及物动词：

1.知道，了解，懂得(+that/wh-)

2.认识，熟悉

3.认出，辨别(+by/from)

4.体验，经历

5.（仅用于过去时和完成时）见到过，听到过

6.精通（语言等）

不及物动词：

1.知道，了解，懂得(+about)

2.知道（关于……的事），听说过（……的事）(+of)

词形变化

形容词knowable，knowing，known

名称knower

时态knew，known，knowing，knows

单词分析

这些动词都含“懂，知道，明了”之意。

know普通用词，多指通过学习、经验或他人传播而得到知识，含直接知道的意味。

learn通常指通过他人而获得消息或情况，侧重从不知到知的变化过程。

comprehend侧重熟悉了解的过程。

understand指对事物已有彻底的认识，不仅知其性质、含义和细节，而且了解其内外的关系。

英语解释

perceive as familiar

be able to distinguish, recognize as being different

know the nature or character of

know how to do or perform something

have fixed in the mind

have firsthand knowledge of states, situations, emotions, or sensations

be familiar or acquainted with a person or an object

be cognizant or aware of a fact or a specific piece of information; possess knowledge or information about

be aware of the truth of something; have a belief or faith in something; regard as true beyond any doubt

the fact of being aware of information that is known to few people

accept (someone) to be what is claimed or accept his power and authority

have sexual intercourse with