新概念-第二册53课时课件

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,53.Hot 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 fire-,men 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.,53.Hot Snake,This morning,however, a fireman accidentally dis-covered the cause. He 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 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 started a fire.,This morning,however, a firema,New words and expressions,hot,adj. 带电的，充电的,a hot wire高压电线,热的,麻辣烫：,hot-hot-hot,辣鸡翅：,hot-wings,hot-line :热线,hot topic :热门话题,hot potato :烫手山芋（喻指棘手的问题）,hot dog :热狗,New words and expressionshot,fireman,n. 消防队员 mn,firemen 复数 men,cause,v. 引起； n. 原因,n: What is the cause of failure?,v: cause sth.: 引起麻烦,What causes the failure?,cause sb to do sth. :导致某人做某事,Illness caused him to lose the game.,Because 因为 be cause,examine,v. 检查,examine sth.,examination n.,physical examination 身体检查,新概念-第二册53课时课件,accidentally,adv. 意外地，偶然地,accident : n. 事故,accident-accidental-accidentally,I met my favorite singer star accidentally.,accidentallyadv. 意外地，偶然地,remains,n. 尸体，残骸,dead body,corpse k:ps,remain:遗迹；剩余物,wire,n. 电线,electric wire,volt,n. 伏特（电压单位）,power line,电力线,solve,v. 解决,solve the mystery(迷),solve the problem,remainsn. 尸体，残骸,mystery,mistri n. 谜,神秘,snatch,v. 抓住,snatch up 夺取，抓取,spark,n. 火花,electric spark 电火花,新概念-第二册53课时课件,Questions,1.What are forest fires,often,caused by?,2.What caused the fire?,Questions1.What are forest fir,1.Forest fires are often caused by broken,glass or by cigarette ends which people,carelessly throw away.,1.Forest fires are often cause,2.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 started a fire.,2.A bird had snatched up the s,Language points:,1.put out a fire : 扑灭火,Firemen tried to put out the fire .,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,have been doing 现在完成进行时,Since last month, I have been trying to lose weight.,Language points:1.put out a fi,find out 查明,find out the truth,宾语从句,find out 查明,be able to do 能够做某事 can,I am able to paly basketball/speak English.,in this way :以这种方式,只有以这种方式才能解决问题。,Only in this way can you solve this problem.,be able to do 能够做某事 can,Forest fires are often caused by broken,glass or by cigarette ends,which,people,carelessly throw away.,fires 复数，泛指许多火灾,broken glass碎玻璃 break,glass 不可数,a glass 一个玻璃杯,glasses 眼镜,Do you know the man,wearing glasses,over there?,Forest fires are often caused,cigarette ends香烟头,which 引导定语从句，在从句中充当宾语,that,cigarette ends香烟头,What can we do to avoid forest fire?,1.awareness 意识,2.from small things,3.from ourselves,3.call on 呼吁,What can we do to avoid forest,