表示动作、行为、心理活动、发展变化等的词叫动词。动词按能不能带宾语分为及物动词和不及物动词。后边可以直接带宾语的动词叫及物动词。后边不能直接带宾语的动词叫不及物动词。动词的否定形式是在动词前面加上"不"或"没（有）"。
Words indicating actions, behavior, mental activities, changes and developments, etc. are called verbs. Verbs can be grouped into transitive verbs and intransitive verbs according to whether they take an object. Verbs that can be followed immediately by an object are called transitive verbs. Verbs that can't immediately take an object are called intransitive verbs. Verbs are negated by the negative adverbs "不" or "没（有）".

一. 动词的用途：
    Functions:

1. 作谓语。 As the predicate. 我喜欢北京。 I like Beijing.
   我站在长城上。 I am standing on the Great Wall.
2. 作主语。 As the subject.
   动词作主语时要有一定的条件：谓语需由形容词或表示"停止、开始、判断"一类的动词充当。
   A verb can be used as subject on condition that the predicate of the sentence must be an adjective or a verb expressing the ideas of "stop, start or judge". 浪费可耻。 Waste is disgraceful.
   比赛结束了。 The match ended.
3. 作定语。 As an attributive.
   动词作定语时后边要用助词"的"。
   的must be added to a verb used as an attributive. 你有吃的东西吗？ Do you have something to eat?
   他说的话很正确。 What he said is correct.
4. 作宾语。 As the object. 我喜欢学习。 I like studying .
   我们十点结束了讨论。 We ended the discussion at 10 o'clock.
5. 作补语。 As a complement. 我听得懂。 I can understand.
   他看不见。 He can't see it.
6. 作状语。 As an adverbial adjunct.
   动词作状语时后边要用助词"地"。
   "地" must be added to a verb used as an adverbial adjunct. 他父母热情地接待了我。 His parents welcomed me with open arms.
   学生们认真地听老师讲课。 The students listen to the teacher attentively.

二. 使用动词时，要注意下面几个问题。
    Points that merit special attention.

汉语里动词的形式是不变的，动词的形式不受人称、性别、单复数、时间等的影响。例如：
Chinese verbs have no morphological changes whatsoever resulting from person, gender, number, time, etc.. For example:

我是学生。 I am a student.
她是老师。 She is a teacher.
他们是工人。 They are workers.
我正在写作业。 I am doing my homework.
我每天下午写作业。 I do my homework every afternoon. 
我写了作业。 I did my homework. 

1. 动词后边加助词"了"，表示动作行为已经完成。
   The particle "了" is suffixed to a verb to emphasize a completed action. For example: 我读了一本书。 I finished reading a book.
   他走了。  He left.
2. 动词后边加助词"着"，表示动作正在进行或状态在持续。例如：
   The particle "着" is suffixed to a verb to show a progressive action or continuous state. For example: 我们正上着课。  We are having classes.
   门开着呢。  The door is opening.
3. 动词后边加助词"过"，表示动作曾经发生过或曾经有过某种经历。例如：
   The particle "过" is suffixed to a verb to place special stress on a certain experience in the past. For example: 我去过北京。  I have been to Beijing.
   我曾经看过这本书。  I've ever read this book.