上海版牛津初中英语课件　Chapter3 A dangerous servant　.ppt

chapter3 a dangerous servant,reading,new words and expressions,1.battery batteries 2.scratch ones head: think hard in order to find an answer 3.a light bulb 4.be careful with: give attention to sth. 5.be connected to: join 6.a dangerous servant: a person who works in another persons house, and cooks, cleans ,etc, for them. v. serve/ n. service / n. servant,new words and expressions,1.battery batteries 2.scratch ones head: think hard in order to find an answer 3.a light bulb 4.be careful with: give attention to sth. 5.be connected to: join 6.a dangerous servant: a person who works in another persons house, and cooks, cleans ,etc, for them. v. serve/ n. service / n. servant,7.invisible: that cannot be seen 8.forms of energy: shapes or kinds 9.an iron 10.a rice cooker 11.a grin: a wide smile 12.get a bill 13.a meter 14.monthly: every month 15.in a way: not completely partly,16.thats not a bad explanation: words that make something clear v. explain 17. movement energy: moving or being moved v. move 18. at last : in the end finally 19. a cable,p32. c1.c2 and c3,p32. c1.c2 and c3,p32. c1.c2 and c3,p32. c1.c2 and c3,electricity,monthly,in a way,energy,buried,p32. c1.c2 and c3,what are they?,a vacuum cleaner,a light bulb,a fan,an air conditioner,a washing machine,a television,mobile phones,a radio,a rice cooker,a torch,an iron,how do these electrical appliances work?,electricity,light energy,heat energy,movement energy,sound energy,radio,tv,torch,rice cook,fan,vacuum cleaner,iron,computer,mobile phones,heat energy movement energy light energy sound energy,s,l s,l,h,m,m s,h,l s,s,electricity,questions: what is electricity? what can we change it into? is electricity important or dangerous?,i. to skim the whole text and think about the questions. 1. who were talking about electricity? 2. what did benny want to buy? 3. could daisy buy electricity when she returned? 4. who was looking foolish at last? page30 b look and think,a packet of sweets and a packet of electricity.,electricity.,benny.,i. to skim the whole text and think about the questions.,because if not used carefully, electricity can hurt us.,1. listen to paragraphs 1-3 carefully . 2. practice reading out what benny said. 3. lets see who reads best.,show time !,2. to fill in the blanks. electricity is a good _. it flows through a _ . a _ measures the amount you use and you get a _ for it _.it is like water in a _. electricity is _ . however, we can change it into _ that we can _, _and _. but sometimes electricity is much _ _. so we must _ it.,servant,wire,meter,bill,monthly,way,invisible,forms of energy,see,hear,feel,dangerous,more,be careful with,.read paragraphs 4-8 1. to think about the question “what does electricity look like?”,paragraph 5.,.read paragraphs 9-13 how does electricity get to bennys flat?,it comes into our flat through thin wires, and these are connected to thick wires (cables) that are buried under the street. the thick wires are connected to a power station.,wires,meter,cables,street,power station,be connected to,be buried,2. to do true or false. (1).( ) at first benny thought his trick had been successful. (2).( ) daisy bought packets of electricity for benny when she returned from the shop. (3).( ) the chemicals inside the batteries produce electricity.,t,f,t,. read paragraphs 14-21 1. “who looked foolish at last?”,benny.,discuss,how does electricity come to our cl