英语形容词比较级
(一)一般句式的构成： A + is / are+ 形容词比较级+ than + B
A 是主格 B 是宾格
如： She is taller than me.
主格 形容词比较级 宾格
（二）英语形容词比较级的构成
英语形容词比较等级有三个：原级，比较级和最高级。
形容词比较等级形式变化有规则的和不规则的两种。
规则变化
1）单音节词末尾加-er（比较级），-est（最高级）
【例】 原级 比较级 最高级
great greater greatest
small smaller smallest
clean cleaner cleanest
2）单音节如以e结尾，只加-r（比较级），-st（最高级）
【例】 fine finer finest
nice nicer nicest
wide wider widest
3）闭音节单音节词如末尾只有一个辅音字母，须先双写这个辅音字母，再加-er（比较级），-est（最高级）
【例】 big bigger biggest
hot hotter hottest
red redder reddest
4）少数以-y，-er，ow，-ble结尾的双音节词，末尾加-er（比较级），-est（最高级）。以-y结尾的词，如-y前是辅音字母，则变y为-i，再加-er和-est。以-e结尾的词只加-r和-st。
【例】 clever cleverer cleverest
narrow narrower narrowest
able abler ablest
easy easier easiest
5）其它双音节和多音节词皆在前面加单词more和most。
【例】 careful more careful most careful
difficult more difficult most difficult
delicious more delicious most delicious
不规则变化 weight的最高级
原级 比较级 最高级
good/well better best
bad worse worst
many/much more most
little less least
far farther/further farthest/furthest
注：有些形容词一般没有比较等级。如： right, wrong, woolen等。
形容词的比较等级的用法：比较级用于二者的比较。
【例】 Li Ping is older than Wang Hai. 李平比王海年纪大。
There are more students in Class One than in Class Two.一班比二班学生多
比较级的构成
  一、形容词级的构成
  1. 单音节形容词的比较级以及以-ly, -er, -ow结尾的形容词在词尾加-er；以e结尾的形容词在词尾直接加-r构成，重读闭音节双写末位字母再加er。dark→darker; quick→quicker; ; clever→cleverer; simple→simpler; narrow→narrower。
  2. 多音节形容词的比较级在其前加more构成。important→more important; beautiful→more beautiful。
  3. 表语形容词以及由分词变来的形容词，在其前加more构成。afraid →more afraid; interesting→more interesting; pleased→more pleased。
  4. 少数形容词的比较级是不规则的。
  good→better; bad→worse; far→farther / further。
  5.以y结尾的，把y变i，加er。early→earlier
基本句型
原级比较
  1. 由“．．．as + 形容词 + as．．．”或“．．．as + 形容词 + 名词 + as．．．”构成。
  My grandpa is as energetic as a young man.
  Exercise is as useful a way as any other to lose unwanted weight.
  I try to find as much information as I can about what happened.
  2. 由“．．．not so (as) + 形容词 + as．．．”或“．．．not so (as) + 形容词 + 名词 + as．．．”构成。
  Luckily the weather was not so wet as it is today.
不同级比较
  1. 由“……形容词比较级 + than．．．”构成。
  He is more concerned about others than about himself.
  2. 由“．．．many / much more + 可数 / 不可数名词 + than．．．”
  My friend earned much more money than I did last year.
特殊句型
  1. “比较级 + and + 比较级”或“more and more / less and less + 原级”结构表示“越来越……”的意思，与这类结构搭配的常用动词有grow, get, become等。
  She felt herself becoming more and more nervous.
  As the winter is drawing near, it's getting colder and colder.
  2. the + 比较级 + of the two + 名词。
  Jane is the taller of the two children in our family.
  3. “the + 比较级……，the + 比较级……”，表示“越……，越……”。
  The more magazines you sell, the more money you will get.
  4. “否定 + 比较级” 相当于最高级。
  — Wait until we get a satisfactory reply, will you?
  — I couldn't agree more. The idea sounds great to me.
  5. “a + 比较级 + 名词（than．．．）” 结构常出现在以never构成的完成时态的动词后面。
  How beautifully she sings！I have never heard a better voice.
  6. 倍数表示法：．．．times as + 形容词原级 + as．．．；
  ．．．times + 形容词比较级 + than．．．；．．．times the + 性质名词 + of．．．。
  The dining hall is three times as large as that one.
  The dining hall is three times larger than that one.
  The dining hall is three times the size of that one.
注意事项
  1. 为了避免重复, 常用the one代替单数可数名词, the ones, those 代替复数名词, that 代替单数或不可数名词。
  2. 当比较对象属于同一范围时，需使用other来排除自身，否则会造成与自身相比较的矛盾。
  Canada is larger than any other country in North America.
  3. “no + 形容词的比较级 + than”结构表达对两者均否定。
  Don't be proud so early. You are no better than me．
  4. 比较级前面可以用even, still, yet , any, much, rather, a little, a lot, by far等修饰语用以加强语气或表示比较程度。
  To tell you the truth, my boyfriend is much older than me.
考题思路
根据句中的关键词答题
  1. The new group of students is better-behaved than the other group who stayed here ______.
  A. early B. earlier C. earliest D. the earliest
  【解析】答案选B。做此题的关键词是new，即把“新来的学生”与“早些时候呆在这儿的学生”进行比较。全句意为：新来的这学生比早些时候呆在这儿的那些学生表现得更好些。
  2. —Do you need any help, Lucy?
  —Yes, the job is ______ I could do myself.
  A. less than B. more than C. no more than D. not more than
  【解析】答案选B。做此题要抓的关键词是yes，由于答话者对问话者的“你需要帮助吗？”作了肯定回答，说明答话者独自完成工作有困难，故填more than。
  3. Of the two coats, I’d choose the ______ one to spare some money for a book.
  A. cheapest B. cheaper C. more expensive D. most expensive

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