Language is the most important method of human communication. 语言是人类最重要的交流方式。

　　People sometimes use gestures, numbers, pictures or any other method to communicate with others. 人们有时会用手势、数字、图片或其他方法与他人交流。

　　However, language must be the most effective and easiest way to express oneself. 然而，语言一定是表达自己最有效、最简单的方式。

　　Language is divided into spoken language and written language. 语言分为口语和书面语。

　　Because some spoken languages don't have written forms. 因为有些口语没有书面形式。

　　There are at least five thousand spoken languages in the world. 世界上至少有五千种口语。

　　Among them, Mandarin, a Chinese language is the most commonly spoken language. 其中，中国的普通话是最常用的口语。

　　And English is the most widely spoken language. 英语是使用最广泛的语言。