预习是课前自学的简称。一般是指在老师讲课以前,先自己独立地阅读新课内容,做到初步理解,并做好知识上的准备工作,这个自学过程就叫预习。预习从时间和内容上说,大致可以分为三种:课前预习,是在老师讲课以前先自学下一节课要讲的新内容;阶段预习,指预习下一个阶段的学习内容,范围往往是一章或几章,需要一个比较完整的时间才能进行;学期预习,指开学前 Preview is short for self-study before class. Generally refers to the teacher before lecturing, first independently read the content of the new lesson, to achieve a preliminary understanding, and knowledge of the preparatory work, this self-learning process is called preview. Pre-learning from the time and content that can be roughly divided into three types: pre-class preview, is to teach the class before the teacher to learn the next lesson to be new content; stage preview, that pre-learning the next stage of the learning content, often in the range Is a chapter or chapters, requires a more complete time to carry out; semester preview, refers to pre-semester