know：现在分词： knowing过去式： knew过去分词： known

know：

v.知道;知悉;了解;认识到;懂得;意识到;确信;确知;肯定

例句：

It would be unwise to comment on the situation without knowing all the facts.

不全面了解情况就对局势妄加评论是不明智的。

She wouldn't change it, even though she knew it was wrong.

尽管她知道这错了，她也不肯改变。

The true consequences will only be known several years hence.

真正的后果只有在几年之后才能知道。