Unit 7 Know Our World Lesson 37 Let's Learn Geography! 被动语态教学课件

课件35张PPT。Welcome ！The Passive Voicemade by LiQinwaterwatered watereduseused usedstudystudied studiedstopstopped stoppeddodid doneriderode riddenFor examplecleanfinishplaysmokeplantcarryfind found found makemade madeinventbuild built builtsweep swept swepttake took takenbuy bought boughthave had hadLet’s have a try.sing sang sungtelltold toldgivegave givenShe waters the flowers every day.The flowersWhat does she do
every day?every day.are wateredby herThey do their homework after school.Their homework is done by them after school.He plays basketball every week. Basketball is played by him every week.My mother sweeps the floor every day.The floor is swept by my mother every day.jacketThe jacket is used for keeping warm.The jacket is made in Guangzhou.Guangzhoukeeping warmZhengzhouknivescutting thingssummary 英语中动词有主动语态和被动语态两种语态。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, 在被动语态中动作的执行者有时用by短语表示出来.一般现在时(simple present)：
S(主语)+am/is/are +过去分词(done)一般过去时(simple past)：
S+was/were +过去分词(done)2. I bought a computer last term．
A computer was bought (by me) last term.The light was invented by Thomas Edison .inventThomas Edison invented the light. Jim rode the motorbike to his factory yesterday.The motorbike was ridden to his factory yesterday. They had an evening party last week.An evening party was had last week.The Great Wall was built by Chinese people many years ago.Chinese people built the Great Wall many years ago.The students planted many trees yesterday.Many trees were planted by the students yesterday. Ann can take good care of the cats ．The cats can be taken good care of by Ann.
情态动词(model verb)：
S+ can/must/should等情态动词 + be+过去分词 He can carry the basket. The basket can be carried by him.They can sing some beautiful songs.Some beautiful songs can be sung by them.We should clean the classroom every day.The classroom should be cleaned by us every day.Our students mustn’t smoke cigarettes.Cigarettes mustn’t be smoked by our students.Ask and answer water
every day
at home
my grandmaA: When are the flowers watered?
B: The flowers are watered every day.A: Where are the flowers watered?
B: The flowers are watered at home.A: Who are the flowers watered by?
B: The flowers are watered by my grandma.A: Are the flowers watered by my grandma at home every day? B: yes, they are.sweep
on weekends
in the kitchen
my motherWhen where whodo
after school
in the classroom
the childrenbuild
long long ago
in Beijing
Chinese peoplebuy
last week
in Ningbo
Mary1.People use knives for cutting things.
Knives ______ ______ for cutting things.
2.The students clean the windows of their classroom twice a month.
The windows of their classroom______ _______ twice a month. are usedarecleaned(变被动语态）七嘴八舌3.I found the ticket on the floor.
______ ______ ______ ______ on the floor.
4.I told her to return the book in time.
She ______ _______ to return the book in time.The ticket was found was told3. We found the ticket on the floor .5. Last year we built a library in our
school.
A library _______ _______ in our school last year.
6.Now people can use computers to help them.
Now computers _______ ______ ______ to help them. was built can be used7. Did you plant many trees at this time last year?
_______ ______ _______ _______ at this time last time?
8.Must we finish our work today?
_______ our work______ _______ today?Were many trees plantedMust be finished9. The foreign friends gave us some wonderful stamps.
1) _______ ______ _______ some wonderful stamps.
2) Some wonderful stamps _______ ________ _______ _______. we were given were given to us10.The teacher asked Tom to turn on the computer.
Tom _______ ________ to turn on the computer.
11.In this factory women do most of the work.
Most of the work _______ ________ by women in this factory. was asked is done12.He can mend the bike in two days.
The bike ______ ______ _______ in two days.
13.You must take this medicine three times a day.
This medicine _______ _______ ________ three times a day. can be mended must be takenHave a try1. The emperor invented tea by accident.
2. Many Chinese can speak English.
3. They don’t wash their clothes every day.
4. The boy broke the door of the class.
Tea was invented by the emperor by accident.English can be spoken by many Chinese.Their clothes aren’t washed by them every day.The door of the class was broken by the boy.5. We didn’t solve the problem.
6. Did Mary finish the work?
7. His mother shouldn’t allow him to wear
earrings.
8. Should we water the trees every day?
9. We must stop people walking on the grass.The problem wasn’t solved by us.Was the work finished by Mary?He shouldn’t be allowed to wear earrings
by his mother.Should the trees be watered by us every day?People must be stopped walking on the grass.Fill in the blanks:
Paper ( invent)_______________ in A.D.105 by Cai Lun in China. It is an important part of our everyday lives, but few people ever think about how it (make) ____________.Today most paper comes from trees. However, with the concern for the environment (考虑到环境) , more and more paper (produce) ____________from recycled paper products. Since paper products are of different qualities, they first(sort分类)____________before they (recycle)_____________.The sorted material (put) _____________into a huge machine. was invented is made is produced are sorted are recycled is put