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1、形容词原级 、比较级 、最高级的用法一、形容词的概述（一）形容词的定义及位置? 说明人或事物的特征、性质或状态，常用来修饰名词或某些代词的词叫做形容词。形容词一 般放在名词前，在句子中可作定语、表语、宾语补足语等。1、作定语，放在名词之前，不定代词之后 。? 如：The beautiful girl is my sister。这个漂亮女孩是我妹妹。?I have something important to tell you.。我有重要的事情告诉你。2、作表语，放在系动词之后。? 如：Our school is big and clean. 我们的学校又大又干净。?I felt terribl
2、e this morning. 我今天早上感觉不舒服。3、作宾语补足语，放在宾语之后 。? 如：you must keep your eyes closed. 你必须闭上眼睛。?I find it hard to travel around the big city.? 我发现环游这个城市很困难。4、某些形容词放在定冠词之后，变成名词，表示一类人。常见的有 good/bad；rich/poor；young/old； deaf/blind；black/white； living/dead 等。?如：The rich should help the poor. 富人应该帮助穷人。?The youn
3、g should be polite to the old.? 年轻人应该对老人有礼貌。（二）形容词的种类?形容词可以表示质量、大小、新旧、形状、颜色、产地、温度等。（1） 表示质量： a beautiful dress;? a nice day 等。（2） 表示大小 ：a big dog;? a small pot;?a little boy 等。（3） 表示新旧 ：a new coat;? an old watch 等。（4） 表示形状： a round table;? a tall building 等。（5） 表示颜色： blue eyes;? a white dog;? a red
4、sweater 等。（6） 表示产地： a Japanese apple;? a Chinese car 等。（7） 表示温度 ：the high temperature;? a cold day 等。（三）形容词的构成（1） 名词+ful 。 help -helpful;? care-careful 等。（2） 名词+y 。 rain-rainy;? cloud-cloudy;? sun-sunny 等。（3） 名词+ing 。 interest-interesting;? surprise-surprising 等。（4） 其它。wool-woolen;? friend-friendly;
5、? hundred-meter(race);? kind-hearted 等。二、（一）形容词比较级、最高级的规则变化1大多数形容词副词之后直接加er， est ,? 如：shortshortershortest；slowslowerslowesrt；quickquicker quickest2以 e 结尾的形容词和副词加 r，st ,? 如：nicenicernicest；latelaterlatest;? largelargerlargest3以辅音字母加 y 结尾的形容词副词变 y 为 i 再加-er ,-est,? 如：earlyearlierearliest? heavy heavi
6、erheaviest;? busybusierbusiest 4以重读闭音节结尾末尾只有一个辅音字母的，双写末尾的辅音字母再加 er,est,? 如：bigbiggerbiggest;? fatfatterfattest;? hot hotterhottest;? thinthinnerthinnest;? redredderreddest（二）形容词比较级和最高级的不规则变化1不规则的形容词副词的比较级最高级：? 如：many/muchmoremost? good/wellbetterbest?bad/badly worseworst? littlelessleast ? farfarthe
7、rfarthest?2多音节的形容词副词的比较级最高级加 more,most,? 如；beautifulmore beautifulmost beautiful? interestingmore interestingmost interesting? popularmore popularmost popular三、形容词的用法（一）形容词原级（原形）的用法1、说明人或事物自身的特征、性质和状态时用形容词原级。? 如：The flowers in the garden are beautiful . 花园里的花漂亮。2、有表示绝对概念的副词 very, so, too, enough, qu
8、ite 等修饰时用形容词原级。? 如：The boy is too young. 这个男孩太小。3、表示 A 与 B 在某一方面程度相同或不同时用形容词原级。（1）肯定句中的结构：“A+as+形容词原级+as+B”，? 如：English is as interesting as Chinese. 英语和语文一样有趣。? Xiao Ming is as tall as Jim. 小明和吉姆一样高。（2）否定句中的结构：“A+as /so+形容词原级+as+B”，? 如：This book isnt as new as that one. 这本书不如那本书新。? I am not so care
9、ful as Lucy. 我没有露西仔细。（3）表示“A 是 B 的倍”时，用“A+倍数+as+形容词原级+as+B”结构。? （一倍：once;二倍：twice; 三倍以上：数字+times）? 如：Our school is three times as big as theirs. 我们学校是他们学校的三倍大。? The table is twice as long as that one. 这张桌子是那张桌子的两倍长。（二）形容词比较级的用法1、表示两者进行比较时用形容词比较级，其结构为 “A+比较级 +than +B”。? 如：Li Leis room is bigger than
10、mine.李莉的房间比我的房间大。2、有表示程度的副词 a little, a bit, a lot, much, even, still, far, rather, any 等修饰时，? 用形容词比较级。? 如：It is much colder today than before.今天比以前冷多了。3、表示两者之间进行选择“哪一个更 ”时，? 用句型“Which/Who is +形容词比较级，A or B?”表示。? 如：Who is taller, Li Ming or Wang Tao?李明和王涛谁更高？? Which sweater is more beautiful ,the ye
11、llow one or the pink one? ? 哪件毛衣更漂亮，黄色的那件还是粉色的那件？4、表示 “比”时，用“倍数+比较级+than? 如：I am three years older than you.我比你大三岁。5、表示 “两者之间最一个（ of the two ）”时，常用“the +比较级”结构。? 如：Mary is the taller of the twins.玛丽是双胞胎中较高的那个。6、表示 “越来越”，用比较级重叠结构，即“比较级 +and+比较级”，? 多音节词和部分双音节词时用“more and more+形容词原级 ”。? 如：Its getting w
12、armer and warmer in spring.春天天气变得越来越暖和。? Our hometown is becoming more and more beautiful. 我们的家乡变得越来越漂亮。 7、表示 “越就越”时，用“the+比较级，the +比较级“结构? 如：The warmer the weather is, the better I feel.天气越暖和我感觉越舒服。针对性训练(? )1. I found he looked _ than last time when I went to see him.?A. better B. well C. good D. b
13、ad(? )2. Shes already _ her brother.A. so tall than B. as tall than C. so tall as D. as tall as(? )3. It is said that it is _ today than yesterday. Shall we go swimming this afternoon? A. the hottest B. hot C. hottest D. hotter(? )4. Shanghai is bigger than _ in Japan.? A. any other city B. all the
14、other cities C. any city D. the other cities(? )5. _ you speak English, _ you can speak.A. The more; better B. More; the better C. More; better D. The more; the better(? )6. They have just cleaned the windows, so the room looks _ .?A. more brighter B. more bright C. less brighter D. much brighter(?
15、)7. Each of us was too tired to go any _ .?A. far B. farer C. much farther D. farther(? )8. -Dad, could you buy me a bike like this?- Hmm, we can buy _ one than this, but as good as this.A. better B. the best C. a cheaper D. a cheap(? )9. Now it is _ here, but it is even _ in Jinan.? A. hotter; hottest? B. hot; hottest? C. hotter; hot? D. hot; hotter(? )10. -I cant afford the white dress. Can you show me something cheaper? -What about the orange one? The price is a little _ .? A. cheaper? B. lower? C. higher? D. more expensiveKeys:?