过去式： knew.
第三人称单数： knows.
现在分词： knowing.
过去分词： known.
英 [nəʊ] 美 [noʊ]。
v.知道，知悉，了解;认识到，懂得，意识到;普遍认为，皆知;确信，确知，肯定;熟悉，认识;精通，熟悉（书、音乐或艺术等）;熟知（过程或系统）;懂，会说（某种语言）;把……看作是，认为……是;将……称为;能认出;能区分;学会，掌握;看到过，听到过;亲身体验。
n.知识;知晓，知情。
例句：
Do you know his address?
你知道他的地址吗？
The cause of the fire is not yet known.
火灾的原因尚不清楚。
All I know is that she used to work in a bank (= I have no other information about her) .
我只知道她曾在银行工作过。
I know (that) people's handwriting changes as they get older.
我知道人们的笔迹随着年龄的增长而变化。
It is widely known that CFCs can damage the ozone layer.
众所周知氯氟烃会破坏臭氧层。
I knew where he was hiding.
我知道他藏在哪里。
I didn't know what he was talking about.
我不知道他在谈什么。
薄荷红茶cheer
