maths book为什么加s

因为math是mathematics的缩写，所以maths book要加s。

例句

1.

He can't grasp the basic concepts of mathematics.

他无法掌握数学的基本概念。

2.

Mathematics was never my strong point.

数学从来不是我的强项。

3.

I am sensible of the fact that mathematics is not a popular subject.

我知道数学课不受欢迎。