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(共39张PPT)
Unit 4 Inventions
Gammar
compare
The elephant
is bigger than
the bird
Lead in
The lion
is bigger than
the mouse
The dog
is bigger than
the cat
small — smaller — smallest
slow — slower — slowest
clever — cleverer — cleverest
① 一般情况下，单音节/部分双音节词，
比较级＋er， 最高级＋est 。
Review
nice — nicer — nicest
cute — cuter — cutest
large — larger — largest
② 以哑e结尾的词，比较级＋r，最高级＋st 即可。
big — bigger — biggest
hot — hotter — hottest
fat — fatter — fattest
③ 辅元辅+重读闭音节，双写辅音字母，
再比较级+ er，最高级+ est。
easy — easier — easiest
busy — busier — busiest
happy — happier — happiest
④ 以辅音字母+ y结尾的双音节词，把 y 变为 i ，
再比较级+ er ，最高级+ est。
happily — more happily — most happily
beautiful — more beautiful — most beautiful
important — more important — most important
more
most
⑤ 其他的双音节词和多音节词 ，
比较级在词前加 ，最高级加
Let's play a game.
说出下列单词的比较级和最高级
good
better
best
tall
taller
tallest
large
larger
largest
famous
more famous
most famous
big
bigger
biggest
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.
Read the passage and pay attention to the words in blue.
good → better (比较级)
这些词是哪些形容词的比较级或最高级呢？
better
farther
far → farther (比较级)
worst
worse
bad → worse (比较级) → worst (最高级)
Pre-learning
good
这是一本好书。
这本书比我读的上一本更好。
这是我读过的最好的书。
原级: good (好的)
比较级: better (更好的)
最高级: best (最好的)
1. This is a good book.
2. This book is better than
the last one I read.
3. This is the best book
I've ever read.
bad
今天的天气很差。
今天的天气比昨天更差。
那是我一生中最糟糕的一天。
原级: bad (坏的)
比较级: worse (更坏的)
最高级: worst (最坏的)
1. The weather today is bad.
2. The weather today is
worse than yesterday.
3. It was the worst day
of my life.
bad/badly/ill的比较级都是worse, 最高级都是worst。
① I dance badly, Lucy dances worse than
me, and Tom dances the worst.
② Tom was ill yesterday, today he is worse,
and this is the worst he has been.
我跳舞跳得不好，露西比我跳得更差，而汤姆跳得最差。
汤姆昨天病了，今天更严重了，这是他病得最厉害的时候。
公交车站有多远？
你家离图书馆比我家远。
在所有同学中，他住得最远。
原级: far (远的)
比较级: farther/further (更远的)
最高级: farthest/ furthest (最远的)
1. How far is the bus stop
2. Your home is farther than
mine from the library.
3. He lives the farthest
among all classmates.
far
farther further
含义 仅表示具体距离上的 “更远”，强调物理空间上的远近。 除了表示距离，更常表示抽象意义上的 “更进一步、更深层次”（如程度、时间、数量等）。
例句 - My home is farther from school than yours. 我家比你家离学校远。 - He ran farther than his brother. 他比弟弟跑得远。 - We need further discussion on this
topic.
关于这个话题我们需要进一步讨论。
- She asked for further information.
她要求更多的信息。
farther VS further
描述具体距离时，“farther” 和 “further” 可以通用。
在美式英语中常用farther表示所有情况。
其他不规则变化的词
相关拓展
原级 比较级 最高级
well (健康的) better best
many/much more most
little (少的) less least
old older/elder oldest/eldest
better
best
worse
worst
less
more
most
farther/further
older/elder
least
farthest/furthest
oldest/eldest
口诀巧记：
好好坏坏
多多少少
老远啦
不规则变化口诀
原级 good well bad ill many much little far old 比较级 最高级
用括号中所给单词的正确形式填空。
1. Your idea sounds really _______ (good).
2. Miss Li is ________ (good) teacher in her school.
She's very popular with students.
3. Next year I'm going to France for _______ (far)
study.
4. This test is _______ (bad) than the last one.
5. This is _________ (bad) book I have ever read.
6. I can't walk any _____________ (far) —my legs
hurt.
the best
further
good
worse
the worst
farther/further
As sly (狡猾的) as a fox
As strong as an ox
As fast as a hare (野兔)
As brave as a bear
As free as a bird
As neat (整齐的) as a word
As quiet as a mouse
As big as a house
All I wanna be
All I wanna be
as + 形容词/副词原级 + as
和……一样……
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.
Read the passage and pay attention to the words in red.
(not) as … as 用来表示事物或人在某些方面(不)一样。
(not) as + 形容词/副词原级 + as
(not) as many + 可数名词复数 + as
(not) as much + 不可数名词 + as
“as … as”
基本结构
(2) He runs as fast as his brother.
(1) He is as tall as his brother.
他跑得和他哥哥一样快。
他和他哥哥一样高。
1. (not) as … as用于表示同级之间的比较，中间可加形容词、
副词原级。意思是“和……一样……(不如……；没有……
那么……)”。
(not) as … as 的用法
(3) This problem is not as difficult as it seems.
这个问题没有看起来那么难。
(2) She doesn't have as many books as her sister.
(1) She has as many books as her sister.
她的书不如她姐姐多。
她的书和她姐姐的一样多。
2. 若涉及数量或程度，可用“(not) as many + 可数
名词复数 + as” 或者 “(not) as much + 不可数名
词 + as” 。
(3) He drinks as much water as he can.
他尽可能多喝水。
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。
① This movie isn't so interesting as the last
one.
② The first experiment was not as
successful as we hoped.
这部电影不如上一部有趣。
第一次实验没有我们希望的那么成功。
翻译句子(将下列中文句子翻译成英文，用上指定结构)。
1. 我的书包不如你的重。(not as … as)
_____________________________________________
2. 这个盒子里的铅笔和那个盒子里的一样多。
(as many + 可数名词复数 + as)
_____________________________________________
3. 这朵花和那朵花一样漂亮。(as … as)
_____________________________________________
4. 她的钱和我的一样多。(as much + 不可数名词 + as)
_____________________________________________
My schoolbag is not as heavy as yours.
There are as many pencils in this box as in that box.
This flower is as beautiful as that one.
She has as much money as I do.
Year Invention
1041-1048 movable type活字印刷
1440-1450 printing press印刷机
1796 vaccine
n. 疫苗
1876 telephone
1879 light bulb灯泡
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!
P58 1
best
better
as important as
worse
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.
(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
P58
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.
Year Invention
1041-1048 movable type 活字印刷
1440-1450 printing press 印刷机
1796 vaccine n. 疫苗
1876 telephone
1879 light bulb 灯泡
1885 car
1895 radio
1903 airplane
1925 television
1940s computer
原级 比较级 最高级
good better best
bad worse worst
far farther/ further farthest/ furthest
well (健康的) better best
many/much more most
little (少的) less least
old older/elder oldest/eldest
不规则变化的
形容词的比较级和最高级
(not) as … as
用法
(not) as + 形容词/副词原级 + as
用于表示同级之间的比较，中间可加形容词、 副词原级。
若涉及数量或程度，可用“(not) as many + 可数名词复数 + as” 或者 “(not) as much + 不可数名词 + as” 。
基本结构
(not) as many + 可数名词复数 + as
(not) as much + 不可数名词 + as
1. She is always saying, “Don't you think mine is _____ than theirs ”
A. good B. better C. best
2. Peter's mother even suggests giving pocket money to
children as ____ as when they are four. “… Giving
children pocket money in their early years teaches
them the importance of budgeting.”
A. early B. earlier C. earliest
3. Sam did _____ in his studies this year than last year.
A. well B. better
C. best D. the best
4. - Which do you like _____, swimming or skating
- Swimming.
A. well B. better
C. best D. the best
5. The air has been much ________ these years.
Governments are taking action against pollution.
A. badly B. worst C. bad D. worse
6. 天很黑，冰雹飞过。它们有网球那么大。
It was dark and hailstones were flying past.
They were _____ _____ _____ tennis balls.
as big as
Thank you!

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