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(共39张PPT)
Section 2 Grammar
Unit 4
Inventions
沪教版2024英语（八年级上）
学习目标
I can
identify important inventions in history.
talk about some interesting inventions in our daily lives.
describe my ideas for a new invention.
understand the features of great inventions.
01
新
课
导
入
03
应
用
实
践
06
回
顾
总
结
07
随
堂
小
练
02
学
习
理
解
04
迁
移
创
新
05
考
点
速
递
学习内容
新课导入
1
写出下列形容词的比较级和最高级。
1. hot _________ _________
2. busy _________ _________
3. new_________ _________
4. wide ___________ _________
3. slowly______________ _________________
4. comfortable ___________________ ________________
hotter; the hottest
busier; the busiest
thinner; the thinnest
wider; the widest
more slowly; the most slowly
more comfortable; the most comfortable
Review the rules
Look and say!
How do these inventions change our life
Great inventions
We can use the words we have learnt in page 52-53 to help you! pay attention to using the degrees of adjectives.
Greatest faster more comfortable
Look and say!
How do these inventions change our life
The wheel is perhaps the greatest invention in history. After its invention, travelling became faster and more comfortable.
The wheel
The telephone
keep in touch with, more quickly, more convenient . over longer distance
How do these inventions change our life
The telephone can keep in touch with each other more quickly and convenient, and they can speak over longer distance.
How do these inventions change our life
the bulb
practical do many things as …as
The bulb is a very practical invention. we can do as many things in the evenings as we can in the daytime.
How do these inventions change our life
The computer
find information, more quickly, easily, more fun
The computer is a useful invention, we can find our information more quickly and easily, it can give us more fun.
学习理解
02
Some comparative and superlative adjectives are irregular.
Read the passage and pay attention to the words in bold.
A good, bad and far
Many inventions make people’s lives better. For example, the invention of the wheel allowed people to travel farther distances. However, there are bad inventions too. A magazine once picked the top ten worst inventions in human history, such as cigarettes and plastic bags. Many people think these inventions make the world a worse place to live in.
Adjective Comparative adjectives Superlative adjectives
good better best
bad worse worst
far farther / further farthest / furthest
Early computers were as big as a room.
With electric lights, people can do as many things in the evenings as they can in the daytime.
A candle does not produce as much light as a light bulb.
B (not) as … as
We use (not) as … as to say that things or people are (not) equal in some way.
Read the sentences below and pay attention to the words in bold.
Let’s sum up the rules!
We use (not) as … as with the base form of adjectives to compare things and people.
We use (not) as … as with many + the plural form of a countable noun or
much + an uncountable noun to compare amounts.
A good , bad, far比较级和最高级
good, bad, far的比较级和最高级比较特殊，详见下表：
Adjective Comparative adjectives Superlative adjectives
good better best
bad worse worst
far farther / further farthest / furthest
1. good （好的）
原级：good比较级：better （更好的）最高级：best （最好的）
This is a good book.这是一本好书。
This book is better than that one.这本书比那本好。
This is the best book I've ever read.这是我读过的最好的书。
2. bad （坏的）
原级：bad比较级：worse （更坏的）最高级：worst （最坏的）
He felt bad about the mistake.他为这个错误感到难过。
His health is worse than before.他的健康状况比以前更差。
It was the worst day of my life.那是我一生中最糟糕的一天。
3.far （远的）
原级：far比较级：farther/further （更远的）最高级：farthest/furthest （最远的） 注：在美式英语中，farther通常用于表示物理距离的更远，而further可以用 于抽象意义或距离上的更远。
She lives farther from the school than I do.她住得比我离学校远。
I can't go further than this.我不能再往前走了。
This is the farthest I've ever been from home.这是我离家最远的一次。
B (not) as ... as
(not) as ... as结构用来比较两个事物的特质，表示两者在某个方面相同 或不同。这种结构通常与形容词或副词的原级一起使用。以下是具体的用法总结：
1.肯定形式
形容词：This book is as interesting as that one.
这本书和那本书一样有趣。
副词：He runs as fast as his brother.
他跑得和他哥哥一样快。
2.否定形式
形容词：This book is not as interesting as that one.
这本书不如那本书有趣。
副词：He does not run as fast as his brother.
他跑得不如他哥哥快。
注意：
当使用“(not) as ... as”结构时，形容词或副词应使用原级形式，而不是比较级或最高级。
这种结构可以用于各种形容词和副词，包括描述大小、速度、颜色、重要性等。
在口语中 not so... as 比not as ... as更常见，但在书面语中两者都可以接受。
迁移创新
04
REPORT Class 2A Name Art Science
Alice 84 65
Belinda 72 70
Daisy 83 91
Eric 79 64
Martin 80 78
Paul 81 84
Pauline 62 69
Daisy got an 83 in Art.
Daisy's mark in Art.
Look at the school report below. In pairs, ask and answer questions about it.
1. S1: Who _________________in Art, Belinda or Daisy (good)
S2: ____________________________________.
2. S1: Who _________________ in Art (good)
S2: _____________________________.
got a better mark
Daisy got a better mark in Art than Belinda.
got a best mark
Alice got the best mark in Art.
REPORT Class 2A Name Art Science
Alice 84 65
Belinda 72 70
Daisy 83 91
Eric 79 64
Martin 80 78
Paul 81 84
Pauline 62 69
3. S1: Who __________________ in Science, Paul or Martin (good)
S2: _________________________________________.
4. S1: Who ___________________ in Science, Eric or Alice (bad)
S2: ________________________________________.
5. S1: Who _________________ in Science (bad)
S2: _____________________________.
Paul got a better mark in Science than Martin.
got a worse mark
Eric got a worse mark in Science than Alice.
got the worst mark
Eric got the worst mark in Science
got a better mark
Look at the pictures below and complete the following sentences.
3. The Hotwave _______________ (high) the Micro-King.
4. The Micro-King _____________________ (deep) the Speedcook.
5. The Hotwave and the Micro-King ______________ (wide) the Speedcook and the Superoven.
is as high as
is not as deep as
is not as wide as
Look at the table and the pictures below. Then complete the sentences with (not) as many/much ... as.
The Blacks ____________________ cans ____ the Browns.
2. The Whites _____________________ plastic ____ the Browns.
3. The Browns _____________________ paper ____ the Blacks.
4. The Greens ______________________ glass ____ the Whites.
5. The Greens ______________________ cans ____ the Whites.
as
as
as
as
as
throw away as many
throw away as much
throw away as much
don't throw away as much
don't throw away as many
1 Some historians have made a list of great inventions in the past 1,000 years. Look at the list and complete the conversation below with the correct form of the words in brackets.
Year Invention
1041–1048 movable type
1440 –1450 printing press
1796 vaccine ①
1876 telephone
1879 light bulb
Year Invention
1885 car
1895 radio
1903 airplane
1925 television
1940s computer
Su Wen: I think movable type is the (1)_______(good) invention in the past
1,000 years. Thanks to this, people could have books to read.
Su Mei: Well, it is an important invention. However, I think the light bulb is
an even (2)________(good) invention. It was hard to read and write
at night before we had light bulbs. Which modern invention do you
think is the most important
Su Wen: Definitely the computer. It has been almost (3)______________
(important, as ... as) the movable type.
Su Mei: The things on the list are all great inventions. After all, life would be
much (4) __________ (bad) without them!
best
better
as important as
worse
2 Look at the list of the great inventions in the past 1,000 years in Exercise 1.
Then ask and answer the questions in pairs.
(1) Which invention do you think is more important, the printing press or the light bulb Why
(2) Which invention do you think is the most important Why
(3) What other inventions do you think are as useful as those on the list
考点速递
05
一、注意good , bad, far比较级和最高级的构成
二、as…as 结构。注意中间用形容词或者副词原级。
回顾总结
06
We have learned how to use the comparative and superlative
of good, bad, and far.
2. We have learned how to use the pattern not as… as.
课堂小练
07
（一）单项选择。
1 You are ______ at English than Alice.
A. good B. better C. more better D. best
2 Mike is ______ student in his class.
A. good B. better C. best D. the best
3 Which one is ______ , the telephone or the mobile phone
A. best B. the best C. better D. good
4 The weather today is ______ than yesterday.
A. bad B. more bad C. worse D. worst
5 Today is ______ day in my life.
A. the worst B. worst C. worse D. bad
6 The airport is _______from our school than the train station is.
A. far B. farther C. more father D. farthest
7 He is as clever _______ you.
A. as B. so C. than D. like
8 The candle is not as _______as the lamp.
A. bright B. brighter C. more brighter D. brightest
9 This bus can carry as _______ passengers as that one can.
A. much B. many C. more D. most
10 Mrs Black didn’t buy as _______ bread and milk as Mrs White did.
A. more B. most C. many D. much
（二）用所给词的适当形式填空。
I am not _________ (good) at Maths, but Jack is_________ (bad) than me.
I think this picture is _________(good) than that one.
What ________ (bad) weather! I hope it will get ________ (good) soon.
4 Tom’s home is the _________ (far) from school in his class.
5 Lucy is as _________ (smart) as Lily.
good
worse
better
bad
better
farther
smart
（三）完成句子。
1 我认为李老师是我校最好的老师。
I think Mr Li is in our school.
2 你的语文比你姐姐好吗？
Are you at Chinese your sister
3 杰克的音乐成绩全班最差。
Jack got mark in Music in his class.
4 我现在的感觉比昨天更糟。
Now I’m feeling yesterday.
5 博物馆比电影院离我家更远。
The museum is from my home the cinema is.
the best teacher
better
the worst
worse than
farther than
than
6 她和她姐姐一样高。
She is her sister.
7 这盏灯没有那盏便宜。
This lamp is that one.
8 我收集的邮票和李华的一样多。
I collect stamps Li Hua does.
9 我的零花钱没有你多。
I don’t have pocket money you.
10 我们得到了所需要的那么多的书。
We’ve got we need.
as tall as
not as / so cheap as
as many as
as much as
as many books as
Thank you！

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