unit5 Abilities grammar 课件（牛津译林版七下）

(共21张PPT)
Grammar
学习目标：
学会用“can”和“could”表达现在和过去的能力
学会用“can”和“could”表达现在和过去的可能性
学会由“What”和“How”引导的感叹句
Learning the following:
Words: snow row forget ski racket
Phrases: in the past row a boat
Sentences: We can/cannot/can’t dance.
We could/ could not/ couldn’t dance in the past.
We can/ cannot/ can’t help.
We could/could not/ couldn’t help.
What a beautiful flower!
What an interesting book!
What beautiful flowers!
What interesting books!
What nice music!
How nice!
What can they do
What could they do in the past
We use ‘can’ to say that we are able to
do something. We use ‘could’ to say that
we were able to do something in the past.
A
go skiing
I can go skiing. Can you go skiing
Yes, I can. No, I can’t.
row a boat
I can row a boat now,
but I couldn’t row a boat last
year. What about you
I can row it now.
I couldn’t row it last year.
A: Can you ride a bike
B: Yes, I can. No, I can’t.
A: Could you ride a bike 5 years ago
B: Yes, I could. /No, I couldn’t.
We use ‘can’ or ‘could’ to say that something is possible. ‘Could’ talks about a smaller chance than ‘can’. When we say that something was possible in the past, we only use ‘could’. However, we cannot use ‘can’/ ‘could’ to talk about the chances that something will certainly happen in the future.
B
Using ‘can’ / ‘could’ to talk about possibility
It’s a rainy day today,
we can’t play basketball outside.
It was a nice day yesterday,
so we could go hiking.
What do the sentences talk about, ability or possibility
The goldfish can live in water. ( )
I left my key at school. I couldn’t open the door. ( )
It will be warm tomorrow, so we can wear T-shirts. ( )
We can’t live without air or water. ( )
Jim can do well in football.( )
ability
possibility
possibility
possibility
ability
is able to
Complete the conversation. Using the table
in Part A1.
Shirley: (1)_____ Sandy (2)_____ a boat now
Amy: (3)_____, she (4)_____.
Shirley: (5)_____ Simon (6)_____ a bicycle last year
Amy: (7)_____, he (8)_____.
Shirley: (9)_____ Millie (10)_____ now
Can
row
Yes
can
Could
ride
No
couldn’t
Can
swim
Amy: (11)_____, she (12)_____.
Shirley: (13)_____ Daniel and Peter (14)_____ tennis now
Amy: (15)_____, they (16)_____.
Shirley: (17)_____ you (18)__________ last year
Amy: (19)_____, I (20)________. But I practised very hard and now it’s easy. I can teach you.
Yes
can
Can
play
Yes
can
Could
fly a kite
No
couldn’t
用can, cannot, could, could not填空。
It is snowing in Canada. We _____ go skiing there.
The swimming pool does not open today. We _______________ go swimming.
We _________________ fly kites yesterday because it rained.
We _____ play tennis yesterday because we had our tennis rackets.
We ___________________ play football because Simon forgot to bring a football.
can
can not/can’t
could not/couldn’t
could
could not/couldn’t
感叹的中心落在名词上，用what引导感叹句 What + a/an + 形容词 + 主语 + 谓语 ！ What + 形容词 + 不可数名词 + 主语 + 谓语 ！ What + 形容词 + 可数名词复数+ 主语 + 谓语 ！ What a beautiful house it is ! What clean water it is ! What lovely girls they are !
感叹的中心落在形容词或副词上,或整个句子，用how引导感叹句 How + 形容词或副词 + 主语 + 谓语 ！ How blue the sky is ! How fast he swims ! How pretty a flower this is!
感叹句通常用来表示快乐、痛苦、惊异等强烈的感彩。
C
What a big pencil box!
What an interesting book!
What high mountains!
What a nice paper!
What + 名词短语！
What a short pencil!
What beautiful pictures!
What delicious bread!
What an amazing story!
How big!
How interesting!
How high!
How nice!
How + 形容词！
How short!
How beautiful!
How delicious!
How amazing!
What 与How 大转换
1. What a pretty girl she is!
_______ _______ the girl is!
2. How difficult the questions are!
_________ ________ ________ they are.
3. How big the factory is!
_______ _______ big factory _____ ____!
4.What a clever boy!
_______ _______ the boy _______!
5. How tall the trees are!
_______ tall trees ______ ______!
How pretty
What difficult questions
What a
it is
How clever
is
What
they are
6. What interesting books they are!
________ _______ the books ________!
7. How funny the girl is!
________ _______ funny girl ____ _____!
8. How old the man is!
______ _______ old man ______ _____!
9. What nice books they are!
_____ ______ the books ________!
10. How amazing the building is!
_____ _____amazing building ____ ____!
How interesting
are
What a
she is
What an
he is
How nice
are
What an
it is
Homework
完成课本上关于can和could以及由How或What引导的感叹句的习题。
写一篇关于你自己的短文，要用上can和could。