本文讲解考研英语语法之【动词的三种非谓语形式】。语法是英语学习的基础，语法大关不过，阅读、完型、翻译和写作都会有难度，就别提过线和拿高分了。所以说，基础阶段，语法基础要打好。请关注新东方在线2020考研英语语法大全系列文章，我们一起来梳理考研英语所需的基础语法和重点语法：
动词的三种非谓语形式
(1)动词不定式：to study (to + 动词原形)
(2)分词：studying (现在分词)、studied (过去分词)
(3)动名词：studying (形式与现在分词相同)
动词非谓语形式仍具有动词的一般特征，可以带有宾语、状语等构成短语。
动词非谓语形式有以下几种形式变化(以write为例)：
| 形态 | 主动 | 被动 | |
| 动词不定式 | 一般 | To write | To be written |
| 进行 | To be writing | ||
| 完成 | To have written | To have been written | |
| 完成进行 | To have been writing | ||
| 现在分词和动名词 | 一般 | Writing | Being written |
| 完成 | Having written | Having been written | |
| 一般 | written |