Unit 5 What are the shirts made of Section A 4a-4c 课件(共25张PPT)

(共25张PPT)
Unit 5 What are the shirts made of Section A 4a-4c
● To learn Passive voice with present tense
● How to use the passive voice to communicate
the raw materials of everyday things.
Learning Objectives
Revision
1.在...制造
2.由...制成
3.在过去
4.不论；无论
5.在将来
be made in
be made of/from
in the past
no matter
in the future
Free-talk
A: What is your coat made of
B: A hundred percent cotton.
A: What about your hat
B: ...
Cotton. It is very soft!
What is your shirt made of
Where was it made
It was made in America.
Presentation
Grammar Focus
Are your shirts made of cotton Yes, they are. And they were made in the US.
What’s the model plane made of It’s made of used wood and glass.
Where is tea produced in China It’s produced in many different areas.
How is tea produced Tea plants are grown on the sides of mountains. When the leaves are ready, they are picked by hand and then are sent for processing.
Active voice: People grow tea in Hangzhou.
Passive voice: Tea is grown (by people) in Hangzhou.
一般现在时的被动语态
Grammar Focus
[探究] 被动语态
1.概念：当主语时动作的承受者时，主语和谓语之间
是被动关系，此时就要用被动语态。
2.结构：be+ 及物动词的过去分词。
[探究] 一般现在时的被动语态
1. 结构： am/is/are+及物动词的过去分词
这种类型的自行车是在北京制造的.
This kind of bike is made in Beijing.
2. 如果强调动作或行为的执行者就用介词by引出。
这只风筝是我爸爸做的。
The kite is made by my father.
3. 一般现在时的被动语态句式结构：
句式 结构
肯定句
否定句
一般疑问句
主语+ am/is/are+及物动词的过去分词（+by）
主语+ am/is/are + not及物动词的过去分词
(+by）
Am/Is/Are+主语+及物动词的过去分词（+by）
The ring is made of silver.
(先改为否定句，再改为一般疑问句)
___________________________.
___________________________
活学活用
The ring is not made of silver
Is the ring made of silver
主动语态和被动语态的转化
1.确定主动句的主语、谓语和宾语
2.把主动句里的宾语变为被动句的主语，若主动句里
的宾语是人称代词，要将宾格变为主格。
3.把谓语变成被动结构“be+动词的过去分词”，但
时态不能改变。
4.把主动语态中的主语放在介词by后作宾语，若主语
是人称代词，应把主格变为宾格。
活学活用
They visit our school every year. (变被动语态)
——————————————————
Our school is visited by them every year.
Complete the sentences with the correct forms of the verbs in brackets.
4a
Children under 18 __________________ (not allow)
to watch this show without their parents.
We _____________ (pay) by the boss on the last
Friday of each month.
aren’t allowed
are paid
3. A: What language ____________ (speak) in Germany
B: Most people speak German, but many can speak
English, too.
4. Most of the earth’s surface ______________ (cover) by
water.
5. The classroom _____________ (clean) by the students
every day.
is spoken
is covered
is cleaned
n.表面；表层
4b
Rewrite the sentences using the passive voice.
1. Farmers plant the tea on the sides of mountains.
The tea is planted on the sides of mountains by farmers.
2. This shop uses the best materials to make dresses.
____________________________________________
The best materials are used by this shop to make dresses.
3. Careless driving causes many traffic accidents.
___________________________________________
4. The postman brings letters and postcards to people’s
homes.
____________________________________________
____________________________________________
5. Our family does not use this silver plate very often.
____________________________________________
____________________________________________
Many traffic accidents are caused by careless driving.
Letters and postcards are brought to people’s homes by the postman.
This silver plate is not used very often by our family./
This silver plate is not used by our family very often.
4c
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, earrings ...
A: What’s your pencil made of
B: It’s made of wood.
A: Where was it made
B: It was made in Shanghai.
n.(分手指的)手套
What’s your pencil made of
It’s made of wood.
Where was it made
It was made in Shanghai. …
How about your gloves Were they made in Beijing
No, they weren’t. They were made in Hangzhou.
What are they made of
They are made of
wool.
1. My friend often sends some nice presents to the poor.
children.(改为被动语态)
Some nice presents _____ often _____ to the poor
children _____ my friend.
2. The monkey is used to help the sick people. (改为主
动语态)
We _____ the monkey ____ ____ the sick people.
are sent
by
Exercises
use
to help
Summary
一般现在时
的被动语态
否定句
一般疑问句
肯定句
结构：
主动语态 被动语态
GOOD JOB