Unit 5 What are the shirts made of? Section A Grammar Focus -4c 课件(共21张PPT) 人教版英语九年级全册

(共21张PPT)
Unit 5
What are the shirts made of
Section A
3a~3c
What is the passive voice
Grammar Focus
Is it made of silver
It was made in Thailand.
What is the model plane made of
Where is tea produced in China
How is it grown
It is planted on the side of mountains.
They are picked by hand and then are sent for processing.
Read the sentences below, paying attention to the underlined parts.
被动语态
They do their homework after school.
Their homework is done by them after school.
My mother sweeps the floor every day.
The floor is swept by my mother every day.
Ann takes good care of the cats ．
The cats are taken good care of by Ann.
2. I bought a computer last term．
A computer was bought (by me) last term.
被动语态
定义：语态是动词的一种形式，用于表明主语与谓语之间的关系。
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
e.g. Many people speak English.
（主动语态, 句子的主语many people是
动作speak的执行者）
English is spoken by many people.
（被动语态, 句子的主语English是动作
speak的承受者）
被动语态的基本结构
be + 及物动词的过去分词
be有各种时态的变化，并有人称和数的变化。
Nowadays Chinese ______ by more and more people all over the world.
A. is spoken B. was spoken
C. speaks
主动语态变被动语态的方法
We speak English.
主语 谓语 宾语
English is spoken by us.
主语 谓语 宾语
宾变主，主变宾，前加by。
解题步骤
1. 找宾语—动作的承受者变主语；
2. 判断宾语单复数—be动词的单复数；
3. 判断动词时态—be动词的时态；
4. 修改谓语时态—原句动词改为过去分词；
5. 修改原句主语—即by+主语/宾语。
e.g. They make shoes in that factory.
Shoes are made by them in that
factory.
People play football all over the world.
2. The old man on TV tells a story on Sunday.
3. Students listen to the kind teacher carefully.
Football is played all over the world by people.
A story is told by the old man on TV on Sunday.
The kind teacher is listened to by students carefully.
把下列的主动句变为被动句。
二、句型转换
1.He sent sky lanterns out to ask for help.（改为被动语态）
Sky lanterns to ask for help by him.
were sent out
2.My students always share ideas in class.（改为被动语态）
Ideas always by my students in class.
are shared
3.We learn Chinese at school.（被动语态）
Chinese is learnt by us at school.
4.Your shirts are made of cotton.(改为一般疑问句，并作肯定回答）
-- your shirts of cotton
-- ,they .
Are made
Yes are
1. Children under 18 _____________ (not allowed) to watch this show without their parents.
2. We ________ (pay) by the boss on the last Friday of each month.
3. A: What language _________ (speak) in Germany
B: Most people speak German, but many can speak English, too.
are not allowed
are paid
4a
is spoken
4. Most of the earth’s surface __________ (cover) by water.
5. The classroom ___________ (clean) by the students every day.
is covered
is cleaned
2. This shop uses the best materials to make dresses.
3. Careless driving causes many traffic accidents.
The best materials are used by this shop to make dresses.
4b
Many traffic accidents are caused by careless driving.
4. The postman brings letters and postcards to people’s homes.
5. Our family does not use this silver plate very often.
Letters and postcards are brought to people’s homes by the postman.
This silver plate is not used very often by our family.
Ask five classmates about something they are wearing or have in their schoolbags. The list of words below may help you.
pencil, jacket, sweater, T-shirt, shoes, cap, gloves, ring...
A: What’s your pencil made of
B: It’s made of wood.
A: Where was it made
B: It was made in Shanghai.
4c
Homework