4.12 the + 最高级 + 比较范围
 
1) The Sahara is the biggest desert in the world.
  形容词最高级前通常必须用定冠词 the,副词最高级前可不用。
  形容词most前面没有the,不表示最高级的含义,只表示"非常"。
   It is a most important problem.
   =It is a very important problem.
注意: 使用最高级要注意将主语包括在比较范围内。
    (错) Tom is the tallest of his three brothers.
    (对) Tom is the tallest of the three brothers.

2) 下列词可修饰最高级,by far, far, much, mostly, almost
   This hat is nearly / almost the biggest.
注意:
 a.  very可修饰最高级,但位置与much不同。
      This is the very best.
      This is much the best.
 b.  序数词通常只修饰最高级。
      Africa is the second largest continent.

3) 句型转换:
   Mike is the most intelligent in his class.
   Mike is more intelligent than any other students in his class.

4) "否定词语+比较级","否定词语+ so… as"结构表示最高级含义。
        Nothing is so easy as this.
       =Nothing is easier than this.
       =This is the easiest thing.