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After the new technique was introduced, the factory produced twice ____ many tractors in 1988 as the year before. 🟨

answer

as
引进新技术之后,工厂在1988年的拖拉机产量是上一年的两倍。

这道题考查的是**“倍数+as...as”比较结构**的用法。虽然你蒙对了答案,但理解背后的语法规则对掌握考点至关重要。以下是详细解析:

一、语法规则解析

  1. 核心结构
    “倍数词(twice/three times) + as + 形容词/副词 + as”
    表示“A是B的多少倍”。

    • 第一个as副词,修饰后面的形容词/副词(如many/much);
    • 第二个as连词,引导比较对象(如the year before)。
  2. 句中关键成分

    • 倍数词位置:必须放在第一个as之前(如twice as many...)。
    • 比较对象:需用as引导(如as the year before)。
  3. 例句对比

    原句:
    After the new technique was introduced, the factory produced twice as many tractors in 1988 as the year before.
    翻译:
    引进新技术后,工厂在1988年的拖拉机产量是上一年的两倍。

    类似结构:
    Your bag is twice as expensive as mine.
    (你的包比我的贵一倍).

二、易混淆点与常见错误

  1. 误用其他比较结构

    • ❌ 错误:twice more tractors than...
    • ✅ 正确:twice as many tractors as...
      原因more than用于差级比较(如“比…多”),而as...as用于同级比较(需搭配倍数词)。
  2. 忽略as的固定搭配

    • 同级比较必须成对使用as...as,不可省略第一个as
      例如:
      ❌ This book is twice interesting as that one.
      ✅ This book is twice as interesting as that one.
  3. 形容词/副词选择

    • 修饰可数名词复数(如tractors)用many,不可数名词用much
      例如:
      ✅ twice as many books as...(可数)
      ✅ twice as much water as...(不可数).

三、同类考点拓展

  1. 其他倍数结构

    • 倍数+比较级+than
      The factory produced three times more tractors than before.
    • 倍数+the size/amount of
      The room is twice the size of mine.
  2. 否定比较

    • not as...as(不如…):
      This year’s profit is not as high as last year’s.
    • not so...as(较正式):
      He is not so diligent as his brother.

四、练习巩固

  1. 改错题
    ❌ The new model uses half energy than the old one.
    ✅ The new model uses half as much energy as the old one.
    解析:energy不可数,需用much,且固定搭配为as...as.

  2. 翻译题
    “这座桥的长度是那座桥的三倍。”
    → The bridge is three times as long as that one.


通过以上分析,可以总结出:倍数词必须紧接第一个as,且比较结构中as...as不可拆分。掌握这一规则后,类似题目便能迎刃而解。如需进一步练习,可以参考网页7中的例句和结构。

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