九年级全>Unit 9 When was it invented?>Section A> part1课件

课件39张PPT。Welcome to my class
When was it invented ?Unit 9 Period 1Learning Aims:1.To learn Passive Voice(被动语态）,to know the structure of it.
助动词 be+(及物动词的）过去分词
一般现在时：am(is are)+done
一般过去时：was/were+done

2. To learn some new words and expressions.
Words: invent adjustable caculator etc
Sentence:talk about the history of inventions.
1.--- Who was telephone invented by?
--- It was invented by Bell.
2.---When was it invented?
---It was invented in1876.
3.---What is it used for?
---It is used for talking with people.

3.To improve your ability of listening by doing some listening exercises.
Ways of learning:1.Read the words and expressions in the textbook,then do some exercises.
2.Use some pictures to talk about the history of inventions and to learn the Passive Voice.点击思维 about the words
1 Who i________the light bulb.
2 The height of the bike seat is a________.
3 Everyone can o_______ this machine easily,so this job doesn’t need much skill .
4 I need a pair of s_______ to wear at home .
5 This radio doesn’t work .Maybe the b________are running out
6She likes wearing shoes with a high h____
7We will h_____ some milk for coffee.
自主学习 nvented djustable peratelippers atterieseeleatFour Great Inventionsgun powdercompasspaper makingprintingCai Lunpaper makinginventedwas invented byCai Lun invented paper making.
主动语态：主语是动作的执行者
Paper making was invented by Cai Lun.
被动语态：主语是动作的承受者Edison invented the light bulb.The light bulb was invented by Edison.Who was the light bulb
invented by?The telephone by Bell.was invented Who was the telephone
invented by?Bell invented the telephone.______ was invented by _______.The carKarl BenzWho was the car invented by?Karl Benz invented the car.Who was (telephone) invented by?
It was invented by Bell.Karl Benz
Edison
Bell
Cai Lun
Wright brothers
FisherinventorsinventionsPapermaking
Plane
Washing machine
Light bulb
Car
TelephoneA: When was the telephone invented?
B: Well, I think it was invented in ….
Guess1885
1876
1927
19711bListen and match the inventions
with the dates.abedc1876___
1885___
1927___
1971___
1976___dabec1a13425Answer : the right order they were invented18761885192719711976Remember When was the car invented?
It was invented in 1885.A: When was the _______ invented?
B: I think it was invented in ______.Pairwork (1c:P68)19761885187619271971A: What is the _______ used for?
B: I think it is used for _______________
.talking with peopleA: What is the car used for?
B: The car is used for traveling. A: What is the
used for?
B: I think it is used for _____.(ride)
ridingA: What is the
used for?
B: I think it is used for ________.(work)workingWhat are they used for?They are used for giving light.light bulbsA: What is the _______ used for?
B: It is used for __________.counting(count)calculatorA: What is the ________ used for?
B: It is used for __________________ .making the food hot.(make the food hot)microwave ovenWhat is/are … used for?
It’s/They’re used for…battery-operated
slippersheated
ice cream scoopshoes with adjustable heels电池供电
的拖鞋加热的
冰激凌勺可调节
后跟的鞋2aListen and number the inventions in
the order that you hear.312Listen again. Match the inventions with their inventors and uses.2bWhat are they used for?They are used for seeing in the dark.PAIRWORKWhat is it used for?It is used for scooping really cold ice cream.What are they used for?They are used for changing the style of the shoes.
A: What is this? B: It is a car.
A: What is it used for?
B: It is used for driving.
A: Who was it invented by ?
B: It was invented by Karl Benz. A: When was it invented ?
B: It was invented in 1885.
Karl Benz18851976 Steve Jobs 1876Bell 1927John1. My jacket is made of cotton.2. Stamps are used for sending letters.3. It was built in 1380.4. Buildings were made of stone and metal.5. It was used for travelling.The passive voice.被动语态主动语态变被动语态的结构图:Bell invented the telephone in 1876.
The telephone was invented by Bell in 1876. 主语谓语动词过去时宾语时间状语主语谓语动词的过去分词宾语时间状语主动语态变被动语态的口诀：宾变主，主变宾，by短语跟面。
谓语动词变被动，be后“过分”来使用。1. The woman asked the policeman for help.
2. The old man on TV tells a story on Sunday.
3. Do they use the box as a table?
4. The lazy boy didn’t wash clothes yesterday .
5. She gave Jim a present that day.练习：请把下列主动句变为被动句Check your answers!1.The policeman was asked for help by the woman.
2.A story is told on TV by the old man on Sunday.
3.Is the box used as a table by them?
4.Clothes weren’t washed by the lazy boy yesterday.
5.A present was given to Jim by her that day.
Jim was given a present by her that day.
Thank you!Bye-bye