⑴ A>B或A<B（…比较级+than…）
This room is smaller than that one.
This story is more interesting than that one.
⑵ A=B（…as+原级+as…）
This cake is as big as that one.
Swimming is as exciting as climbing.
⑶ A≠ B (① not as/so+原级+as… 与……不一样,②more+原级… 超过……)
Jim is not as/so tall as Li Lei.
John is more hard-working than Joan.
English is more useful than Japanese.= Japanese is not so/as useful as English.
When winter comes, the days get colder and colder.
My hometown is becoming more and more beautiful.
(5)表示两种情况同时变化。（the+比较级…, the+比较级 越来越……）
The busier she is, the happier she feels.
The less she worried, the better she worked.
The more we get together, the happier we’ll be.
(6)A>B>C… (…the+形容词或副词的最高级+in/of/among+比较范围…，最……)
He is the tallest of the three.(of表示所有关系时，介词后的词与主语同类。)
Jim writes most carefully in his class. (in表示范围。)
This picture is the most beautiful among these.(among后接代词或没有修饰语的名词。)
(7)A=B>C>D>…（…one of the+noise的形容词最高级+可数名词的复数形式+in/of… ,最……之一）
Rose is one of the most careful girls in her class.
Ann studies the hardest of all the students in our class.
.(8)不用比较级的形式对事物进行比较，我们常见有以下词组：
be like, look like, look the same, be the same as…,be alike, be different from…,be unlike, be alike.
This story is like that one.
Ann looks like her mother.
Lily and Lucy look the same.
Lily and Lucy are alike.
Han Mei’s shoes are the same size as mine.
Steel is different from / unlike iron.
(9)强调比较程度时，比较级可用的修饰词有：much, far, still, even, no, any, a lot, a little, a bit,等.
A kangaroo is even taller than a man.
Please come here a little earlier.
The job is far more difficult than he thought.
Li Lei jumps much farther than Jim does.
(10)形容词比较级+“the”的句型。
He is the cleverer of the two boys.
(11)形容词最高级不加“the”的情况。
Today is my happiest day.
(12)比较级经典同义句转换
1.A horse is more useful than an elephant.
= An elephant is a horse.
2.She is the tallest of the three.
= She is than the .
3.Li Lei runs fastest in his class.
= Li Lei runs faster than in his class.
= Li Lei runs faster than any of the other students in his class.
= Li Lei runs faster than in his class.
= Li Lei runs faster than in his class.
4.I think mathematics is more useful than physics.
= I don’t think physics is math.
5.. which is the larger country, China or America?
= Which is , China or America?
常用的词形变化 祝 你 周 末 愉 快 ！
常用的词形变化
一．.复数
1.loaf______2.balcony_____3.shelf______ 4.knife______5.baby______6.goldfish______7.ability 8.activity_____9. piano ______ radio ______ photo ______10. hero ______ mango _
_____ tomato ______ potato ______11.activity ______ 12. memory ______13. hutch ______
二．形容词
1. wood ______ 2.sun ______ 3.fun ______ 4 close ______ 5. surprise _______/______ interest ______/_______ frighten ______/______ amaze ______/_______ excite ______/______6.smile______ 7.open ______ 8. worry ______ 9. care ______/_______ 10. noise ______ 11. follow ______ 12. danger ______13. safety ______ 14.help ______ thank ______15.thought ______l6. music ______17.sport ______ 18.please ______/_______ 19. Britain ______ 20. taste ______21.use ______/_______ 22. second ______ 23. health ______ 24. friend ______ love ______ like ______
三 ing 形式
1.die ______ tie ______ lie ______2.get ______ plan ______ put ______ sit ____
__ chat ______ get ______ swim ______ run ______ begin ______ forget ______ stop ______ step ______
四．过去式
fall ______feel ______ forget ______catch______lose ______ hold ______feed ______ bite ______ teach ______ hide ______ build ______ plan ______ become ______ fight ______ fit ______ 同形：put ______ shut ______ cut ______ let ______ hurt ______ set ______ cost ______ read ______
五．序数词
one ______ two ______ three ______ four ______ five ______nine ______ twelve ______ twenty ______ twenty-one ______
六．名词
1.cook ( 烧饭) ______ (厨师) 2. dangerous ______3. safe ______ 4. own ______ run _
_____ swim ______ wait ______ rob ______ win ______ 5. mean ______ 6. weigh ______ 7.long ______ 8. high ______ 9.visit ______ 10. build ______ 13. appear ______ 14. please ______ 15. sit ______
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