新概念英语二第53 课 Hot snake.ppt

Lesson53 Hot snake 主讲老师：Alan forest cigarette ends snake wire sparks firemen put out ★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)带电的，充电的 V. charge: 充电 充电器：charger. ★fireman n 消防队员 fire extinguisher 灭火器 Extinguish [ik`sti?gwi?] ＝put out 灭火 superman Spiderman ★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 ★ 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 examined his patient carefully ★ 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 solve v. 解决,解答,回答 =work out 解决问题 solve a problem 解开谜团 solve a mystery 我们必须解决经济危机。 We must solve the economic crisis. Key words ＆expressions 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 Questions on the text 1.What are forest fires often caused by? 2.What led the fireman to discover the cause of the fire? 3.What was the explanation? Text: 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 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 fireman accidentally discovered 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 ve