fractions

fractions的音标是[ˈfresŋkəz]；基本翻译为分数；速记技巧为：分数词尾如果是y则变i再加eth。

英文中的分数（fractions）一词源于拉丁语“fracxio”，意为“分割”。在英语中，分数通常用数字和/或字母表示，如1/2（二分之一），3/4（四分之三）等。

分数的变化形式包括分子和分母的互换、增加或减少零等。例如，将分子和分母互换位置可以得到倒数（reciprocal），如2/3的倒数为3/2。分数也可以通过添加或减少零来改变，如将分数3/4变为3/5，即增加了零。

相关单词包括以下几种：

1. 分子（numerator）：表示分数中正方形的数量。

2. 分母（denominator）：表示分数中矩形的数量。

3. 倒数（reciprocal）：与分数互为倒数的关系，表示两个数之间的比值关系。

4. 除法（division）：将一个数除以另一个数得到商，可以用分数表示商。

5. 通分（reduction）：将分数通分后得到更小的分数，以便于加减运算。

6. 约分（simplification）：将分数约分后得到更简单的分数形式。

7. 分数加法（addition of fractions）：将两个分数相加得到新的分数。

8. 分数减法（subtraction of fractions）：将两个分数相减得到新的分数。

9. 整数（integer）：表示不能被其他数整除的数。

10. 小数（decimal）：表示分数的小数形式，如0.75表示四分之三。

常用短语：

1. one-third

2. two-fifths

3. one-eighth

4. three-quarters

5. half

6. two-thirds

7. one-fourth

双语例句：

1. Our class accounts for one-third of the total number of students.

我们的班级占学生总数的三分之一。

2. The box contains two-fifths of apples.

这个盒子里装着五分之二的苹果。

3. One-eighth of the work has been completed.

工作已经完成了八分之一。

4. Three-quarters of the money was spent on food and drink.

四分之三的钱花在食物和饮料上了。

5. Half of the students passed the exam.

一半的学生通过了考试。

6. Two-thirds of the class are girls.

这个班级三分之二是女生。

7. One-fourth of the land is covered by forest.

四分之一的土地被森林覆盖。

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.