know的過去式是什麼

過去式是knew，例如：

1、She knew she had only to call and he would come running.她知道只要打個電話，他就會高高興興地照辦。

2、Except that we knew what it was. And we knew how to fix it. 除非我們知道是怎麼一回事，以及我們知道如何修復。

3、My father would turn in his grave if he knew.我父親知道的話在九泉之下也會不得安寧的。