新概念英语第二册课件Lesson53(共19张PPT).ppt
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1、 53.Hot Snake 触电的蛇At last firemen have put out a big forestfire in California.Since then,they havebeen trying to find out how the fire began.Forest fires are often caused by brokenglass or by cigarette ends which peoplecarelessly throw away.Yesterday the fire-men examined the ground carefully,butwer
2、e not able to find any broken glass.They were also quite sure that a cigaretteend did not start the fire.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
3、 solve themystery.The explanation was simple butvery unusual.A bird had snatched up the snake from the ground and thendropped it on to the wires.The snake then wound itself round the wires.Whenit did so,it sent sparks down to the ground and these immediately started a fire.New words and expressionsh
4、ot 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-wingshot-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 firemann.消防队员 mn firemen 复数 mencausev.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
5、.Because 因为 be causeexaminev.检查examine sth.examination n.physical examination 身体检查accidentallyadv.意外地,偶然地accident:n.事故accident-accidental-accidentallyI met my favorite singer star accidentally.remainsn.尸体,残骸dead bodycorpse k:psremain:遗迹;剩余物wiren.电线 electric wire voltn.伏特(电压单位)power line电力线solvev.解决s
6、olve the mystery(迷)solve the problemmysterymistri n.谜,神秘snatchv.抓住 snatch up 夺取,抓取sparkn.火花electric spark 电火花 Questions1.What are forest fires often caused by?2.What caused the fire?1.Forest fires are often caused by broken glass or by cigarette ends which people carelessly throw away.2.A bird had s
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