学习中学英语应怎样写好比较结构的句子？石家庄中学英语老师为学员举例讲解：
考生病句：
1、Comparing with the bike, the car runs much faster.
2、The climate in Walton is colder than other cities.
正确表达：
1、Compared with the bike, the car runs much faster.
2、The climate in Walton is colder than that of other cities.
评议与分析：许多中学生在作文中用compare或than表示比较，但相当多表达有误。
在例1中，对两个事物进行比较句式为Compared with A, B...,只能用compare过去分词，不能用现在分词，因为B是分词逻辑主语，只能被比较。在例2中，考生误将“天气”与“城市”进行比较，而二者没有可比性，只有将后者改为“其他城市天气”才符合逻辑，很显然，考生错误是受了汉语表达习惯影响。比较结构是常用结构，正确地使用这一结构可以使文章句式增加变化，有利于提高写作成绩。一般说来，考生若能恰当、正确地运用这一结构，其英语写作成绩应在5分以上。
一、the more…the more…结构
1 、The harder you work, the greater progress you will make.
2 、The more a man knows, the more he discovers his ignorance.
二、对比
1、 Motion is absolute while stagnation is relative.
2 、He is tired out, whereas she is full of vigour.
注意：while 和whereas均可用于连接两个意义对立分句，相当于汉语“而”字。许多考生能较好地运用这一句式，尤其在图表作文中。
三、选择比较
1、 I prefer staying at home to going out.
2 、They prefer to work rather than (to) sit idly.
3 、He prefers to work alone.
注意：1）句用是Prefer A to B结构，to为介词，后接名词或动名词；2）句是以不定式作prefer宾语；3）句用法同，只是不把rather than部分表达出来
四、*级
1、This is the most interesting book I've ever read.
2、Of all his novels I like this one best.
五、比较级
1、Children now enjoy better medical treatment than before.
2、We can live longer without food than we can (live ) without water.
六、同级比较
1、In 1998 we produced as many cars as we did in the previous five years.
2、We have accomplished as much in the past three years as would have taken ten years in the past.
