In the humanities, authors write to inform you in many ways. These methods can be classified into three types of informational writing: factual, descriptive and process.
在人文学科中，作者可以通过多种写作方式告知读者信息。这些方法可分为三类信息写作题材：事实性、描述性和解说性。
Factual writing provides background information on an author, composer or artist, or on a type of music, literature or art.
事实性写作提供了一位作家、作曲家或艺术家或者是一种音乐、文学或艺术的背景信息。
Examples of factual writing include notes on a book jacket, or album cover and longer pieces, such as an article describing a style of music, which you might read in a music appreciation course. This kind of writing provides a context for your study of the humanities.
事实性写作包括封面上的说明和专辑封面，较长的作品如音乐鉴赏课中可能读到的描述一种音乐风格的文章。这种写作题材为人文学科研究提供了依据。
As its name implies, descriptive writing simply describes, or provides an image of a piece of music, art or literature.
正如它的名字所暗示的，描写性写作指简单的描述或为一段音乐、一种艺术和文学树立一种形象。
For example, descriptive writing might list the colors an artists used in the painting, or the instrument a composer included in a musical composition, so as to make pictures or sound in the readers' mind, by calling up specific details of the work.
例如，描写性写作可能介绍一位艺术家在画中用过的色彩，或一位乐器作曲家在音乐作品中所用的乐器。通过具体描述，在读者的脑海里留下声音的图画。
Descriptive writing in the humanities, particularly in literature, is often mixed with critical writing.
人文学科中的描写性写作，特别在文学中，经常与评论式写作共同使用。
Process writing explains a series of actions that bring about result. It tells the reader how to do something. For example, explaining the technique used to shoot a film.
解说性写作是解释会带来某种结果的一系列的行动。它告诉读者如何做某事，例如，拍电影的技术。
This kind of writing is often found in art, where understanding how an art has created a certain effect is important.
这种写作往往用于艺术中，因为理解艺术家如何创造了一种特定效果是很重要的。
Authors may actually use more than one type of technique in a given piece of informational writing.
在一篇指定的信息写作中，作者可以运用多种写作技巧。