【新课标】Unit 3 Computers Period 3 Grammar课件

(共40张PPT)
Unit 3 Computers
Period 3 Grammar
牛津深圳·广州版八年级上册
Learning objectives
1.Knowledge objectives:
Understand the concept, usage and difference of comparative and superlative adjectives.
2.Skill objectives:
①Students should master the concepts and formation methods of comparative and superlative adjectives.
②Students can use comparative adjectives and superlatives to compare things in specific situational tasks.
③Students can sum up the comparative and superlative grammatical rules of adjectives.
④Students can use the comparative and superlative adjectives to simply describe things and communicate.
⑤Cultivate students' spirit of cooperation in the process of communication.
3.Emotional objectives:
Learn to use the comparative and superlative adjectives correctly, cultivate their confidence in learning, and stimulate their interest in learning.
4.Thinking capacity(思维品质)
Develop students' ability to think independently and express their own opinions.
Lead in
His bag is bigger than mine.
他的书包比我的大。
His bag is the biggest one among his classmates.
他的书包在同学中是最大的。
Which bag is bigger
Which bag is the biggest
Lead in
Lily's hair is ______ than Mary's.
longer
Lily
Mary
Annie
Annie has the _______ hair.
longest
Look at the picture and fill in the blanks.
Free talk
How do we form the comparative of adjectives
The first computers were bigger than cars, but are becoming smaller and better.
Look at the underlined words in the following sentences and talk about their meanings
and functions.
How do we form the comparative of adjectives
Computers can calculate at a faster speed than we can and almost never give wrong answers.
Look at the underlined words in the following sentences and talk about their meanings
and functions.
Free talk
However,one day computers may be able to do a better job than human beings.
How do we form the comparative of adjectives
Look at the underlined words in the following sentences and talk about their meanings
and functions.
Free talk
For example,they may be better than doctors at doing their job.
How do we form the comparative of adjectives
Look at the underlined words in the following sentences and talk about their meanings
and functions.
Free talk
How do we form the comparative of adjectives
Computers may change our lives,but will they made them better
Look at the underlined words in the following sentences and talk about their meanings and functions.
Free talk
3.big → bigger → biggest hot → hotter → hottest red→ redder → reddest
一、Look at the positive, comparative and superlative forms of adjectives. Look for their changing rules.
1.short → shorter → shortest great → greater → greatest small → smaller → smallest
2.wide → wider → widest large → larger → largest able → abler → ablest
4.happy → happier → happiest easy → easier → easiest heavy → heavier → heaviest
Grammar
Look at the positive, comparative and superlative forms of adjectives. Look for their changing rules.
5.clever → cleverer → cleverest narrow → narrower → narrowest
6.beautiful → more beautiful → most beautiful interesting → more interesting → most interesting
7.good/well → better → best bad /ill → worse → worst old → older(elder) → oldest(eldest)
Grammar
Grammar
二、形容词的比较级和最高级
英语中的形容词常用三种形式来表达事物的等级差别，分别是原级、比较级和最高级。大部分形容词的比较级和最高级是通过词尾变化来实现的，这些属于规则变化，但也有少数是不规则的。
1.规则变化
构成 原级→比较级→最高级
单音节词一般在词尾加-er -est long→longer→longest
以不发音的e结尾时，在词尾加-r、-st nice→nicer→ nicest
以“辅音字母+y”结尾的词,变y为i,再加-er,-est happy → happier→happiest
构成 原级→比较级→最高级
末尾只有一个 辅音字母结尾的重读闭音节词，双写这一辅音字母再加-er,-est(“辅元辅”结构) big → bigger → biggest
多音节和部分双音节词，在原级前加more、most interesting → more interesting→most interesting
少数以-er、-le为词尾的形容词有两种变化方式 clever→cleverer/ more clever→ cleverest most clever
Grammar
原级 比较级 最高级
good/well(身体健康的) better best
bad worse worst
many/ much more most
little less least
far farther farthest
old older(较老的) oldest
elder(较为年长的) eldest
Grammar
2.不规则变化
结构
同级比较 肯定句: as+形容词原级+as 和......一样......
否定句: not as/so +形容词原级+as 和......不一样....../......不如......
比较级 甲+be+形容词比较级+than+乙 甲比乙......
表示一方随另一方程度的变化而变化时，用"the+比较级( +主语+谓语)，the+比较比较级(+主语+谓语)”结构 越...... ,越......
“特殊疑问词+be+比较级，甲或乙” 甲或乙哪一个更......
最高级 “甲+be+the+最高级+表示范围的短语或从句” 甲是......中最......的
“特殊疑问词+be+the+最高级,甲,乙或丙” 甲，乙或丙哪一个最......
三、比较级基本句型
Grammar
1.Who/Which+be+比较级，A or B
Who is taller, Tom or John
谁更高，汤姆还是约翰？
A
B
四、比较级常用句型
Tom
John
Grammar
2. 主语 + be + the比较级+ of the two. (两个之中比较......的那一个，......包含在两个之中)
Tom is the taller of the two.
汤姆是两个人中较高的。
= Tom is taller than the other boy.
四、比较级常用句型
Tom
John
Grammar
3. much/ a lot/ even/ far +比较级
A computer is much more expensive
than a bicycle.
计算机比自行车贵多了。
Grammar
四、比较级常用句型
4.“The+ 形容词比较级...... the+形容词比较级......”,表示“ 越......就越......”。
The more you study, the more you know.
你学的越多，就知道的越多。
Grammar
四、比较级常用句型
5.形容词比较级+ and +形容词比较级表示“越来越......”。
The computer is cheaper and cheaper.
计算机越来越便宜。
Grammar
四、比较级常用句型
1.最高级用于三者或三者以上的比较，表示在某一范围内或某类人物中“最……”。“主语+谓语动词+the+形容词最高级+(单数名词)+in／of短语”。
Who is the strongest of the four boys
谁是那四个男孩中最强壮的 　
Grammar
五、最高级常用句型
She is one of the most beautiful girls in the school.
她是学校里最漂亮的女孩之一。
3.“主语+谓语动词+one of the+最高级+复数名词+in／of短语”表示“……
是最……之一”。
Grammar
五、最高级常用句型
2.the+序数词+形容词最高级+名词+ in/of…“第几最......”。
The Yellow River is the second longest
river in China.
黄河是中国第二大河。
Grammar
五、最高级常用句型
Which is the heaviest，an elephant, a horse
or a cow
大象、马和牛哪一个最重？
4.“特殊疑问词+谓语动词+the+最高级+A，B，or C ”用于三者或三者以
上的比较。
A
B
C
Grammar
五、最高级常用句型
●To form the superlative of adjectives, we often add_____short adjectives and _____
use with long adjectives.
●We usually use____ in front of the superlative of adjectives.
We form the superlative of adjectives like this:
Adjectives Superlative of adjectives
high the highest
careful the most careful
interesting the most interesting
Work out the rule
Grammar
-est
most
the
Grammar
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
●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.
Work out the rule
-er
more
than
Exercise
Salesman: Can 1 help you, sir
David:Yes, I need a suitcase. Can you tell me about these two
Salesman:Sure. The red one costs Y2,500, and it's made of leather.
David:I see.The red one is(1)_______________ than the black one.
What about the weight Which one is(2)_______
Salesman: The black one. It's made of plastic. Try them, sir.
Complete the conversation below and on pose 40 with the comparative of the adjectives from the box.
big expensive heavy light small
more expensive
lighter
B The superlative of adjectives When we compare more than two people or things, we use the superlative of adjectives.
The red laptop is the smallest among the three.
|
Grammar
Writing
B1 David is shopping for a camera. Look at the photos and
write the letter of the correct model after each statement.
David:
I'd like to see some of your cameras.
Salesman:
Certainly. This is the most expensive model. (1)________________
This is the cheapest model. (2)________________
This is the newest and lightest model. (3)________________
Grammar
a
c
b
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)__________________________________.
B2 David told his friend Tony about his shopping plete David's sentences with the superlative of the adjectives from the box.
expensive light old small
smallest
99.8mnx56.4mmx 24.5mn
Grammar
most expensive
3589
oldest
2010
lightest
170g
Exercise
一.单项选择题
1.(2020四川泸州中考)——Let's go to another restaurant instead.
——It's not necessary. The food here is ______ than before.
A.delicious B. less delicious C.much delicious D.more delicious
2.(2021广东华南师大附中期中)Of all the students in our class, Jack is______.
A.stronger B.strongest C.the strongest
3.(2020贵州安顺中考)If we are interested in something, our brain is______and it is also easier for us to pay attention to it for a long time.
A.active B.more active C. the most active
4.Flying kites outside _____ a sunny day ______ interesting than playing chess
A. on; is far more B. in: is much C. on; are much more . D. in; are much
5. The lady is already 50, but she looks_____than she really is.
A. young B. much younger C. more younger D. more young
D
D
B
B
A
Exercise
1.看那两个男孩,小明是两个当中较高的那个。
Look at the two boys. Xiaoming is ___________ the two.
2.现代火车比汽车快得多。
A modern train is ___________ than a car.
3.我们的国家变得越来越美丽。
Our country is becoming ________________________ .
4.最古老的一幢房子在一场大火中被烧毁了。
One of _________________ has been burnt in a fire.
5.巴黎圣母院，世界上最著名的地方之一，于2019年4月15日被焚毁。
Notre Dame de Paris (巴黎圣母院),one of______________ places in the world, got burnt on April,15th, 2019.
the taller of
much faster
more and more beautiful
二.根据中文含义填空
the oldest houses
the best-known
Pair work
1.全班同学结对练习，使用形容词最高级进行对话。
2.一问一答，对话完成后互相交换。
3.你可以参考以下的句型。
S1:Which is the largest country in the world ,China, Russia,Canada
S2:Russia is the largest country.
S1:How about China
S2:China is the third largest country in the world.
big, country, China,Russia or Canada
Language point
be made of ...…制的
辨析:be made of,be made from与be made in
①be made of由....成强调从制成品中能看出原材料
If it's made of wood it will float.这要是木材做的就能浮在水面上。
②be made from ....成强调从制成品中看不出原材料
Synthetic silk can be made from wood fibres.
人造丝可用木纤维制造。
③be made in在......制造;in后接表示地点的名词
The lecture will be made in the hall.讲演将在大厅举行。
The red one costs￥2,500，and it's made of leather.这个
红色的价值2500元，它是由皮革制成的。
语法填空
①Nearly every long-distance call made ___ Britain now travels on optical fibre instead of cable.
②The cup appeared to be made ___ some sort of copper.
in
of
Summary
1.单音节词一般在词尾加-er -est
long→longer→longest
2.以不发音的e结尾时，在词尾加-r、-st
nice→nicer→nicest
3.以“辅音字母+y”结尾的词，变y为i,再加-er, -est happy →happier→happiest
4.末尾只有一个辅音字母结尾的重读闭音节词， 双写这一辅音字母再加-er, est(“辅元辅”结构)
big →bigger →biggest
5.多音节和部分双音节词，在原级前加more、most
interesting→more interesting→most interesting
6.少数以-er、-le为词尾的形容词有两种变化方式
clever→cleverer/ more clever→cleverest most clever
规则变化
Exercise
Home work
一、 单项选择
1. Tom jumped the _______ in his school, so the headmaster spoke of him.
A. most highly: high B. highest; high C. most highly; highly D. highest; highly
2.——How are you feeling now, Jim
——I am feeling _______ after a good sleep. Thanks.
A. more better B. more well C. much better D. much well
3. He is ________ taller than us.
A. many B. much C. more D. a few
4. I like the TV channel with funnier programmes but ________ advertisements.
A. few B. fewer C. little D. less
5. ——Maths isn't as ______ as Chinese.
——I agree with you. I think Chinese is ________ than any other subject.
A. easy; easier B. easier; easier C. easy: easiest D. hard; the most difficult
D
C
B
B
A
Exercise
二、完成句子
1．音乐作品《水》是谭盾最伟大的作品之一。
The music piece Water is _____________________________.
2．他的鞋子比我的贵多了。
His shoes are much __________ __________ __________ __________.
3．他是他们学校跑得最快的运动员。
He is ________ ________ ________ in his school.
4．在我看来，似乎如今的孩子们更加依赖他们的父母了。
It seems to me that kids today ________________ their parents.
5．在学校里，英语是最重要的学科之—。
English is ______________________ subjects at school.
6．中国是世界上最大的国家之—。
China is _______________________ countries in the world.
one of Tan Dun’s greatest works
more expensive than mine
the fastest runner
depend more on
one of the most important
one of the largest/biggest
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