(共22张PPT)
Unit5 What are the shirts made of
Section A Grammar Focus 4a-4c
一、语言能力
能够在不同语境中，通过观察归纳，同伴合作等方式，正确得出被动语
态的基本结构，理解和使用被动语态的一般现在时，并能将主动语态和
被动语态进行自由转换。
二、学习能力
能够掌握一般现在时的被动语态，包含定义，构成，句式以及和主动句
的相互转换等。回顾动词过去分词的不规则变化，使学生能够准确书写
含被动语态的句子。
三、文化意识
能够在讨论茶的语境中，了解茶的种类和生产过程，拓宽知识面，提升
学生民族自豪感。
四、思维品质
通过观察归纳小组合作等方式，探究被动语态的一般现在时结构，提高
思维的逻辑性，加强语言表达的准确性。
Let’s enjoy the vedio.
Tea plants ______
______on the sides of mountains.
are
grown
When the leaves are ready,They_________ by hand.
are picked
They ________
for processing.
are sent
The tea
_______.
It _______ to
many different
countries and places
around China.
is sent
is packed
How is tea produced
Read and answer.
BY YUSHEN
观察总结
Tea plants are grown on the sides of mountains.
They are picked by hand.
They are sent for processing.
The tea is packed.
It is sent to many different countries.
被动语态：主语是动作的承受者。
构成：be+pp(过去分词)
Active voice: People grow tea in Hangzhou.
Passive voice: Tea is grown (by people) in Hangzhou.
主动语态与被动语态：
英语动词有两种语态，即________与_________
主动语态表示主语是动作的执行者;
(即主语自己做)
被动语态表示主语是动作的承受者。
(即主语被做)
主动语态
被动语态
BY YUSHEN
观察总结
过去分词的构成
一般情况在动词原形后加-ed
01
02
03
04
以不发音e结尾的加
-d
以辅音加y结尾的，去y变i加-ed
以重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加-ed。
watch---watched
produce---produced
study---studied
stop---stopped
动词过去分词的不规则变化：________________________________
cut → _______ → _______
cost → _______ → _______
hit → _______ → _______
put → _______ → _______
read →_______ → _______
hurt → ________ → ________
cut
cut
cost
cost
hit
hit
put
put
read
read
hurt
hurt
与该动词的原形及过去式相同
AAA型
观察总结
动词过去分词的不规则变化：_________________________________
become → _______ → _______
come → _______ → _______
run → _______ → _______
became
become
came
come
ran
run
与该动词的原形相同
ABA型
观察总结
动词过去分词的不规则变化：_________________________
meet → _______ → _______
keep → _______ → _______
sleep → _______ → _______
make → _______ → _______
bring → _______ → _______
buy →_______ → _______
think → ________ → ________
teach → ________ → ________
met
met
kept
kept
slept
slept
made
made
brought
brought
bought
bought
thought
thought
taught
taught
与该动词的过去式相同
ABB型
观察总结
动词过去分词的不规则变化：_________________________________
begin → _______ → _______
speak → _______ → _______
choose → _______ → _______
forget → _______ → _______
drive → _______ → _______
write → _______ → _______
break → _______ → _______
eat → _______ → ________
began
begun
spoke
spoken
chose
chosen
forgot
forgotten
drove
driven
wrote
written
broke
broken
ate
eaten
与该动词的原形与过去式都不同
ABC型
观察总结
动词过去分词的变化与动词过去式相同，除特殊外
1.规则动词的过去分词：
1)一般情况在动词原形后加-ed
watch---watched
2)以不发音e结尾的加-d
practice---practiced
3)以辅音加y结尾的，去y变i加-ed
study---studied
4)以重读闭音节结尾，末尾只有一个辅音字母，先双写该
辅音字母，再加-ed
stop---stopped
drop---dropped
Are your shirts made of cotton 你的衬衫是由棉做成的吗？
Yes, they are. And they were made in the US.
是的，他们是在美国制造。
What’s the model plane made of 这模型飞机是由什么制造的？ It’s made of used wood and glass.
它是由用过的木头和草制作的
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.
Grammar Focus
被动语态一般疑问句：be+主语+过去分词+其他？
被动语态特殊疑问句：
特殊疑问词+be+主语+过去分词+其他？
否定句：主语+be not+动词过去分词+其他
被动语态的结构(一般现在时)
肯定：主＋am/is/are + done + 其他.
否定：主＋am/is/are + not + done + 其他.
一般疑问：Am/Is/Are + 主 + done + 其他？
肯定回答：Yes, 主 + am/is/are.
否定回答：No, 主 + am/is/are not.
特殊疑问句：特殊疑问词+am/is/are + 主 + ----------------- done + 其他？
观察总结
1、把主动句的宾语用作被动句的主语.（宾变主）
2、把主动句的谓语动词改为“be+过去分词”的形式, 作被动句的谓语。 (谓语动词变被动)
3、把主动句的主语放到介词by后面组成的介词短语.
People grow apples in North China.
Apples are grown (by people) in North China.
4、其它部分放后面.
观察总结
主动变被动解题步骤:
1. 找宾语 ----即动作的承受者
2. 判断新主语的单复数 ----即be动词的单复数
3. 根据原动词的时态 ----即be动词的时态
4. 修改谓语的时态 ----即原句动词改为过去分词
5. 原句主语 后移 变为by+宾格/名词
They make shoes in that factory.
Shoes
are
were
made
by them in that factory.
Complete the sentences with the correct forms of the verbs in brackets.
Children under 18 __________________ (not allow) 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.
4. Most of the earth’s surface ______________ (cover) by water.
5. The classroom _____________ (clean) by the students every day.
aren’t allowed
are paid
is spoken
is covered
is cleaned
允许
支付
表面
be (not) allowed to do sth. (不)被允许做某事
allow sb. to do sth. 允许某人做某事
allow doing sth. 允许做某事。
4a
Rewrite the sentences using the passive voice.
4b
Farmers plant the tea on the sides of mountains.
_____________________________________________
2. This shop uses the best materials 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.
_____________________________________________
The tea is planted on the sides of mountains by farmers.
The best materials are used to make dresses by this shop.
Many traffic accidents are caused by careless driving.
Letters and postcards are brought to people’s homes.
This silver plate is not used very often in our family.
引起许多交通事故
Applying the rules
Complete the introduction with the correct forms of the verbs.
China is famous for tea. Tea ______________( produce) in many different places in China. For example, Anhua is known for their tea. As far as we know, tea plants ______________(grow) on the sides of mountains* When the leaves are ready, they_____________(pick) by hand.Then tea leaves ______________(send) for processing. The tea ______________(pack), and finally it ______________(send) to many different countries and places around China. It seems that Chinese tea ______________( drink) by more and more people in the world.
is produced
are grown
are picked
are sent
is packed
is sent
is drunk
BY YUSHEN
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...
A: What's your pencil made of
B: It's made of wood.
A: Where was it made
B: It was made in Shanghai.
Pair work:Make a dialog.Describe the following pictures with as many sentences with passive voice in the present tenses as possible.
A:Is the tea made in Anhua
B: ________________________
A:Where ______________(grow)
B: ________________________
A:How ______________(produce)
B: ________________________
A: Why is tea famous
B: ________________________
Thank you for listening
