know/ nəu /

1.vt.[+facts] [ dates etc] 
知道

I don't know her address.
我不知道她的地址。
2.vt.[+language] 


I don't know Chinese very well.
我不怎么懂汉语。
3.vt.[+person] [ place] [ subject] 
(be acquainted with) 认识

I've known David for years.
我认识戴维很多年了。
He didn't know London very well.
他不怎么熟悉伦敦。
4.vt.
(recognize) 识别

He knew a good bargain when he saw one.
他很会识别便宜货。
to know that...
知道…
I knew that he lived in Glasgow.
我知道他住在格拉斯哥。
I knew at once that something was wrong.
我马上就知道有点不对头。
to know where/when
知道何处/何时…
do you know how to swim?
你会游泳吗?
everyone knew him as Robert
每个人都叫他罗伯特
to get to know sb
逐渐开始了解某人
to let it be known that...
使人们间接了解到…
to know sth about sb/sth
知道某人/某事的情况
She didn't know anything about music.
她对音乐一窍不通。
to know about sth
听说过某事
I don’t know about that
我不这么认为
yes, I know
对,的确如此
you never know
很难讲
to know of sth/sb
听说过某事/某人
you know
你得知道
The conditions in there are awful, you know.
你得知道,那里的条件很差。
5.vt.
(in explanations) 你知道的

the white dress, you know, the one with the short sleeves
白色连衣裙,你知道的,就是短袖的那件
to know better (than to do sth)
明白而不至于(做某事)
you should know better than to do that
你应该知道不该那样做
to be in the know
知情