Unit 9 When was it invented?(Section A Period 2)

课件46张PPT。Unit 9When was it invented?Section A Period 2 Words and expressionsbulb
light bulb
microwave
microwave oven
taste
lemonn. 电灯泡；电灯
电灯泡
n.微波
v.微波炉
n.味道；风味
n.柠檬18761885192719711976 When was the car invented?
It was invented in 1885.reviewIt is used for counting.calculatorWhat is it used for?What are they used for?They are used for giving light.light bulbs Practice conversations like thisWhen was ---- invented?
It was invented in---.
Who was it invented by?
It was invented by---?
What’s it used for ?
It’s used for---Translate the following phrases可调整后跟的鞋shoes with adjustable heels
battery-oprated slippers
heated ice cream scoop
the style of the shoes
who was sth invented by?电池控制的拖鞋加热的冰淇淋勺鞋的样式谁发明的某物microwave oven alarm clocklight bulb 3aDialogue 1:
A: What is this?B: It is an alarm clock.
A: What is it used for?
B: It is used for waking people up in
the morning.
A: Do you think it is annoying?
B: Sometimes, when I want to go on
sleep.Dialogue 2:
A: What is this? B: It is a light bulb.
A: What is it used for?
B: It is used for giving light.
A: Do you think it is helpful?
B: Yes, I think so. Because I always do
homework and read books in the
evening by its light.Dialogue 3:
A: What is this?B: It is a microwave oven.
A: What is it used for?
B: It is used for heating cold food and
cooking meals.
A: Do you think it is helpful?B: Yes, I think so. Because my parents
are very busy and I can use it to
cook meals by myself.What do you think is the most
helpful/annoying inventions?helpful n.+ful →adj.useful wonderful
beautiful hopefulannoyingadj.令人恼怒的， +物
annoyed=angry +人3a Helpful inventions: vacuum cleaner, soundproof door and window, car, computer, fax machine
Annoying inventions: air-conditioner, truck, telephone, junk food, ice creamDiscuss your opinions in 3a with your partner.3bA: What do you think is the most helpful invention ?
B:I think the most helpful invention is the light bulb.
A: Why is that?
B: Well, it gives people more time to work and play every day. Practice conversations like this
A: What do you think is the most
helpful/annoying invention?
B: I think the most helpful invention
is…
A: Why is that?
B: Well, it gives/helps people…
do you think 为插入语插入语在使用时的基本结构是特殊疑问词+ do you think+(主语)+陈述语气eg. Where do you think the book is?4.Groupwork What would you do if you are alone on a tiny island?A: I’d like to have some matches
because I could light a fire to keep
warm.
B: Yes, but that’s not going to help you
leave the island. I think it would be
better to have a cell phone.Dialogue 1:A: I’d like to have a telescope because
I could look far.
B: Yes, but that’s not going to help
you leave the island. I think it
would be better to have a signal
lamp.Dialogue 2:Self checkFill in the blanksI don’t like eating chocolate. It tastes too _____.
Mom added salt but it still wasn’t _____ enough.
I prefer lemons to oranges. I Like the ______ taste. sweetsaltysour4. She likes _____ cookies. They are hard, dry and easily broken.crispySelf Check The abacus was invented in the sixth century by Chinese people. The umbrella was invented about 4000 years ago in Assyria, China and Egypt. In Italy in 1854 , Ignatio Porro invented the binoculars. The Camera was invented by Joseph Nicephore Niepce in 1827 who took the first picture. The bicycle was invented in the 1880s in England. .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 am, is, are +过去分词
2.一般过去时态 was, were +过去分词
3.一般将来时态 will/am.is.are going to
+ be +过去分词
4.过去将来时态 would/was.were going to
+ be + 过去分词
5.现在完成时态 have, has + been +过去分词
6.过去完成时态 had + been +过去分词
7.现在进行时态 am, is, are + being +过去分词
8.过去进行时态 was, were + being +过去分词
9.含情态动词的 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1.The abacus was ________ by Chinese people .
2.Li Lei likes ______ cookies because they are hard , dry and easily broken .
3.The meat produced a ________ smell.
4.The most popular drink in the world was invented by ________.accident, invent, microwave, crispy, pleasantinventedcrispypleasantaccident根据句意填空。5.There are many __________(发明) in this museum.
6.How was the tea ________ (发明)?
7.Silk is __________(生产) in Suzhou and Hangzhou .
8.He always makes a lot of ________ (错误) in class .inventionsinventedproducedmistakes句型转换
1.People all over the world enjoy surfing .(同义句转换)
Surfing ___ ______ by people all over the world.
2.When he was thirty , Tom decided to move to London . (同义句转换）
At the ____ of thirty , Tom made a ________ to move to London .is enjoyedagedecision3.Kate took good care of the baby yesterday evening .(改为被动句）
The baby ____ ____ ____ ______ by Kate yesterday evening .
4.She was seen to come out of the library by him .(改为主动句)
He ____ ___ ____ out of the library .saw her comewas taken good care of5.Did you see the film last night ?(改为被动句)
____ the film ____ by you last night ?
6.Li Lei gave Tom a new pen last week .(改为被动句)
A new pen ___ _____ __ Tom last week .
7.He didn’t go to bed before he finished his work .(同义句转换)
He ____ ___ go to bed ____ he finished his work.Was seenwas given todid notuntilByebyeThank you