1、比较级和最高级的用法1. 表示“比.更 “ “胜过、超过“, 结构：比较级形容词+than+比较成分Eg：你比我更高。You are me.2. 表示“较.低 ; 不及.“, 结构：less+原级形容词+than+比较成分。Eg：我不比他年轻。 I am than he .3. 表示两者之中“较.“, 结构：the+ 比较级+of the two。Eg：这所房子是两座房子中较大的。This one is the two houses.4.同级比较结构： as + 形容词或副词原级 + as “和一样“Eg：他和小明一样高。He is Xiao Ming.5、最高级用于三者或三者以上的比较时，表
2、示“最” 。结构： the + 最高级 + 比较范围。注意：形容词最高级前通常必须用定冠词 the撒哈拉是世界上最大的沙漠。The Sahara is desert in the world.长江是中国最长的河流。Changjiang is river in China.特殊比较级和最高级的变化1） 以 辅音字母加-y 结尾的形容词的比较级和最高级是变 y 为 i ，+er 或+est 构成.happy （原形） happier （比较级） happiest （最高级）2） 以重读闭音节结尾且末尾只有一个辅音字母，其前面的元音字母发短元音的形容词的比较级和最高级，是双写该辅音字母然后再+er
3、和+est 。big （原级） bigger （比较级）biggest（最高级）3）多音节词和部分双音节词，在词前加 more 或 most。serious(原级） more serious（比较级） most serious（最高级）4）不规则变化good / well -better-best ill /bad/badly- worse-worstmany / much -more-most little -less -least5） .由“动词+ 后缀-ing/-ed ”构成的形容词，在词前加 more 或 most。如：interesting-more interesting-most
4、 interesting，bored-more bored-most bored。6） .由“形容词+ 后缀-ly”构成的副词，在该副词前加 more 或 most。如：slowly-more slowly-most slowly，happily-more happily-most happily。一、写出下列形容词的比较级和最高级。1. old _ _ 2. busy _ _3. thin _ _4. many _ _5. slow_ _6. delicious _ _7.long_ _ 8.wide_ _ 9. fat _ _10.slow _ _11.few_ _12.far_ _13.
5、good_ _14. bad _ _ 15.little_ _16.sincere_ _17.much_ _18.early_ _19.fast_ _20.difficult_ _ 二、选择正确答案：1. She is _ than _ . A. busier / us B. busier / we C. more busy / us D. more busy / we 2. Jane is _ than Betty. A. less taller B. less tallest C. less tall D. not as tall 3. China is _ country in the
6、world. A. the third largest B. the largest third C. the third large D. a third largest 4.-Which is _ season in Beijing? -I think its autumn. A.good B.better C.best D.the best 5.- Which is_ , the sun, the moon or the earth?- Of course, the moon is. A.small B.smaller C.smallest D.the smallest 6.The ai
7、r in Beijing is getting much _ now than a few years ago. A. clean B. cleaner C. cleanest D. the cleanest 三、用适当形式填空：1. Bob is _ ( young ) than Fred but _ (tall) than Fred. 2. Almost all the students faces are the same but Li Deming looks _ (fat) than before .3. Which is _ (heavy), a hen or a chicken?
8、 4. Annie says Sally is the _ (kind) person in the world. 5.He is one of the_(friendly) people in the class, I think.6. A dictionary is much _ (expensive) than a story-book.7.Miss Chen is _ _than Mr. Wang. (popular)8. A rose _ _ _ _ a weed(野草). (beautiful)9. The Nile(尼罗河) is _ _river in the world. (
9、long)10. Test 1 is _ _ _of all the tests. （difficult）11. He is _than any other boy in the class.（clever）12. She is_ than all the other students. (young)13. The window is _ _ of the two. (narrow)14. Where is the _bus-stop? (near)15. He is one of _ _ _Politicians. (famous)16. Tom drives much _ _than J
10、ohn. (careful)17.Which is _ (big) ,the sun,the moon or the earth?18.Which is _ (beautiful),the black coat or the blue one?19.This mooncake is _ (cheap) of all.20.He is _ _ (strong) boy in the class.过去式和过去分词的用法1、过去式用于“一般过去时 ”，用来表达动词的“过了” 、 “完了”等意思，如表达做过和做完。如 eat 变成 ate，see 变成 saw，就是表达“吃过了” 、 “看过”的过去式
11、。2、过去分词1）常用于完成时，形成固定搭配；如：He has done his homework.他完成了他的家庭作业。done 是 do 的过去分词形式，在本句中表示“他已经完成了他的家庭作业。 ”2）在句中作表语，与句子的主语是被动关系，表示主语的状态，不但表示被动，还强调已完成了；如：The glass is broken.玻璃杯破了。broken 是 break 的过去分词形式，在本句中表示主语 glass 的状态，强调被打破，且已成事实。3）在句中做定语，常用于一般现在时或过去时，既表被动又表完成；如：We must adapt our thinking to the change
12、d conditions. 我们必须使我们的思想适应改变了的情况。changed 是 changed 的过去分词形式，作 conditions 的定语，修饰 conditions。一、写出下列动词的过去式和过去分词。arrive_ _ _ study_ use_ plan_ ask_ call_ _ hope_ control _ need_ carry_ play_ stop_ raise_ live_ try_ copy_ dance_ travel_ 二、用适当形式填空：1.As she reached the age of thirty she _ (become) convinced
13、 she would remain single all her life.2.Be careful, you could end up by getting_ (hurt).3.He _ (give) me a lot of help.4.If you have never _ (swim), then you really should have a go.5.Just then a friend _ (drive) up and gave me a ride.6.Last nights storm _ (bring) several trees to the ground.7.Medic
14、ine should not be _ (keep) where it is near to kids.8.The cake was_ (make) by that beautiful girl.9.She _ (sing) and we clapped.10.She _ (spend) lots of money on books last year.11.She _ (write) to him and decided to give him a chance.12.That stupid driver has _ (go) and blocked our car.13.I _ (eat)
15、 very delicious icecream yesterday.14.Do you know the boy_ (lay)under the big tree?15.I _ (see) my favorite teacher in the supermarket yesterday.16.He_ (teach) English in this school ten years ago.17.Ann_ (buy)her boyfriend a pair of shoes last week.18.He_ (have) the habit of drinking many years ago.19.He_ (take) off his hat just now.20.Weve_ (run) out of water.
