一 比较级的前后内容要一致。that代替前面的单数名词，those代替前面的复数名词。

    1 我的头发比你的长。

       正确：My hair is longer than yours.(yours=your hair)

       错误：My hair is longer than you.

    2 The weather in beijing is colder than that in Hainan.北京的天气比海南的天气冷。

    3 The sheep in Australia are more than those in China.澳大利亚的绵羊比中国的绵羊多。

二 比较级前可用一些表程度的状语。如：a lot,a little,a bit,much,even,still,by far 等。

    1 The sun is much bigger than the moon. 太阳比月亮大得多。

    2 This coat is a little smaller than that one.这件上衣比那件小一点儿。

三 比较级＋and＋比较级=越来越……

    1 I'm more and more interested in English.我对英语越来越感兴趣了。

    2 It's getting darker and dark.天越来越黑。

四   The+比较级……，the+比较级……＝越……就越……

    1 The more you eat,the fatter you will be.你吃得越多就长得越胖。

五  the+比较级+of the two＝两者中较……得一个

    1 I'd like the smaller one of the two apples.我想要两个苹果中较小得那个。

六 不能将比较一方包括在比较对象中。

                                       anyone else.

    1 Tom is taller than  any other student in his class. 汤姆比他班上的任何一个学生都高。

                                       the other students.

                                       any of the others.

      ＝No one is taller than Tom in his class.

巩固练习：

   ★ 句子改错★

     1 My carrot is bigger than you.

     2 The boy is very taller than the girl.

     3 The hare becomes thin and thinner.

     4 This is larger country of the two.

   参考答案：

 1 you----yours  2 very----much  3 thin----thinner  4 larger----the larger