Unit 9 When was it invented?（Section A1a-2c）period1

课件39张PPT。A: What is the _______ used for?
B: It is used for ___________.Watching the time(watch the time)What’s this ?When was it invented ?It was invented
in 1927When was it invented ? Unit 9What are they used for?They are used for giving light.light bulbsWhen were they invented?They were invented in .light bulbs1879A: What is the _______ used for?
B: It is used for ___________.(study and play games )Studying playing games A: Do you know when it
was invented ?A: What is the _______ used for?
B: It is used for ___________.(count numbers )Counting numbersA: When was it invented ? calculatorDo you think the calculator was invented
before the computer?A: When was the _______ invented?
B: It was invented in ______.Pairwork (1c:P68)Who invented the car?_______ invented the car.Karl Benz Karl BenzThe car____ ________ by______.was invented him 1885When was it invented ?was invented1971It____ _________ in ______.1971BellA: Who was the telephone
invented by?B: It was invented by___.A: When was it invented ?B: I think it was invented in __. inventionshigh heelsadjustable heelsadjustable 可调整的inventionsice cream scoop
heat 加热scoopinventionsslippersa batterybatteriesoperate 操作Who were they invented by?
What are they used for?adjustable 可调整的operate 操作 heat 加热ListeningListen and number the
inventions in the order
that you hear.2a312Listen again and fill in
the blanks with the
words you hear.2bA: What are those ?B: They are battery– operated slippers.A: ______ are they used for ?What B: They ___ ____ for seeing in the dark.A: That’s cool! ____ were they invented
____?B: Julie Thompson. And look at this
heated ____ _____ _______.A: I know what it’s for. It’s used for
_________ out really cold ice cream. are usedWho by coldicecreamscoopingB: Right. It ____ ________ by Chelsea
A: My favorite are those shoes with ________ heels. You know – you can move the heels ____and______updown.They were invented ___ Jayce Coziarand Jamie Ellsworth.wasinventedadjustablebyB: And what are they used for?A: Well, you can change the ____ of your
shoes. You can ______the shoes go from casual to dressy.Lanmonstylemakeshoes with
adjustable heelsheated ice
cream scoopbattery-operated slippersbatteryelectric slippersbattery-operated slippersJulie Thompsonseeing in the darkWhat are they?Who were they invented by?What are they used for?heated ice
cream scoopChelsea Lanmonscooping cold ice creamWhat is it?Who was it invented by?What is it used for?The four great inventions in China When was it invented?
Who was it invented by?
gunpowderpapermakingcompassprintingNew inventions are invented all the time. Most of the inventions are helpful, but some of them are annoying. Inventions can change our lives.microwave oven用“invented” 或 “used for”填空.
1. What are electric slippers _______?
2. Who were shoes with adjustable heels ________ by?
3. When was tea ________?
4. What are microwave ovens _______?
5. When were potato chips ________?EXERCISESused forinventedused forinventedinventedA: Look! This looks so interesting!
B: Ah, it’s a great invention of China.
A: Really? When ______ it _________?
B: I think it ______ _________ in Han Dynasty.
(汉朝)
A: What ______ it ______ for?
B: Guess!
A: ______ it ______ for holding water?
B: No. It _____ ______ for testing earthquakes.
A: Wow, it’s really amazing! wasinventedwasinventedisusedIsusedisused.主动语态与被动语态：
英语动词有两种语态,即主动语态(The Active Voice)与被动语态（The Passive Voice)。
主动语态表示主语是动作的执行者;
被动语态表示主语是动作的承受者。


主动语态被动语态主动语态被动语态e.g Many people speak English.
主动语态变被动语态的步骤：
1、主动语态的宾语变为被动语态的主语；
2、主动句的谓语动词变为被动结构；
3、主动句的主语变为被动句的宾语，由by 引出，当不强调动作的执行者时，常省略。
4.其它成分不变。变被动语态时需要注意的事项一变
二套
三注意宾变主，主变宾，宾语前面by跟，谓语动词变过分，不忘前面be动词跟套时态，主被动时态一致注意因人称的变化而引起的主谓一致问题。各种时态的被动语态的构成： 1.一般现在时态
2.一般过去时态
3.一般将来时态
4.过去将来时态
5.现在完成时态
6.过去完成时态
7.现在进行时态
8.过去进行时态
9.含情态动词的 am, is, are +过去分词was, were +过去分词will/am.is.are going to
+ be +过去分词would/was.were going to
+ be + 过去分词have, has + been +过去分词had + been +过去分词am, is, are + being +过去分词was, were + being +过去分词情态动词 + be +过去分词所有时态的被动语态否定就是在
最前面的助动词后加 not
疑问就是把最前面的助动词提前。Many trees are not being planted nowAre many trees being planted now?把下列的句子变为被动语态的句子：
1、They speak English in Canada .
2、People used wood for making tables.
3、They are making computers in the USA.
English is spoken in Canada(by them).Wood was used for making tables.Computers are being made in the USA.把被动句变否定Computers aren’t being made in the USA.4、They have grown rice in South China.
5. We must plant more trees next year.

6.I am going to clean our classroom tomorrow.More trees must be planted next year.Our classroom is going to be cleaned tomorrow.Rice has been grown in South China.把被动句变疑问.Has rice been grown in South China？变被动语态的特殊情况一、双宾语
buy/make sb sth=buy/make sth for sbgive sb sth=give sth to sb1.My father bought me a computer.A computer was bought for me by my father.I was bought a computer by my father.2.He gives me a book.A book is given to me by him.I am given a book by himSth+be+ 过去分词+ for/to sb+ by sb.Sb + be+ 过去分词 sth + by sb二、无to不定式
一感 二听
三让
四看feellisten to.hearlet.have.makewatch. see.look at. notice变为被动时加上toeg. We often see him play basketball.He is often seen to play basketball by us.The boss made the children work for long.The children were made to work for
long by the boss.三、注意动词短语的常考到的动词短语有完整性take care oflook afterlisten tospeak toeg. 1.We should speak to the old politely.The old should be spoken to politely.2. The nurse takes good care of the baby.The baby is taken good care of by the nurse.四、无被动语态的动词。不及物动词及系动词happentake placedierisecome truecome outeg.1. An accident (happen) just now.happened 2. I’m sure that my dream .
(come true) some day in the futurewill come true常用的被动语态短语be made of
from
into
be used to do
for doing
as
由--制成的看出原材料看不出原材料原材料制成成品be filled with
be covered witheg. 1.Paper is made wood.from 2.Tables are made wood. 3.Wood is made paper and tables.ofinto被用来--被用作用--充满被--覆盖