陈述句是一种叙事、描写、说明、议论性的句子，它给听话人或读者以信息，一般应包括新的信息。在非对话中，陈述句出现的数量最多。在对话中，当一个人连续说一段话时，也可以有陈述句。陈述句又可以分为几类，我们称作语体。主要有叙述体、描写体、说明体、论说体。
Declarative sentence is a narrative, descriptive, explanatory, and argumentative sentence, which is intended for listeners or readers. In terms of information, it should generally include new information. In non-dialogue, the declarative sentence appears the most many. In a dialogue, when a person speaks a paragraph continuously, there can also be declarative sentences. Declarative sentences can be divided into several categories, which we call styles. There are mainly narrative, descriptive, explanatory and argumentative.