英語六級語法攻略：解鎖“as + 形容詞”用法

在英語六級考試中，語法作為考察學生語言綜合能力的重要一環(huán)，其掌握程度直接影響著最終成績。其中，“as+形容詞”結(jié)構(gòu)因其靈活性和高頻出現(xiàn)，成為英語六級語法中必須攻克的關(guān)鍵語法點。這一結(jié)構(gòu)看似簡單，實則蘊含豐富用法，正確運用能提升表達的準確性和流暢度。本文將從結(jié)構(gòu)特點、用法場景及常見誤區(qū)三方面展開，結(jié)合實例解析這一語法的核心要點。

一、基礎(chǔ)結(jié)構(gòu)

“as+形容詞原級+as”是該結(jié)構(gòu)的標準形式，用于表達兩者在程度上的平等關(guān)系。例如：

“This room is as big as that one.”（這個房間和那個一樣大。）

“He runs as fast as you.”（他跑得和你一樣快。）

否定句或疑問句中，需將第一個“as”替換為“so”：

“He cannot run so/as fast as you.”（他跑得不如你快。）

當中間插入名詞時，需調(diào)整格式：

“This is as good an example as the other is.”（這個例子和另一個一樣好。）

“I can carry as much paper as you can.”（我能帶的紙和你一樣多。）

二、倍數(shù)表達

若需強調(diào)倍數(shù)差異，需將倍數(shù)詞置于“as”前：

“This room is twice as big as that one.”（這個房間是那個的兩倍大。）

“This bridge is three times as long as that one.”（這座橋是那座的三倍長。）

等價表達為“倍數(shù)+the+名詞+of”結(jié)構(gòu)：

“This bridge is three times the length of that one.”（同上）

“Your room is twice the size of mine.”（你的房間是我的兩倍大。）

三、常見誤區(qū)

誤區(qū)1：混淆倍數(shù)與比較級

錯誤：“This room is two times bigger than that one.”

正確：“This room is twice as big as that one.”

誤區(qū)2：名詞位置錯誤

錯誤：“Fetch me some as fresh as milk as this.”

正確：“Fetch me some milk as fresh as this.”（名詞需緊隨比較結(jié)構(gòu)）

誤區(qū)3：否定句中誤用“as”

錯誤：“He doesn’t run as fast as you.”（否定句需用“so”）

正確：“He cannot run so/as fast as you.”

四、實戰(zhàn)應(yīng)用

真題示例：

“Ten years ago the population of our village was _______ that of theirs.”

A. as twice large as

B. twice as large as

C. twice as much as

D. as twice much as

答案：B。

解析：選項A、D的倍數(shù)詞位置錯誤，應(yīng)置于“as”前；選項C中“much”修飾不可數(shù)名詞，而“population”需用“l(fā)arge/big”修飾；選項B符合“倍數(shù)+as+adj.+as”的標準結(jié)構(gòu)。

掌握“as+形容詞”結(jié)構(gòu)不僅是英語六級語法的核心考點，更是提升語言表達精準度的關(guān)鍵。通過理解其結(jié)構(gòu)特點、靈活運用倍數(shù)表達、規(guī)避常見誤區(qū)，考生能在寫作和翻譯中更準確地表達比較關(guān)系。建議考生通過專項練習鞏固知識點，結(jié)合真題分析掌握出題規(guī)律，實現(xiàn)語法能力的全面提升。