Unit3Electricity.ppt

1、Welcome to My Class!,Electricity is a good servant, but a dangerous one.,What was Daisys Dads opinion about electricity?,People have lots of electrical appliances at home. These are the items in Bennys family. Do you know what they are?,Televison,electric lights,kettle,vacuum cleaner,fridge,rice coo

2、ker,washing machine,iron,air conditioner,mocrowave oven,Televison,electric lights,kettle,vacuum cleaner,fridge,rice cooker,washing machine,iron,air conditioner,mocrowave oven,We use a kettle to boil water / for boiling water,what may happen if we dont use it properly?,There is a problem with the ele

3、ctricity in Bennys flat. Sometimes all the electricity goes off. An electrician has come to deal with this problem. Listen to the conversation between the electrician and Bennys mother. They are trying to find out which things were switched on or off when the electricity stopped. Circle ON or OFF be

4、low the pictures.,Electrical appliances that were always on : _ what may cause the problem? Conclusion: _,The lights 、air conditioner、the television and the fridge,The rice cooker may cause the problem,It was on last time when all the electricity went off too.,The last sentence is: _,ill start by ch

5、ecking the plug.,Have you ever thought about why we need to turn off the switch when we leave school?,Safety at home,Johnnys father believes in safety first at home.,Work in pairs. S1 is Johnny and S2 is Johnnys father. S1 asks questions using the words under the pictures.S2 uses the sentence patter

6、ns in the box to answer S1s questions. Follow the conversation between Johnny and his father.,S1May I turn on the water heater? S2No, you may not. You must open the window. Then you may turn on the water heater.,_ cover the meat. Then _. _ lock the door. Then _. _ look through the peephole. Then _.

7、_ open the window. Then _. _ pick up all your toys from the floor. Then _. _ test the water. Then _.,_ turn on the water heater?,It is dangerous to use a water heater without opening the window, as there may be a gas leak.,_ cover the meat. Then _. _ lock the door. Then _. _ look through the peephol

8、e. Then _. _ open the window. Then _. _ pick up all your toys from the floor. Then _. _ test the water. Then _.,S1May I put the meat in the fridge? S2No, you may not. You must cover the meat. Then you may put the meat in the fridge.,_ put the meat in the fridge?,bacteria 细菌 contact 接触,_ cover the me

9、at. Then _. _ lock the door. Then _. _ look through the peephole. Then _. _ open the window. Then _. _ pick up all your toys from the floor. Then _. _ test the water. Then _.,_ give the puppy a bath?,S1May I give the puppy a bath? S2No, you may not. You must test the water. Then you may give the pup

10、py a bath.,_ cover the meat. Then _. _ lock the door. Then _. _ look through the peephole. Then _. _ open the window. Then _. _ pick up all your toys from the floor. Then _. _ test the water. Then _.,S1May I open the door? S2No, you may not. You must look through the peephole. Then you may open the

11、door.,_ open the door?,If you look through the peephole, you can see who is outside without opening the door.,_ cover the meat. Then _. _ lock the door. Then _. _ look through the peephole. Then _. _ open the window. Then _. _ pick up all your toys from the floor. Then _. _ test the water. Then _.,S

12、1May I go to bed? S2No, you may not. You must lock the door. Then you may go to bed.,_ go to bed?,_ cover the meat. Then _. _ lock the door. Then _. _ look through the peephole. Then _. _ open the window. Then _. _ pick up all your toys from the floor. Then _. _ test the water. Then _.,_ go out now?,S1May I go out now? S2No, you may not. You must pick up all your toys from the floor. Then you may go out.,How to use electricity safely at home,microwave safe container heater 加热器,To make our life safer and more convenient, we need to have a full understanding on