Module1 Unit 3 Electricity (More practice)

课件15张PPT。1Nature and environmentMore practice*Electricity3Before you readWhile you readAfter you readCONTENTS PAGEBefore you read3-1123A1 Complete the sentences with the words from the box.Modern people use more __________ than people in the past.
Don’t touch the __________! You’ll get an electric __________.
When the workers were digging up the road, they cut the __________. As a result, there was a __________ in the area.blackout wire
energy
cable
shockenergywireshockcableblackoutA2 Now, use your dictionary and find out whatthese five words mean.3-2123blackout
wire
energy
cable
shocka period of darkness caused by a cut in the electricity supply
something carrying electricity
the power that makes things work
a thick, strong rope made of wire
a very strong force or blow3-3123B Electricity is important. Discuss with yourclassmates. What would our lives be like without electricity?While you read4-1123A Now, read the article about electricity.4Electricity works everywhere
Almost everyone today uses electricity in one way or another. It is hard to imagine what life in our cities would be like without it. Electricity lights streets and buildings, and warms people and animals. It heats food in cookers and cools it in refrigerators. It drives trains and works traffic lights and lifts.4-21234It also works the machines in factories that make all kinds of goods. Everyday wonders such as computers and televisions use electricity to bring entertainment and news to millions of families. In villages and on farms, electrical machines milk the cows and chop their food. They also cool the milk and churn① the butter. Indeed, electricity finds as much work to do in the countryside as it does in the cities.① churn v. 搅拌B Match these words with their meanings.fdbeca4-31234C Work in pairs. List four of the uses ofelectricity mentioned in the passage and add two more of your own to the list.4-41234Electricity lights streets and buildings.
Electricity heats food in cookers.
Electricity drives trains.
Electricity makes computers work.
Electricity powers the underground.
Electricity makes fans and air conditioners work in summer.After you readA Look at the pictures below. Work in pairs and discuss what we must and must not do to save electricity.5-112345________________________________________________________________________________________________________________________________________We must use fewer lights.We must turn off the fan when we are not in the room.5-212345________________________________________________________________________________________________________________________________________We must not keep water boiling for a long time.We must close the fridge door.5-312345________________________________________________________________________________________________________________________________________We must turn off all the lights before we leave the house.We must close the windows when the air conditioner is on.5-412345B The following pictures show that the peoplein the pictures have done something wrong. Discuss and point them out.5-512345