fractions的音標是[?fres?k?z];基本翻譯為分數;速記技巧為:分數詞尾如果是y則變i再加eth。
英文中的分數(fractions)一詞源于拉丁語“fracxio”,意為“分割”。在英語中,分數通常用數字和/或字母表示,如1/2(二分之一),3/4(四分之三)等。
分數的變化形式包括分子和分母的互換、增加或減少零等。例如,將分子和分母互換位置可以得到倒數(reciprocal),如2/3的倒數為3/2。分數也可以通過添加或減少零來改變,如將分數3/4變為3/5,即增加了零。
相關單詞包括以下幾種:
1. 分子(numerator):表示分數中正方形的數量。
2. 分母(denominator):表示分數中矩形的數量。
3. 倒數(reciprocal):與分數互為倒數的關系,表示兩個數之間的比值關系。
4. 除法(division):將一個數除以另一個數得到商,可以用分數表示商。
5. 通分(reduction):將分數通分后得到更小的分數,以便于加減運算。
6. 約分(simplification):將分數約分后得到更簡單的分數形式。
7. 分數加法(addition of fractions):將兩個分數相加得到新的分數。
8. 分數減法(subtraction of fractions):將兩個分數相減得到新的分數。
9. 整數(integer):表示不能被其他數整除的數。
10. 小數(decimal):表示分數的小數形式,如0.75表示四分之三。
常用短語:
1. one-third
2. two-fifths
3. one-eighth
4. three-quarters
5. half
6. two-thirds
7. one-fourth
雙語例句:
1. Our class accounts for one-third of the total number of students.
我們的班級占學生總數的三分之一。
2. The box contains two-fifths of apples.
這個盒子里裝著五分之二的蘋果。
3. One-eighth of the work has been completed.
工作已經完成了八分之一。
4. Three-quarters of the money was spent on food and drink.
四分之三的錢花在食物和飲料上了。
5. Half of the students passed the exam.
一半的學生通過了考試。
6. Two-thirds of the class are girls.
這個班級三分之二是女生。
7. One-fourth of the land is covered by forest.
四分之一的土地被森林覆蓋。
英文小作文:
The importance of fractions cannot be overstated in mathematics and science, as they help us to understand and measure the world in a more precise way. For example, when we talk about fractions in cooking, we can easily calculate how much of each ingredient to use to achieve a specific taste or texture. Similarly, in finance, fractions are essential for understanding how money is divided between different uses, such as savings, investments, and expenses.
However, fractions are not only useful for practical applications. They also help us to understand mathematical concepts such as ratios and proportions, which are fundamental to many disciplines, including geometry, algebra, and calculus. In conclusion, fractions are an essential tool for understanding and analyzing the world around us, and they should be used and appreciated wherever possible.
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