资源简介

(共27张PPT)
Unit 3
Language in use
She can cook.
Can you cook
Yes, I can. / No, I can’t.
Ask and answer
Can you play basketball well
Yes, I can. / No, I can’t.
The girl can dance. Can you dance
They can run really fast.
Can you run fast
No, I can’t.
I can play the piano.
She can dance really well.
We can teach you Chinese!
Can you cook
Yes, I can. / No, I can’t.
Language practice
情态动词can的用法
一、基本用法
1. 表示能力（如体力和脑力方面），意为“能；会”等。例如：
Can you speak English 你会讲英语吗？
Can you play the piano 你会弹钢琴吗？
Grammar
2. 表示请求或允许，多用在口语中，意为“可以；能”等。用于疑问句中用来提出要求，用于否定句表示不允许。例如：
Can I help you 我能帮助你吗？
You can’t play basketball.
你不能玩篮球。
Can you...？“请你……好吗？”表示说话人的请求；
Can I...？“我可以……吗？”用来征求对方是否允许自己做某事。如在句末加上 please一词就显得更有礼貌了。
例如：
Can you help me, please
请你帮助我好吗？
3. 表示可能。例如：
He can be at home now.
他现在可能在家。
The moon can’t always be full.
月亮不可能常圆。
4. 表示怀疑。在表达此意时，只能用于一般疑问句中，带有感彩。例如：
Can it be true 那会是真的吗？
二、句式变化如下：
1. 在变否定句时，直接在can后加上“not”,可缩写成can’t或cannot, 但不能写成cann’t。例如：
He can swim.
→ He can’t swim.
Tony can see the pen on the desk.
→ Tony can not see the pen on the desk.
2. 在变一般疑问句时，直接移到主语前（原主语的首字母改成小写，第一人称应变为第二人称）即可。例如：
I can see an orange on the table.
→ Can you see an orange on the table
其回答可用Yes, OK或Certainly等作肯定回答；用No或Sorry等作否定回答。例如：
—Can you look after my dog, please 你能照看一下我的狗吗？
—OK. 可以。
用Certainly回答。此时语气更为肯定。
—Can I see your piano
我能看看你的钢琴吗？
—Certainly. 当然可以。
Can和be able to的区别: can 能用来表示人或者事物的能力，而be able to只能用来表示人的能力。如：
Energy can move things. (只能用can)
Can和be able to 的比较
Can和be able to的相似点: can和be able to都有表示“能力”的意思。
I can get best score in every match.
我能在每次比赛中得最高分。
I’d love to be able to sing like you.
我要是能像你那样唱歌就好了。
①She can speak English.
她能说英语。
(没有人称形式上的变化)
②Come and help us, if you can.
如果可以，就来帮我们吧。
(通常情况下后接不带to的不定式，有时也不接不定式)
③Shanghai was a place where anyone could start a business.
上海是一个人人都能开始创业的地方。
He couldn’t be a bad man.
他不大可能是坏人。
(could可用作can的过去式，表示某人有能力或某事可能发生)
④By climbing on the chair he was able to reach the window.
他爬到椅子上就够到窗户了。
(can没有过去时态，但可以用was/were able to，指某人实际做了某事)
⑤She’ll be able to walk soon.
她很快就可以走路了。
(can没有将来时，但可以用will be able to，指某人某人将来有能力或某事将来可能发生，时间比较久)
⑥I haven’t been able to phone my parents yet.
我还没能打电话给我父母。
(can没有完成时态，但可以用 has/have been able to表示)
Student Activity Student 1 Student 2
fly a kite
play the piano
cook
play table tennis
ride a bike
Work in pairs. Add two or three more activities to the list.
Now write questions for each activity.
Can you fly a kite
Work with another pair. Ask and answer the questions you wrote in Activity 1.
— Can you fly a kite
— Yes, I can. / No, I can’t.
Now give a report of your questions and answers to the rest of the class.
Four students can fly a kite…
Complete the sentences with can or can’t.
1. — ________ you swim
— Yes, but I _______ swim well.
2. — Are you coming with us
— Sorry, I ______ ride a bike.
Can
can’t
can’t
3. — What ______ the new
cleaning monitor do for us
— He ______ make our classroom tidy.
4. — ________ you play the piano for us
— Sorry, I _______ play the piano, but I
_______ sing for you.
can
can
Can
can’t
can
Around the world
Languages
There are six official languages of the United Nations. Can you speak these languages Can you write them
Chinese 　　你好！
English Hello!
Spanish iHola!
Arabic
Russian
French Bonjour!
Making a poster for a club
Work in groups of three or four. Talk about a new school club.
Choose a name for the club.
Choose a day and time for the club.
Ask people to join the club.
Can you sing
Can you play the piano
Come and join the Music Club!
Mondays 4: 30 pm
The Music Room
Music Club
1. Make a poster. Draw a picture for
your club.
2. Show and talk about your poster
with your classmate.
Homework

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