比较级

1.比较级

English is easier than Chinese。
He has more books than you。
She drinks more milk than her baby。
一般来说英语比较讨厌重复所以后面与前面重复的部分要省略。
Mikes likes me btter than Ed （likes me）。
Rachel is taller than Mary （is）。
He is richer than （he was ）before。

2.比较级中的those 或者that （一般用于复合名词间的比较）

还是同样原则，避免重复，后面比较对象用that 或者those表示
The population of China is larger than USA。
这里population 和后面的USA不是一个对象，所以不对。
正确的是 The population of China is larger than the population of USA。
前后the population 重复因此需要改为：
The population of China is larger than that of USA。
按照以上规律，省略的或者用that或者those替代的仅仅是比较对象，其他保持不变。例如：
The shoes made in China are cheaper than those made in Korea。
比较对象shoes，made in China是定语不需要省略
The climate of Korea is milder than that of Canada。
比较对象是climate，定语是of 。。。不需要省略。

3.比较级的一致或者说比较对象的一致

The nights are longer in winter that in summer。
in winter 和in summer之间比较。此外，The nights 由于不是复合名词（没有后置定语修饰）所以省略，而且不需要that、those 代替
My method for studying English differs from hers/her method.
4.最高级中不加the的情况
a）范围不确定
Jane is the most beautiful girl in our class. 有范围比较要加the
Jane is a most beautiful girl. 无范围不需要
b）所有格前面
He is her youngest son。
c）同一对象中或者说自己和自己比较
This lake is the deepest at the point。
d）副词前的最高级不需要
也就是v+adv中的adv不需要
例如
He runs fastest。
Who came last。

5. 比较数值时候的。。。times+as+形容词+as。。。

This box is four times as big as that one
This river is two times as long as that one。
This apple is three times as big as that one。