形容詞

11)倍數(shù)+ as + adj. + as　<=> 倍數(shù)+ the … + of。例如：

This bridge is three times as long as that one. 這座橋的長度是那座的三倍。

This bridge is three times the length of that one.

Your room is twice as large as mine. 你的房間是我的兩倍大。

Your room is twice the size of mine.

5. 形容詞最高級用法

the + 最高級 + 比較范圍

1)形容詞最高級前通常必須用定冠詞 the，例如：

The Sahara is the biggest desert in the world. 撒哈拉沙漠是世界上最大的沙漠。

形容詞most前面沒有the，不表示最高級的含義，只表示"非常"。例如：

It is a most important problem. =It is a very important problem. 這是個很重要的問題。

注意：使用最高級要注意將主語包括在比較范圍內(nèi)。

(錯)　Tom is the tallest of his three brothers.

(對)　Tom is the tallest of the three brothers.

2) 下列詞可修飾最高級，by far, far, much, mostly, almost。例如：

This hat is nearly / almost the biggest. 這帽子差不多是最大的了。

注意：

a. very可修飾最高級，但位置與much不同。

This is the very best.

This is much the best.

b. 序數(shù)詞通常只修飾最高級。例如：

Africa is the second largest continent.非洲是第二大洲。