Unit 3 Computers Grammar 课件 (共37张PPT)

(共37张PPT)
Unit 1 Computers
　 Grammar
牛津深圳版　八年级上册
What can we use a computer to do
Operate railways
shopping online
play computer games
Listen to music
send e-mails
We can use it to…….
have a meeting on line
fly planes and spaceship
1
课堂导入
Linda
Nancy
Kate
Linda is __________ girl of the three.
Nance is ___________ than Kate.
the tallest
taller
Look and say
Who is taller
Who is the tallest
￥ 50.00
￥ 100.00
￥ 150.00
The purple bag is __________________ one of all the bags.
The green bag is ____________ than the bule one.
more expensive
the most expensive
Which is more expensive
Which is the most expensive
Which picture is better
Which picture is the best picture of all.
1
2
3
When we compare two people or things，we can use the comparative of adjectives .We form the comparative of adjectives like this：
Adjectives Comparative of adjectives
cheap cheaper
tall taller
interesting more interesting
expensive more expensive
A The comparative of adjectives
1
课堂活动
How do we form the comparative of adjectives
-er
Work out the rule
To form the comparative of adjectives, we often add__________ to short adjectives and use __________with long adjectives.
We often use________ after the comparative of adjectives..
more
than
比较级形式 例词
单音节形容词 大多数单音节形容词 + -er high → higher
small → smaller
以-e结尾 + -r large → larger
wide → wider
一个元音 + 一个辅音 双写辅音字母，再加-er big → bigger
hot → hotter
双音节形容词 以-y或-ly结尾 去掉y，再加-ier happy → happier
silly → sillier
以非重读元音、/l/或/R(r)/结尾 + -er(-r) clever → cleverer
simple → simpler
以-ful，-less，-ed，-ing结尾 more + 形容词原级 careful→ more careful
boring → more boring
多音节 形容词 含三个或三个以上音节 more + 形容词原级 difficult →more difficult
popular→ more popular
形容词和副词比较级的用法
1.Who runs faster, he or she
2.He runs faster than she.
3.He runs much faster than she.
4.He becomes healthier and healthier.
5.The more you exercise, the healthier you will be.
6.She is less healthy than he.
1. 表示两者之间的选择,
可用“Which/Who … + 比较，…or… ”.
2. 表示两者之间的比较，通常用连词 than 引导，表示“更······一些”．
3. much/far/a lot, even, still, a little/a bit … 修饰比较级,表示程度.
Who runs faster, he or she
He runs faster than she.
He runs much faster than she.
4. “比较级+and+比较级”表示“越来越……”
5. “the+比较级 , the + 比较级”表示“ 越…, 越 …”
He becomes healthier and healthier.
The more you exercise, the healthier you will be.
Shanghai is becoming more and more modern.
6. 表示不及另一方时，用“less+原级+than…”
　 (双音节和多音节词)
She is less healthy than he.
He is healthier than she.
Salesman：Can I help you , sir？
David：Yes, I need a suitcase .Can you tell me about these two
Salesman：Sure. The red one costs ￥2,500, and it’s made of leather.
David： I see . The red one is_______________ than the black one .
What about the weight Which one is ________
Complete the conversation below and on page 40 with the comparative of the adjectives from the box.
more expensive
lighter
big expensive heavy light small
Salesman： The black one. It’s made of plastic. Try them, sir.
David： You’re right . The red one is _________ than the black
one , and it’s _________than the black one.
Salesman：Do you have a lot of things to carry
David：Yes, I do . I’ll have the black one because it’s _______
than the red one.
Salesman： Thank you very much , sir.
heavier
bigger
smaller
big expensive heavy light small
Pair work
(country/big)
Canada
China
China is bigger than Canada.
Which country is bigger, Canada or China
Hong Kong
Shanghai
(city/big)
the Yellow River
the Yangtze River
(river/long)
(island/large)
Hainan Island
Taiwan Island
(mountain/high)
Mountain Tai
Yellow Mountain
When we compare more than two people or things, we use the superlative of adjectives.
Grammar B The superlative of adjectives
.
The red laptop is the smallest among/of the three.
We form the superlative of adjectives like this :
Adjectives Superlative of adjectives
high the highest
careful the most careful
interesting the most interesting
most
the
-est
最高级形式 例词
单音节形容词 大多数单音节 形容词 + -est high →highest
small →smallest
以-e结尾 + -st large →largest
wide →widest
一个元音 + 一个辅音 双写辅音字母，再加-est big →biggest
hot → hottest
双音节形容词 以-y或-ly结尾 去掉y，再加-iest happy → happiest
silly → silliest
以非重读元音、 /l/或/R(r)/结尾 + -est(-st) clever → cleverest
simple → simplest
以-ful，-less， -ed，-ing结尾 most+形容词原级 careful → most careful
boring → most boring
多音节形容词 含三个或三个以上音节 most+形容词原级 difficult → most difficult
popular → most popular
1.表示三者或三者以上比较,可用
“Which/Who …”+最高级,…,…or … ”表示.
2. 最高级+of/among (同类比较)
in… (范围比较)
形容词和副词的最高级的用法
Who is the tallest, Tom , Mike , or Jack
Tom is the tallest of the three.
Tom runs (the) fastest in our class.
4.one of +形容词最高级+名词复数表示“最… 之一”
3. 序数词修饰最高级
形容词和副词的最高级的用法
Mike is the second tallest student in our class.
Jack is one of the tallest students in our class.
B1 David is shopping for a camera. Look at the photos and write the letter of the correct model after each statement.
￥3,589
Made in 2010
350 g
109mm x 78mm x 46mm
￥2,530
Made in 2012
170 g
99.8mm x 56.4mm x 24.5mm
￥1,700
Made in 2011
183 g
103mm x 57mm x 27.3mm
a
b
c
David: I’d like to see some of your cameras.
Salesman: Certainly. This is the most
expensive model.
This is the cheapest model.
This is the newest and lightest model.
(1)
______
a
(2)______
c
(3)______
b
B2 David told his friend Tony about his shopping plete David’s sentences with the superlative of the adjectives from the box.
Tony: Did they show you any cameras
David: Yes. The (1) ________ model is (2) _________________________.
The (3)______________model costs (4)_________.
The (5)_______ model was made in (6)______.
The (7)_______ model weighs (8)_______.
smallest
99.8mm x 56.4mm x 24.5mm
most expensive
￥3,589
2010
oldest
lightest
170g
expensive light old small
3
课堂小结
1. We have learned the usage of the comparative and superlative of adjectives
2. We have understood to sum up some language rules
Your classroom is _________ (wide) and _________
(bright) than ours.
2. There are _______ (few) hours of sunlight a day in winter than in summer.
3. They may be _______ (good) at doing their jobs than doctors.
4. Summer is __________ (hot) season of the year.
5. We’ve got as ________ (many) books as we need.
一、用比较级或最高级完成句子。
wider
brighter
fewer
better
the hottest
many
4
课堂练习
6. He is ________ (young) than his two sisters.
7. The weather is getting _______ (warm) and
________ (warm) .
8. I like this one. It is ________ (cheap) than others.
9.This is __________ (large) apple I have ever seen.
10. It is _______________ (delicious) of all the food.
younger
warmer
cheaper
the largest
the most delicious
warmer
二、选择题
1. Julie takes good care of the family dog. She is ________ than her brother.
A. patient B. more patient
C. most patient D. the most patient
2. ----Shaoyang has changed a lot in the past few years.
-----Yes. It is getting_________.
A.clean B.cleaner C.cleanest D. the cleanest
3. ----He is planning to walk on the wings of a flying plane.
----What I have never heard of ______idea before.
A. a crazier B.the crazier C. a craziest D.the craziest
4. ---Paul,do you prefer weekdays or weekends
----Weekdays,of course.I'm _______on weekends.
A.busy B.much busier C.more busier D.the busiest
5. Taking a subway in Chengdu is much _______than taking a taxi.
A.cheap B.cheaper C.cheapest D. the cheapest
6. Sam is 11 years old.Peter is 16 years old. Peter is 5 years ______than Sam.
A. older B.shorter C.newer D.longer
7. ----Frank has changed a lot, hasn't he
----Yes. He is much ________because he exercises every day.
A. strong B. stronger
C. strongest D. the strongest
8. Shanghai has a ______ population than that in many other cities.
A. older B. shorter C. newer D. longer
谢谢
21世纪教育网（www.21cnjy.com)
中小学教育资源网站
兼职招聘：
https://www.21cnjy.com/recruitment/home/admin