like a hot cake/cakes. 表示一个东西的畅销, 热销 best seller 畅销的东西,firemann 消防队员 hyd

6、rant haidrntn.消防栓,fire extinguisher 灭火器 Extinguish put out 灭火,cause 1)V. 引起 cause sth : 引起(麻烦) 粗心导致事故 Carelessness causes 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,Now y

7、ou try,Cause / reason 1. A man can _ but an animal cant. 2. The earthquake _ great damage. 3. It is difficult to relate _ and effect in this case. 4.One _ was that he had a sense of humor and could take a joke at his own expense. 5. What was the _ of the delay? 1. reason 2. caused 3.cause 4. reason

8、5. reason / cause, 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。(彻底检查) The firefighters examined every inch of the forest. 2)v. 诊查: 医生仔细的诊察了病人。 The doctor examined 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 i

9、ntentional 意外死亡 an accidental death accident n. 事故,意外 a car accident accidentally=by chance=by accident 我偶然间发现了金矿 I found a gold mine by accident., remains 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 dead body 毛主席的遗体被保存在水晶棺材里。 The remains of

10、 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 be done. Whats done is done. 木已成舟 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

11、with a piece of wire. telephone wires 电话线 Electric wires 电线 wireless adj. 无线的 wireless telegraph 无线电报 volt n. 伏特 voltage n. 电压,伏特数, power 1)电力,动力 electric power 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 powe

12、r 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 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 贼把她的包抓起来逃跑了。 The thief snatched her bag and ran awa

13、y. 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. snatch up 抓起来2)v. (趁机)迅速取得,急急忙忙吃完饭 他出其不意,吻了她一下。 He snatched a kiss from her.,辨析,snatch 迅速而有力(粗鲁地)抓住,抢, 强调动 作的突然性 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 chan

14、ce 抓住机会 2)掌握 grasp a language hold 抓住,握住,托住 Seize 抓住(用力)seize my arm,课文讲解,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 a

15、way. Yesterday the firemen examined the ground 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

16、 electric wires of a 16,000-volt power line. 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 d

17、own to the ground and these immediately started a fire.,【课文讲解】 1、Hot snake hot snake 触电的蛇 get an electric shock 触电,1. At last firemen have put out a big forest fire in California. at last 最后,终于,过程很艰难。 他们终于翻过了这座大山。 At last they climbed over the mountain California=Golden State 黄金州 put out 扑灭,熄灭,关掉 请把

18、灯关掉。 Please put the light out. 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. 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 ca

19、used 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 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. be able to 能够 ;

20、be not able to 没有能够,5.They were also quite sure that a cigarette end did not start the fire. 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(completely)ratherfairly 程度一个比一个轻 quite a few 颇有几个(相当多的) start a firecause a fire start vt. 使发生,引起,6.This morning, however,

21、a firemen accidentally discovered the cause. However与but区别: However要接逗号,再加句子。 But直接与句子相连。 accidentally =by chance 偶然地 discover 偶然发现(某个已经存在的东西) Invent 发明(以前没有的东西) 我不知道谁发现的美洲。 I dont know who discovered America. 你知道起火原因吗? Do you know the cause of the fire?,7.He noticed the remains of a snake which was

22、 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 村民们很惊奇的看到在湖的旁边有一架飞机的残骸。 The villagers were surprised to see the remains of an aeroplane near the lake.,Power line 电力线;输电线;电源线,electric wire,wind vt.,1)vt. 缠绕,卷在上(常与around/round连用) 你介意我把这段电线缠在树

23、上吗? Did you mind me winding this piece of wire round the tree?,2) vt. 蜿蜒,盘旋 一条小径沿著山谷蜿蜒而上。 A path wound up the valley. wind ones way 蜿蜒、迂回而行 他们在狭窄的山谷中迂回前进 They wound their way through the narrow valley. 3)转动(把手等),拧紧 wind up ones watch 上紧某人手表的发条 把 (车子的) 窗子摇下 wind down a window,8.In this way, he was ab

24、le to solve the mystery. in this way 就这样 9.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. snatched up sth from the ground从地上抓起来 drop vt&vi.无意掉下去的,使落下,使掉落 她把花瓶掉到了地板上。 She dropped the vase on the floor. 茶壶从她手里掉了出来。 The

25、 teapot dropped out of her hand。,fall vi. 落下,(雨、雪)下,降,跌倒,摔倒强调的是掉下来的概念, 动作 我跌倒了,伤到了我自己。 I fell and hurt myself. 当秋天叶落的时候,我就会回来。 When leaves fall in autumn, Ill come back. 他从楼梯上摔下来,把他的腿摔断了。 He fell down the stairs and broke his leg. 书从桌子上掉到了地上。 The book fell from the table to the floor。,10.The snake t

26、hen wound itself round the wires. 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 我也这样认为。 I think/believe so. start a fire=cause a fire 引起一场大火,【Summary writing】,1 Have firemen put out a big f

27、orest fire in California or not? Have they been trying to discover its cause? (Now that .) 2 Was there any evidence that it was started by broken glass or by a cigarette end or not? 3.Who has just solved the mystery? (however) 4. What did he notice ? Had it been dropped by a bird on to the electric

28、wires or not ? (which) 5 Where did the snake wind itself? What had it sent to the ground? Did this cause the fire or not? (In winding. and),【Key structures】,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

29、、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。,【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 cigar

30、ette ends carelessly.,Cause and Reason cause n. 原因,起因; Do you know the cause of the war? 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 n. 理由,原因 Give me your reasons for going there. What was the reason for the delay?,作“原因”讲时,reason与cause可以互换,但reason与介词f

31、or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. 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) As he walked past the tree, an apple dropped from it. The waiter dro

32、pped 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, Ill come back.,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

33、一本书。 (动作已经完成),与现在完成时的联系,They have been living in this city for ten years. They have lived in this city for ten years. 他们在这个城市已经住了10年了。 I have been working here for five years. I have worked here for five years. 我在这里已经工作五年了。,和现在完成时态连用的时间状语主要有以下三种:,1句中出现just,never,ever,already,yet,lately , recently,be

34、fore, these years / months / days等词时。 2句中出现“for + 时间段”或since + 时间点或since引导的时间状语从句(一般多为过去时)。 3句中出现up to now(直到现在),so far(到目前为止),since then,in the past / last + 表示一段时间的词语时。,二、现在完成进行时由“助动词have / has + been + 动词的现在分词”构成,即have / has been doing,其否定形式是在have / has后面加not,一般疑问句把have / has提到句首即可。 1表示从过去某时开始一直延

35、续到说话时还在进行的动作,可能还会继续进行下去,它通常和“for + 时间段”或“since + 时间点 / 从句”连用。 2表示从过去某时开始,一直延续到说话的时刻,刚刚结束的动作,在某种情况下与现在有关联。 【注意】1)有些不能用于现在进行时的动词(如be,have,like,love,know,see,hear等),同样也不能用于现在完成进行时,而应使用现在完成时。 2)表示短暂动作的动词(如finish,marry,come,go等)不能用于现在完成进行时。,时态对比: 1现在完成进行时与现在进行时比较: 现在完成进行时强调某一动作从过去一直延续到现在,而现在进行时只指目前正在发生的动

36、作。 Susan has been reading that storybook since last night. Susan is reading a storybook now.,2现在完成进行时与现在完成时比较:现在完成进行时和现在完成时都表示动作从过去开始,但是现在完成时表示动作刚结束,而现在完成进行时则强调动作仍在继续。 They have been repairing the broken road. 他们一直在维修那条被损坏的道路。(动作仍在继续) They have already repaired the broken road. 他们把那条被损坏的路修好了。(动作已经结束

37、),3现在完成进行时通常与all morning / afternoon / day或the whole day等连用,never,yet,already和ever等词可用于现在完成时,不能用于现在完成进行时。,4现在完成进行时表示一种不间断的持续性行为,提问时用how long;如果表示动作反复发生用现在完成时,提问时用how many times。 How long have you been writing this letter? Ive been writing it for two hours. How many times have you written to him? Ive

38、 written to him three times, but I havent heard from him up till now.,1 Now that fireman have put out a big forest fire in California ,they have been trying to discover its cause. now that 既然 2 evidence n. 证据 区分同位语从句与定语从句地区别:如果that做了主语或者宾语, 是定语从句;如果that既不作主语也不作宾语, 是同位语从句 fact , evidence 的后面往往是加同为语从句 5 (In) winding itself around the wires the snake had sent sparks to the ground and it caused the fire. 介词“in”“on”放在动词“-ing”前面的理解方式和没有“in”“on”的理解方式一样,

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