初中英语中“倍数”的表达PPT课件
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英语中倍数的表达方式归纳 PPT
(has)、 He has got three times as many books as
his sister (has)、
倍英语中“倍数”得表达方式归纳数
6、 “… times + what 从句” 例如:
The length of the road is four times what it was three years ago、 这条路得长度就是三年前得 4 倍。 The price of the meat is twice what it was last year、 肉价就是去年得两倍。
倍英语中“倍数”得表达方式归纳数
三、用 again (一倍)double (两倍),triple (三倍 )fourfold (四倍)等词表示倍数。例如:
My Aunt is as old again as I am、 我姑姑得年龄比我大一倍。 The top-brand clothes are often sold as double the normal price here、 这里名牌衣服得售价经常比正常得售价高一倍。 The new work procedure tripled the output、 新工艺使产量增加两倍。 The output of grain increased fourfold、 粮食产量增加了三倍。
This table is long、 This table is as long as that one (is)、 This table is three times as long as
that one (is)、
This dictionary thick、
This dictionary is as thick as that one (is)、
his sister (has)、
倍英语中“倍数”得表达方式归纳数
6、 “… times + what 从句” 例如:
The length of the road is four times what it was three years ago、 这条路得长度就是三年前得 4 倍。 The price of the meat is twice what it was last year、 肉价就是去年得两倍。
倍英语中“倍数”得表达方式归纳数
三、用 again (一倍)double (两倍),triple (三倍 )fourfold (四倍)等词表示倍数。例如:
My Aunt is as old again as I am、 我姑姑得年龄比我大一倍。 The top-brand clothes are often sold as double the normal price here、 这里名牌衣服得售价经常比正常得售价高一倍。 The new work procedure tripled the output、 新工艺使产量增加两倍。 The output of grain increased fourfold、 粮食产量增加了三倍。
This table is long、 This table is as long as that one (is)、 This table is three times as long as
that one (is)、
This dictionary thick、
This dictionary is as thick as that one (is)、
英语中倍数的表达方法 课件 24张PPTPPT下载
注：当相比的对象B很明显时，than （as，of）B常被省去。
2. Increase N times 句型有三种 变体：
increase to n times increase n times／n-fold
increase by n times/increase by a factor of n
slow down等词替代
英语中倍数的表达方法 课件 24张PPTPPT下载
英语中倍数的表达方法 课件 24张PPTPPT下载
第三组： There is a n-fold
decrease/reduction… 应译为：减 至1/n [或：减少（n一1）/n]。 Eg. A rapid decrease by a factor of 7 was observed． 发现迅速减少到 1/7。
英语中倍数的表 达方法和译法
表示倍数的词包括如下一些： times, 数字+fold, (tenfold), by the factor of 数字， （by the factor of 4 )
倍数增加的句型集合
1. Be N times 有三种句型变体： A is n times as great（long，
•
2对教育来说，阅读是最基础的教学手 段，教 育里最 关键、 最重要 的基石 就是阅 读。
•
3但是现在，我们的教育在一定程度上 ，还不 够重视 阅读， 尤其是 延伸阅 读和课 外阅读 。
•
4. “山不在高，有仙则名。水不在深 ，有龙 则灵” 四句， 简洁有 力，类 比“斯 是陋室 ，惟吾 德馨” ，说明 陋室也 可借高 尚之士 散发芬 芳
英语中倍数的表达方法 课件 24张PPTPPT下载
翻译练习
2. Increase N times 句型有三种 变体：
increase to n times increase n times／n-fold
increase by n times/increase by a factor of n
slow down等词替代
英语中倍数的表达方法 课件 24张PPTPPT下载
英语中倍数的表达方法 课件 24张PPTPPT下载
第三组： There is a n-fold
decrease/reduction… 应译为：减 至1/n [或：减少（n一1）/n]。 Eg. A rapid decrease by a factor of 7 was observed． 发现迅速减少到 1/7。
英语中倍数的表 达方法和译法
表示倍数的词包括如下一些： times, 数字+fold, (tenfold), by the factor of 数字， （by the factor of 4 )
倍数增加的句型集合
1. Be N times 有三种句型变体： A is n times as great（long，
•
2对教育来说，阅读是最基础的教学手 段，教 育里最 关键、 最重要 的基石 就是阅 读。
•
3但是现在，我们的教育在一定程度上 ，还不 够重视 阅读， 尤其是 延伸阅 读和课 外阅读 。
•
4. “山不在高，有仙则名。水不在深 ，有龙 则灵” 四句， 简洁有 力，类 比“斯 是陋室 ，惟吾 德馨” ，说明 陋室也 可借高 尚之士 散发芬 芳
英语中倍数的表达方法 课件 24张PPTPPT下载
翻译练习
英语中倍数的表达方法 课件 24张PPT
英语中倍数的表达方法 课件 24张PPT
英语中倍数的表达方法 课件 24张PPT
注：在这类句型中increase常被raise， grow，go/step up，multiply等词 所替代。
英语中倍数的表达方法 课件 24张PPT
英语中倍数的表达方法 课件 24张PPT
Increase by 句型翻译的证据 这一结构产生误解 的概率很高 往往误
Population has increased by 200 %in the past 25 years.
人口在过去 25 年内增加了 200 % (即增加两 倍) 。
its output of cotton went up by 20 percent. 它的棉花产量增长了20 % 。
英语中倍数的表达方法 课件 24张PPT
英语中倍数的表达方法 课件 24张PPT
英语中倍数的表达方法 课件 24张PPT
翻译练习
1.This book is three times as long as that one.
2. The dictionary is exactly five times more expensive than that one.
5. The drain voltage （漏电压） has been increased by a factor of four.
6. The output of chemical fertilizer has been raised five times as against l986．
英语中倍数的表达方法 课件 24张PPT
英语中倍数的表达方法 课件 24张PPT
7. If the resistance is doubled without changing the voltage ,the current becomes only half strong.
英语中倍数的表达方法 课件 24张PPT
注：在这类句型中increase常被raise， grow，go/step up，multiply等词 所替代。
英语中倍数的表达方法 课件 24张PPT
英语中倍数的表达方法 课件 24张PPT
Increase by 句型翻译的证据 这一结构产生误解 的概率很高 往往误
Population has increased by 200 %in the past 25 years.
人口在过去 25 年内增加了 200 % (即增加两 倍) 。
its output of cotton went up by 20 percent. 它的棉花产量增长了20 % 。
英语中倍数的表达方法 课件 24张PPT
英语中倍数的表达方法 课件 24张PPT
英语中倍数的表达方法 课件 24张PPT
翻译练习
1.This book is three times as long as that one.
2. The dictionary is exactly five times more expensive than that one.
5. The drain voltage （漏电压） has been increased by a factor of four.
6. The output of chemical fertilizer has been raised five times as against l986．
英语中倍数的表达方法 课件 24张PPT
英语中倍数的表达方法 课件 24张PPT
7. If the resistance is doubled without changing the voltage ,the current becomes only half strong.
英语倍数表达法课件
Special expressions for English multiple The structure of "multiple+more+noun+than"
Summary word: This structure is used to express how many times a quantity is greater than another quantity, and emphasizes that this quantity is less than another quantity.
Summary word: This structure is used to express how many times a quantity is equal to another quantity, and emphasizes that this quantity is equal to another quantity.
Avoid using inappropriate comparative structures
01
Comparison objects should have similarity: When comparing two objects, it is important to ensure that they have similarity in certain aspects for a reasonable comparison.
Detailed description
The basic form of this structure is "multiple+as+objective+as", where "multiple" represents a multiple, "as" is a conjunction, and "objective" is an adjective used to describe the properties of the compared object. "as" is followed by another compared object. For example, "two as high as" means "twice the height of...".
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英语中“倍数”的表 达方式归纳
倍数英语中“倍数”的表达方式归 纳
The house rent is expensive. I've got about half the space I had at home and I'm paying _______ here. A. as three times much B. as much three times C. much as three times D. three times as much
sister (has).
倍英语中“倍数”的表达方式归纳 数
6. “… times + what 从句” 例如：
The length of the road is four times what it was three years ago. 这条路的长度是三年前的 4 倍。 The price of the meat is twice what it was last year. 肉价是去年的两倍。
classroom.
倍英语中“倍数”的表达方式归纳 数
2. “… times +as + 形容词 / 副词的原级＋ as …” 例如：
This table is three times as long as that one. 这张桌子是那张桌子的三倍长。 This dictionary is five times as thick as the one you borrowed from the library. 这本词典的厚度是你从图书馆借的那本（厚度） 的 5 倍。
倍英语中“倍数”的表达方式归纳 数
5. “… times +as many （或 much ）＋名词＋ as …” 例如：
We‘ve produced twice as much cotton this year as （ we did ） ten years ago. 今年我们生产的棉花比十年前多了一倍。（汉语 中的多一倍实际上也指两倍一样多。）
He earns five times more money than he did ten years ago. 他现在挣的钱比十年前挣的多 5 倍。 There are twice more students in our class than in theirs. 我们班的学生人数比他们班多两倍。
正确答案为 D
倍英语中“倍数”的表达方式归纳 数
一、用 times 表示倍数（一般限于包括基数在内三 倍或三倍以上的数。表示两倍的数，一般用 twice ）。其句式有：
1. “… times ＋形容词 / 副词的比较级＋ than …” 例如：
Line AB is three times longer than line CD. 线段 AB 是（线段） CD 的三倍长。 This hall is five times bigger than our classroom. 这个大厅比我们的教室大 5 倍。
This table is long. This table is as long as that one (is). This table is three times as long as that one (is).
This dictionary thick. This dictionary is as thick as that one (is). This dictionary is five times as thick as that one
倍英语中“倍数”的表达方式归纳 数
7. “… times + up on （或 over ）…”例如：
The size of the sun is a million times over that of the earth. 太阳的体积比地球的体积大一百万倍。 He is three times up on your age. 他的年龄是你的 4 倍（或：比你的年龄大 3 倍）。
Line AB is long. Line AB is longer than line CD. Line AB is three times longer than line CD.
This hall big. This hall bigger than our classroom. This hall is five times bigger than our
(is). This dictionary is five times as thick as the one you
borrowed from the library (is).
倍英语中“倍数”的表达方式归纳 数
3. “… times + the + 名词（如： size， height， weight， length， width 等）＋ of …” 例如：
He has got three times as many books as his sister. 他拥有的书的数量是他妹妹的 3 倍。
We‘ve produced much cotton this year We‘ve produced as much cotton this year as
（ we did ） ten years ago. We‘ve produced we did ） ten years ago.
He has got many books. He has got as many books as his sister (has). He has got three times as many books as his
The earth is 49 times the size of the moon. 地球的体积是月球的 49 倍。 This river is three times the depth of that one. 这条河是那条河的三倍深。
倍英语中“倍数”的表达方式归纳 数
4. “… times + more ＋名词＋ than …” 例如：
倍数英语中“倍数”的表达方式归 纳
The house rent is expensive. I've got about half the space I had at home and I'm paying _______ here. A. as three times much B. as much three times C. much as three times D. three times as much
sister (has).
倍英语中“倍数”的表达方式归纳 数
6. “… times + what 从句” 例如：
The length of the road is four times what it was three years ago. 这条路的长度是三年前的 4 倍。 The price of the meat is twice what it was last year. 肉价是去年的两倍。
classroom.
倍英语中“倍数”的表达方式归纳 数
2. “… times +as + 形容词 / 副词的原级＋ as …” 例如：
This table is three times as long as that one. 这张桌子是那张桌子的三倍长。 This dictionary is five times as thick as the one you borrowed from the library. 这本词典的厚度是你从图书馆借的那本（厚度） 的 5 倍。
倍英语中“倍数”的表达方式归纳 数
5. “… times +as many （或 much ）＋名词＋ as …” 例如：
We‘ve produced twice as much cotton this year as （ we did ） ten years ago. 今年我们生产的棉花比十年前多了一倍。（汉语 中的多一倍实际上也指两倍一样多。）
He earns five times more money than he did ten years ago. 他现在挣的钱比十年前挣的多 5 倍。 There are twice more students in our class than in theirs. 我们班的学生人数比他们班多两倍。
正确答案为 D
倍英语中“倍数”的表达方式归纳 数
一、用 times 表示倍数（一般限于包括基数在内三 倍或三倍以上的数。表示两倍的数，一般用 twice ）。其句式有：
1. “… times ＋形容词 / 副词的比较级＋ than …” 例如：
Line AB is three times longer than line CD. 线段 AB 是（线段） CD 的三倍长。 This hall is five times bigger than our classroom. 这个大厅比我们的教室大 5 倍。
This table is long. This table is as long as that one (is). This table is three times as long as that one (is).
This dictionary thick. This dictionary is as thick as that one (is). This dictionary is five times as thick as that one
倍英语中“倍数”的表达方式归纳 数
7. “… times + up on （或 over ）…”例如：
The size of the sun is a million times over that of the earth. 太阳的体积比地球的体积大一百万倍。 He is three times up on your age. 他的年龄是你的 4 倍（或：比你的年龄大 3 倍）。
Line AB is long. Line AB is longer than line CD. Line AB is three times longer than line CD.
This hall big. This hall bigger than our classroom. This hall is five times bigger than our
(is). This dictionary is five times as thick as the one you
borrowed from the library (is).
倍英语中“倍数”的表达方式归纳 数
3. “… times + the + 名词（如： size， height， weight， length， width 等）＋ of …” 例如：
He has got three times as many books as his sister. 他拥有的书的数量是他妹妹的 3 倍。
We‘ve produced much cotton this year We‘ve produced as much cotton this year as
（ we did ） ten years ago. We‘ve produced we did ） ten years ago.
He has got many books. He has got as many books as his sister (has). He has got three times as many books as his
The earth is 49 times the size of the moon. 地球的体积是月球的 49 倍。 This river is three times the depth of that one. 这条河是那条河的三倍深。
倍英语中“倍数”的表达方式归纳 数
4. “… times + more ＋名词＋ than …” 例如：