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
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是副词,修饰后面的形容词/副词(如many/much); - 第二个
as是连词,引导比较对象(如the year before)。
- 第一个
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)。
- 倍数词位置:必须放在第一个
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
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)。
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.
- 同级比较必须成对使用
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).
- 修饰可数名词复数(如tractors)用many,不可数名词用much。
三、同类考点拓展
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.
- 倍数+比较级+than:
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.
- not as...as(不如…):
四、练习巩固
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.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。
