Unit 3 Language in use 比较级最高级变化及运用课件

课件40张PPT。Grammar Focus形容词的比较级和最高级 comparatives and superlatives with adj. and adv.大多数形容词和副词有三个等级：
原级、比较级、最高级。
一、形容词比较级的构成
构成的规则变化:
形容词和副词的比较级 short-shortersmall-smallernicenicersafesafer------bigthinheavyheavierhappyhappier找规律：bigbiggerthinthinner1)在形容词后直接加-er。
如：short -- shorter small -- smaller
2)以不发音的e结尾，直接加 r.
如: nice -- nicer safe -- safer
3) 重读闭音节词末尾只有一个辅音字母
时, 先双写这个辅音字母, 再加-er。
如: big – bigger
thin – thinner
4) 以“辅音字母+ y”结尾的双音节词，
先改y为i, 再加-er。如：
easy – easier
happy – happier delicious – more delicious
interesting – more interesting
important— more important
carefully---more carefully
quickly---more quickly
slowly---more slowly
easily--- more easily找规律：5) 多音节词和部分双音节词在词前加more
。如：
delicious – more delicious

interesting – more interesting

important—more important
carefully---more carefully
quickly---more quickly
slowly---more slowly
easily--- more easily 形容词最高级的构成talltallertallestB: heavy
easy
tidy
dry
busy
happy
healthy
hungry
earlyy -- i-- estC: large
late
nice-- st biggestD: bighothottestthin “双写”thinnestwet wettest fatfattestAdjective delicious
dangerous
interesting
popular
beautiful
careful
friendly the most -- adj .
用法：英语中三者或三者以上相比较，表示
“最……” 这样的最高程度概念时，要用 “the+最高级” 的结构表示。这种句式一般带有表示比较的介词短语，比如: in our class, of the three 等。
例如：Wang Lin is the tallest in our class.
This theater is the cheapest of the three.
最高级变法有以下几点：
形容词的最高级a.直接加-est.
如：short--shortest small--smallest
b. 以-e 结尾的形容词，最高级+ -st。如： large—largest nice—nicest
cute—cutest
c. 以辅音字母+y结尾的形容词，变y为i +est。
busy—busiest
heavy—heaviest
easy—easiest
happy—happiest
dirty—dirtiestd. 以重读闭音节结尾，末尾只有一个辅音字母结
尾的词，双写最后一个辅音字母，再加+er或
+est。 如：
big—bigger—biggest thin—thinner—thinnest
fat—fatter—fattest hot—hotter—hottest
e. 多音节和部分双音节形容词，需在原级前+more
构成比较级，+ most 构成最高级。如：
important—more important—most important
beautiful—more beautiful– most beautiful
difficult—more difficult—most difficult 1）一个元音字母后跟一个或几个辅音字母，他们组成的音节必须是重读音节
（2）以一个辅音音素结尾；
（3）元音字母发短元音。3. 不规则变化：
最高级规则变化口诀：最高级，很容易，一般词尾加est。
(cheap-the cheapest)
词尾若有哑音e, 直接就加st。
(close-the closest)
重读闭音节, 单辅音字母要双写。
(big-the biggest)
辅音字母加y, 记得把y变为i。
(friendly-the friendliest)
多音节，考考你，the most到底加哪里？
(popular-the most popular)The Comparative Superlative Degrees of Adjectives & Adverbs总 结 形容词和副词
比较级和最高级late
later - latestearly
earlier – earliestbig
bigger- biggestfluently/difficult
more～, most～重读闭音节、末尾只有一个
辅音字母双写加 –er 或 –est
单音节词在词尾比较级加- er或最高级加- est
以e结尾的词，只需加－r 或－st
以辅音字母加 y 结尾双音节词变 y 为 i 加 –er 或 –est部分双音节和多音节词在原级前加 more 或 most少数以er,ow 结尾的双音节词加-er -esttall
taller- tallest clever
cleverer-cleverestcheap, cold, small, warm, young, highfine, nice, safehappy, busy, dirty, easy, lazy, prettyfat, hot, red, thin, wet, sad narrow, yellow quickly, slowly, useful, careful, popular, modern, 形容词和副词比较级和最高级构成 (规则变化)　
不规则变化 good / well – better - best much / many – more - most
bad / badly / ill – worse – worst
little – less – least
far – farther/ further– farthest – furthest
old – older/ elder – oldest / eldest1. Paul is very _______ . He is ________ than his brother .
A. heavy --- heavier B. heavy --- heavy
C. heavier --- heavier D. heavy---heavyer
2. It has the ________ clothing store in the town.
A. goodest B. gooddest C. best D. better
3. This ruler is ____ than that one.
A. long B. longer C. the longest D. longest
4. This book is ____ of all.
A. cheapest B. cheap D. cheaper D. the cheapest
5. He is much ____ than his brother.
A. taller B. tall C. the tallest D. tallest
6. Li Lei is ____ older than Lucy.
A. quite B. very C. much D. more一. 单选。1.Who is _______(quiet), Mary or Jane?
2.Lucy is much _____ (smart) than Lily.
3.Miss Du is a little ________ (outgoing) than her sister.
4.My English teacher is quite _____(good) at telling stories.
5.Jim runs very _____ (fast), I can’t follow him.Class exercisesWrite a report“My friend ”
Write about the things that are different between you and your friend.（hair, build, character, age…..)
I have a good friend. His/ Her name is… He/ She is … than … I’m … than …
Thank You!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 …” 6. 表示不及另一方时，用“less+原级+than…”
　 (双音节和多音节词)He becomes healthier and healthier.The more you exercise, the healthier
you will be.She is less healthy than he.He is healthier than she.Shanghai is becoming more and more modern.1.比较级 + and +比较级 越来越…
2.the+比较级 , the + 比较级　 越…, 越 … 3._______________you are, _________mistakes you
will make. (你越仔细，做错的题目就越少）
4. __________you eat, _________you’ll be.
(你吃得越多,就越胖)
5. Alice writes well. Mary writes _________________
than she. (甚至更好）The more carefulthe fewerThe morethe fatter1.The girl becomes ______________________.
(越来越漂亮）more and more beautiful2. The weather is getting _________________.
(越来越槽糕）worse and worseeven / still better1.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)
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Who is the tallest, Tom , Mike , or Jack?Tom is the tallest of the three.Mike is the second tallest student in our class.Jack is one of the tallest students in our class.Tom runs (the) fastest in our class. 3. Lin Tao is __________________________ in the class because he never gets to school on time. （最懒的学生之一）
4. Edison was_________________________
in the world. 　(最伟大的发明家之一）one of the laziest studentsone of the greatest inventorsThe Yangtze River is__________________ river in the world. (第三长河）the third longest2. The Atlantic is __________________
ocean in the world. ( 第二大洋）the second biggestExercise:一、翻译句子：二、同义句转换 1. Flat A is more expensive than Flat B
Flat B is _____ __________ than Flat A.
Flat B is ________ _______ Flat A.
Flat B is not ____ __________ ___ Flat A.better than2.He is the tallest student in the class.
He is ______________________________ in the class.taller than any other studentany other +　名词单数lessexpensivecheaperthanasexpensiveas 1.Hainan is a very large Island .It is the
second _________ island in china. (large)
2.Our teacher is as ______ as before. (busy).
3.He is ______________ among us. (careful)
4.Li Lei jumped far ______ than Jim. (far)
5.The busier he is, the ________ he feels. (happy)
6.I think Yao Ming is one of ____________
basketball players in NBA. (hot)
busythe most carefulfartherhappierlargestthe hottest三、完成句子1. good
2. comfortable
3. big
4. happy
5. cheap
6. many
7. difficult
8. little better best
more comfortable most comfortable
bigger biggest
happier happiest
cheaper cheapest
more most
more difficult most difficult
less least 1. Lily gets up ______ (early) than
Lucy.
2. Which goes __________ (slowly),
Tom or Jim?
3.This book is _______________
(interesting) than that one.earliermore slowly more interesting二 根据所给词的适当形式填空 4. She works ________________ (careful) in her school.
5. Who goes to bed _________ (late) Jim, Tom or Jack?
6. I think turkey is ________________ (delicious) of all. the most carefully latestthe most delicious (1) 表示 “最……之一” 的句式，要用 one of the
+形容词最高级+复数名词。
例如: Jingjiang Hotel is one of the biggest hotels
in our city.
Lisa is not one of my best friends.
(2) 当最高级前面有物主代词或名词所有格时，
不加定冠词 the。
例如：Tom is Lucy’s best friend.
Tuesday is her busiest day.2. 形容词最高级的构成
规则变化
一般情况下，单音节或双音节的形容词最高级直接加-est。如：
clever—cleverest
cheap—cheapest
few—fewest
small—smallest
young—youngest
7. This is one of ____ films of this year.
A. more exciting B. exciting
C. the most exciting D. most exciting
8. The weather in Beijing is colder than_____.
A. in Guangzhou B. Guangzhou
C. that in Guangzhou D. that from Guangzhou
9. Tom is ____ of the two boys.
A. taller B. tallest C. the taller D. the tallest
10. Of my parents, my father looks_____.
A. old B. older C. the oldest D. the older
11. This watch is ____ than that one.
A. much expensive B. expensiver
C. more expensiver D. more expensive二. 用括号中形容词的适当形式填空。
1. I am very _______. But Tom is ____________
than I . Frank is _________________. （tired）
2. Which is _____________ （difficult）,
physics or biology ?
3. This book is ________ than the other two .
It is ____________of the three . （easy）
4. In summer it’s _______ （hot） in Wu Han
than in Beijing .
5. The Chinese people have a much _______
（good）life now . tiredmore tiredthe most tiredmore differenteasierthe easiesthotterbetter三. 填空： 1. Lily gets up __________ (early) than Lucy.
2. Which goes ______________ (slowly), Tom or Jim?
3.This book is _____________________ (interesting) than one.earliermore slowly more interesting4. She works ____________________(careful) in her school.
5. Who goes to bed ____________ (late) Jim, Tom or Jack?
6. I think turkey is ______________________ (delicious) of all.the most carefullythe latestthe most delicious1.We are going to the Green Restaurant for lunch.
(就划线部分提问)
____________ you going for lunch?
2. Sam is the shortest in his class. (改为同义句)
Sam is ________ than ____ _____ student in his class.
Sam is _______ than _____ _____ students in his class.
Sam is _______ than________ ______ in his class.
3. How do you like Screen City? (改为同义句)
_______ do you __________ Screen City?Where areshorterany otherWhatthink ofshorterthe otheranyone elseshorter练习：改写句子