特殊结构 A is to B what / as X is Y ; A+倍数或几分之几 as + adj. / adv . + as +B.
难点结构:as+adj.+n.+as 分句 和
as much/many + 名词+ as 分句
The work is not as difficult as you think.
This book is twice as thick as that one.
George is as efficient worker as Jack. = George is a worker(who is) as efficient as Jack. I don ’t want as expensive a car as this = I don ’t want a car as expensive as this
I can ’t drink as sweet coffee as this=I can’t drink coffee as sweet as this.
He took as much butter as he needed.
She has written as many essays as her brother( has).
特殊结构:the more … the more (越……越……); more and more (越来越)
This question is less difficult than that question. (比较对象为彼此独立的人或事物)
Iron is more useful than any other metal. (比较对象具有所属关系, 含有最高级含义) The city is becoming more and more beautiful.
superior, inferior , senior , junior , major , minor
He is three years senior to me.
This type of computer is superior to that type.
The Y angtze River is the longest river in China, but it is the third longest river in the world. The youngest member of the family is most successful.
Of all forms of energy , electricity is most widely used.
There are more wonders in heaven and earth than are dreamt of. ( than=than what …)
The medicine is more effective than is expected.
dead, deaf, empty , total, whole, perfect, complete, right, wrong, equal, daily false, final