人教版七年级下册 Unit 1 Can you play the guitar? Grammar Focus-3c课件(共23张PPT)

(共23张PPT)
人教新目标Go For It七年级英语下册
Unit1 Can you play the guitarUnit 1 Can you play the guitar Grammar Focus-3c
Wise men learn by other men's mistakes; fools by their own
情态动词can
1,情态动词can后跟动词原形
Mary draws every day.
Mary can draw.
2,有can 之句变否定，can变can’t
Mary can draw.(变否定句)
Mary can’t draw.
3,有can 之句变一般，can 提前，can问can 答
Mary can draw.(变一般疑问句)
Can Mary draw Yes, she can.
Wise men learn by other men's mistakes; fools by their own
Can you .......
Yes, I can.
No, I can’t.
play the guitar
play chess
speak English
sing
draw
dance
swim
Review
Wise men learn by other men's mistakes; fools by their own
dance
sing
draw
swim
play chess
speak English
play the guitar
Can you
Can she
Can he
Yes, I can./No, I can’t.
Yes, she can./No,she can’t.
Yes, he can./No, he can’t.
Review
Wise men learn by other men's mistakes; fools by their own
sing
dance
swim
draw
play chess
play the guitar
She / He / They can...
Wise men learn by other men's mistakes; fools by their own
I can
I can’t
…
…
but
Say Your Abilities
Wise men learn by other men's mistakes; fools by their own
I can
I can’t
…
…
but
Say Your Abilities
Wise men learn by other men's mistakes; fools by their own
我会唱歌/跳舞/游泳/弹吉他/下棋。
我们不会说英语/弹钢琴/打网球。
你会踢足球吗？
是的，我会。 不，我不会。
他会打牌吗？
是的，他会。不，他不会。
他们会画画吗？
是的，他们会。不，他们不会。
6. 你们会什么？
I can sing/dance/swim/play the guitar.
6. What can they do
5. Can they draw/paint
Yes, they can. No , they can’t.
Can he play cards
Yes, he can. No, he can’t.
3. Can you play soccer
Yes, I can. No, I can’t.
2. We can’t/can not speak English/ play the piano/play tennis.
Have a think:
can后的动词形式有何特点？
can随人称和数的变化而变化吗？
can的否定形式是什么样的？有缩略形式吗？
can在一般疑问句和特殊疑问句中需要借助助动词吗？
can用于肯定句，否定句，一般疑问句，特殊疑问句中的结构是什么。
Wise men learn by other men's mistakes; fools by their own
情态动词 can
1.肯定句：
2.否定句：
3.一般疑问句
以及肯定回答/否定回答
4. 特殊疑问句
主语+can+动词原型
2. 主语+can’t/can not +动词原形
4. 特殊疑问词+can+ 主语+动词原形+其他
3. Can + 主语 +动词原形+其他
Yes, 主语+can. No,主语 +can’t.
Wise men learn by other men's mistakes; fools by their own
be good at (doing) sth…擅长于…
=do well in …
他擅长说英语。
He ___ ____ at _______ English.
=He ____ well ___ speaking English.
他们擅长数学。
They ____ good ____ math.
=They ______ ______ _____ math.
is good 　 speaking
does in
are at
do well in
Wise men learn by other men's mistakes; fools by their own
swimming club
B: He wants to…the … .
A: What club does he want…
A: What is he good at？
B: He is good at…
Wise men learn by other men's mistakes; fools by their own
can后的动词形式有什么特点？
can的否定形式是什么样的？
有缩略形式吗？
can随人称变化而变化吗？
can在一般疑问句和特殊疑问句中需要借助助动词吗？
自主研讨
Wise men learn by other men's mistakes; fools by their own
Can you swim Yes, I can./No,I can’t.
Can he play chess Yes, he can./ No,he can’t.
Can you and Tom play chess Yes, we can./ No,we can’t.
Can Jane and Jill swim Yes, they can./No,they can’t.
What can you do I can dance./I can’t sing.
What club do you want to join We want to join the chess club.
Grammar Focus
Talk about the usage of “can”
Can+主语+动词原形？
肯定回答：Yes,主语+can
No,主语+can’t.
can’t=can not
Wise men learn by other men's mistakes; fools by their own
Can you summarize the usage of can
can后的动词形式有什么特点？
can后用动词原形。
Wise men learn by other men's mistakes; fools by their own
can随人称变化而变化吗？
can没有人称的变化。不管主语是什么人称， can及其后面的动词不会变化。
答疑解惑
Wise men learn by other men's mistakes; fools by their own
can的否定形式是什么样的？
can的否定形式是在其后直接加not, 即can not, 可缩略成can’t或cannot。
答疑解惑
Wise men learn by other men's mistakes; fools by their own
can在一般疑问句和特殊疑问句中需要借助助动词吗？
不需要借助助动词，应将can直接提前，变为疑问语序。
答疑解惑
Wise men learn by other men's mistakes; fools by their own
情态动词的共同属性：
1.后加动词原形；
2.没有人称的变化；
3.一般可以直接提到句首构成一般疑问句。
你还记得哪些情态动词吗？
Wise men learn by other men's mistakes; fools by their own
单元同步语法精练
一、单项选择
1．—Can I swim in the river, Grandpa —________. It is dangerous(危险的)．
A．Yes, you can B．No, you can't
C．Yes, you need D．No, you needn't
B
2．Susan is good at English and she can ________ some English songs.
A．sing B．singing
C．to sing D．to singing
A
Wise men learn by other men's mistakes; fools by their own
3．Students ________ enjoy the colorful school life if they study at home instead of going
to school.
A．mustn't B．can't C．must D．can
B
4．—Jack, ________ you ride a bike —Yes, I can.
A．can B．may C．need D．must
A
Wise men learn by other men's mistakes; fools by their own
5．I ________ follow(听懂) you. Would you please repeat it
A．can't B．mustn't C．needn't D．shouldn't
A
6．You ________ watch TV, but you have to clean the room first.
A．must B．can C．can't D．mustn't
7．—Mom, may I go out to play football for an hour
—No, you ________. The air outside is not very clean.
A．can‘t B．needn’t C．Couldn’t D．mustn't
B
A
Wise men learn by other men's mistakes; fools by their own
二、按要求改写句子
1．My father can speak English well.(改为一般疑问句)
________ ________ father________ English well
2．She can draw．(对画线部分提问)
________ ________ she ________？
3．Can Lin Fang and Li Mei play chess？(作肯定回答)
________，________ ________.
4．Can Kate's sister play the violin？(作否定回答)
________，________ ________.
5．Li Chen can't sing. Li Chen can't swim.(合并成一个句子)
Li Chen________ sing ________ swim.
Can your
speak
What can
do
Yes they can
No she can't
can't
or
Wise men learn by other men's mistakes; fools by their own
Can 的用法
属性
can是情态动词，表示能力、意愿等
1
时态
can后跟动词原形，并且它不随主语人称的变化而变化
2
变否定
变否定句直接在can后加“not”。eg. I can not dance.
3
变一般疑问句
变一般疑问句直接把can提前。 eg. Can you dance
4
变特殊疑问句
What+can+人+do...
5
task 6
Summary
Wise men learn by other men's mistakes; fools by their own