新概念二冊(cè)53課課件(共38張)

1、forest fireforest fireWhat may cause the forest on fire?What will be the possible results/effects?What can be done to prevent forest fires?What may cause the forest on fCauses of forest fire Human reason is one of the biggest factors Long dry weather (drought) may also cause ground temperature risin

2、g, forest material easy cause spontaneous combustionlightning can also cause fireCauses of forest fire Human rea forest fire caused by the drought in Guizhou Province inMarch 5tha forest fire caused by human activity in Australiaa forest fire caused by lightning in Californiaa forest fire caused by

3、the dr新概念二冊(cè)53課課件(共38張)Terrible effects of forest fireFire destroyed forest creaturesThe air will be polluted, and peoples lives will be in dangerTo put out the forest fire cost a lot of human, material and financial resourcesTerrible effects of forest firpreventive measurespreventive measuresprevent

4、ive measuresSet up/found fire organizationsNo smoking in the forest Sources must be strictly controlledEnhance/strengthen the consciousness of firepreventive measuresSet up/founA True StoryA True StoryA bear went out of the zoo to search for his child. Surrounded by so many people , he climbed the e

5、lectrical pole out of panic(驚慌).A bear went out of the zoo to When he reached the top of the pole, he didnt know what to do.When he reached the top of theHe decided to get down, but unfortunately, he was killed for touching the wire.He decided to get down, but unFinally, he fell from the pole and wa

6、s burned to death.Finally, he fell from the poleWhat will happen when an eagle throws a snake right around an electrical pole and electrical wire ?It will catch fire /be on fire!What will happen when an eagle【New words and expressions】hot adj. 帶電的，充電的fireman n. 消防隊(duì)員cause v. 引起； n. 原因examine v. 檢查acc

7、identally adv. 意外地，偶然地remains n. 尸體，殘骸wire n. 電線volt n. 伏特（電壓?jiǎn)挝唬﹑ower line 電力線solve vt. 解決mystery n. 謎（無(wú)法接受地, 解釋不了的）mysterious adj.snatch v. 抓住spark n. 電火花【New words and expressions】Lesson 53 Hot snake What caused the fire in the story? An unusual explanationLesson 53 Hot snake What cCareful reading

8、Where did the big forest fire break out?Has the fire been put out?What have the firemen been trying to do ever since then?What are forest fires often caused by?Did they find any broken glass or cigarettes?How did the fireman discover the cause?What did the fireman notice?What is his explanation?Do y

9、ou think the explanation acceptable?1. The big forest fire broke out in California.2.Yes, it has been put out at last.3. They have been trying to find out how the fire began.4. Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away.5. No. Though the fir

10、emen examined the ground carefully, they were not able to find any.6.They discovered the cause accidentally/quite by accident.偶然地7. He noticed the remains of a snake which was wound round the electric wires of a 16,000-volt power line.8. A bird had snatched up the snake and dropped it onto the wires

11、. Then the snake wound itself round the wires and sent sparks down to the ground, starting a fire.9. The explanation is simple and unusual, but acceptable in my opinion.Careful readingWhere did the b1.hot adj. 帶電的, 充電的;熱的；新鮮的；棘手的；帶電的, 充電的hot-hot-hot 麻辣燙；hot-wings 辣雞翅；hot dog 熱狗hot-tempered 火暴(脾氣)的ho

12、t line 熱線；hot topic 熱門(mén)話題a hot cake 暢銷(xiāo), 熱銷(xiāo)=best seller 暢銷(xiāo)的東西hot potato 棘手的問(wèn)題hot news 最熱點(diǎn)的新聞1.hot adj. 帶電的, 充電的;熱的；新鮮的2.fireman n. 消防隊(duì)員hydrant n. hadrnt消防栓, 消防龍頭fire extinguisher kstgw 滅火器 （extinguisher n. 熄滅者, 滅火器）extinguishput out a big fire 滅火新概念二冊(cè)53課課件(共38張)3. Have been doing5年前我在這家工廠工作過(guò)。I worked

13、in the factory 5 years ago.你在這家工廠工作過(guò)嗎？Have you ever worked in this factory?我沒(méi)去過(guò)重慶。I havent been to Chongqing.我在這家工廠已經(jīng)工作了15年了。I have been working in this factory for 15 years.已經(jīng)連著下了三個(gè)星期的雨了。It has been raining on end/continuously for 3 weeks.3. Have been doing5年前我在這家工廠工作過(guò)4. look for /find/find outfind

14、 out （經(jīng)過(guò)研究、努力等）找出，發(fā)現(xiàn)，查出（這里find out的賓語(yǔ)是個(gè)從句） Ill try and find out the name of the person who saved my life yesterday.科學(xué)家們尚未發(fā)現(xiàn)生命是如何開(kāi)始的。Scientists havent found out how life began.4. look for /find/find out5. 【Special Difficulties】 cause v.& n. 引起；原因 v. 引起cause sth. /be caused by 引起麻煩Pride causes failure

15、. 驕傲使人失敗 The accident is caused by carelessness. 事故由粗心導(dǎo)致cause sb. to do sth. 導(dǎo)致某人做某事Illness caused him to lose his temper. (lose ones temper 發(fā)火)5. 【Special Difficulties】 cau n. 原因，強(qiáng)調(diào)事情發(fā)生的直接原因(一個(gè))because 因?yàn)?reason 理由，其他各種的理由(很多個(gè))Give me your reasons for going there.What was the cause of the delay?作“原

16、因”講時(shí)，reason與cause可互換，但reason與介詞for連用；而cause則與介詞of連用。 n. 原因，強(qiáng)調(diào)事情發(fā)生的直接原因(一個(gè))Give mereason n. 理由，原因reason后面通常跟why引導(dǎo)的從句： That was the reason why the meeting was put off. v. 推理，勸導(dǎo)，說(shuō)服reason with sb. 勸說(shuō)(以道理)，理論 How can you reason with him when he is so worried?reason 【Special Difficulties】 6. Throw to，Thro

17、w at and Throw awaythrow作及物動(dòng)詞主要含義為“投，擲，拋，扔”。throw to (sb.) 扔給（某人） He threw the ball to me and I caught it.throw at 對(duì)準(zhǔn)某一目標(biāo)扔 The boy threw a stone at the window and broke it.throw away 扔掉，丟棄 Many people throw away cigarette ends carelessly.【Special Difficulties】 7. Sure=certain?I am sure that.I am qui

18、te sure that the fire is caused by a hot snake.Be sure of the cause of the fire.I am not sure about that.Sure!/of course!It is sure that?7. Sure=certain?I am sure that8. examineexamine v. 檢查examine the soiltake an exam.參加考試，接受檢查check v. 核實(shí), 核對(duì)Check the emailCheck in/out登記入住，結(jié)賬離開(kāi)8. examineexamine v.

19、檢查9.accidentally adv. 意外地, 偶然地 (但更趨向于 “偶然” 的意思)=by accident/chanceunexpectedly adv. 出乎意料地(更趨向于 “意外” 的意思)9.10. wind vt. 纏繞，卷在上；盤(pán)旋，蜿蜒 vt. 纏繞，卷在上（常與around/round連用）Did you wind this piece of wire round the tree? vt. 蜿蜒，盤(pán)旋wind ones way 蜿蜒而行 10. wind vt. 纏繞，卷在上；盤(pán)旋，蜿蜒11. power1）電力，動(dòng)力 electric power 電力water

20、 power 水力2）力,能力 （自然的體力、智力）His power is failing.他的體力在衰退。3）權(quán)力,支配力,勢(shì)力 political power 政治權(quán)力not within ones power= beyond ones power 力所不能及我無(wú)法理解計(jì)算機(jī)是如何工作的。It is beyond my power to understand how the computer works.11. power wiren. 金屬線，電線 telephone wires 電話線Electric wires 電線wireless adj. 無(wú)線的 wireless telegr

21、aph 無(wú)線電報(bào)volt n. 伏特voltage n. 電壓,伏特?cái)?shù) wire12 solve v. 解決solve the mysterysolve the problemsnatch v. 抓住catch v. 抓，如抓魚(yú)hold v. 握著snatch v. (突然抓起來(lái))強(qiáng)調(diào)動(dòng)作的突然性seize v. 抓住(用力)seize my arm12 solve v. 解決13. Drop and Falldrop vi.&vt. （使）掉下，（使）落下，放下（強(qiáng)調(diào)的是不小心掉下來(lái)） As he walked past the tree, an apple dropped from it.

22、 The waiter dropped a fork.fall vi. 落下，（雨、雪）下，降，跌倒，摔倒（強(qiáng)調(diào)的是掉下來(lái)的概念, 動(dòng)作） I fell and hurt myself. When leaves fall in autumn, Ill come back.translation13. Drop and FalltranslationAt last firemen have put out a big forest fire in California. Since then, they have been trying to find out how the fire bega

23、n. Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away. 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 f

24、iremen accidentally discovered the cause.At last firemen have put out aHe noticed the remains of a snake which was wound round the 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