形容词与副词比较级讲解与练习
一、规则变化
1.一般单音节词未尾加-er,-est tall(高的) taller tallest great(巨大的)greater greatest
2.以不发音的e结尾的单音词nice(好的)nicer nicest large(大的)larger largest
3.双写结尾的辅音字母（辅+元+辅），再加-er，-est big(大的)bigger biggest hot热的)hotter hottest
4."以辅+y"结尾的双音节词，改y为i，再加-er，-est easy—easier--- easiest busy—busier--busiest
5.其他双音节词和多音节词，在前面加more，most来构成比较级和最高级。
important(重要的)more important most important easily(容易地)more easily most easily
二、不规则变化
good(好的)/well(健康的)—better--best bad (坏的)/badly(坏地)---worse--- worst
old (老的)--older/elder--oldest/eldest much/many(多的) –more--most
little(少的less least far (远的)farther/further farthest/furthest
用法
1. 同级比较两者相比（甲＝乙），用“as+原级＋as”
e.g. Tom is as tall as Jack She could do as well as a man. He runs as fast as I.
两者相比（甲＜乙），用“not as(so)+原级＋as”
e.g. She isn’t as(so) careful as you. I didn’t do my homework as carefully as you. He is not as tall as I.
2. 比较级用于两者或两部分间比较。
（1）两者相比（甲＞乙），用“比较级＋than”表示
e.g. This room is bigger than that one. I am taller than you. This lesson is more difficult than that one.
（2）表示“…不如…”，用“less＋原级＋than”结构
e.g. The book is less difficult than that one. The film is less interesting than that one.
（3）不与其他事物相比，表示本身程度的改变，用“比较级＋and＋比较级”结构，意思是“越来越…”
e.g. The weather is getting colder and colder. Our country is becoming more and more beautiful.
注意：修饰比较级的词有much, even, far, a lot, a little等，表示“……得多”，“甚至……”，表程度。
e.g. Today is much colder than yesterday.
附加：常见比较级五句型
1> Who / Which + be +比较级, A or B ?
Who is taller, Tom or John? Which is more expensive, a bicycle or a computer?
2> ~ + be + the 比较级+ of the two. (两个之中比较…的那一个，~包含在两个之中) Tom is the taller of the two. = Tom is taller than the other boy.
3> much / a lot / even / far + 比较级A compute is much more expensive than a bicycle. 计算机比自行车贵多了
4> "The+形容词比较级..., the+形容词比较级...", 表示" 越... 就越..."。
The more you study, the more you know. 你学的越多, 就知道的越多。
5> " 形容词比较级+ and + 形容词比较级", 表示" 越来越... "。
The computer is cheaper and cheaper.
3. 最高级用于表示三者或三者以上中的“最”。
A＋be+ the+最高级+ in/of＋表范围的短语e.g. He is the tallest boy in our class. He is the oldest of the three.
of 在……之中/之一in 在……范围之中
1> Who / Which + be +最高级, A, B, or C ? Which is the most expensive, a bicycle, a motorcycle, or a car? 自行车，摩托车和汽车，哪一个最贵？
2> ~ + be + one of the +最高级+复数名词, 表示"最……的……之一"。
The Yellow River is one of the longest rivers in China. 黄河是中国最长的河流之一。
3> "…+ be +the + 序数词+最高级+单数名词+ 范围", 表示"……是…….的第几……"。
She is the second tallest student in our class. 她是我们班第二高的学生。