知道的过去式是什么 _过去式

know是一个英语单词，可以用做动词、名词，过去式knew 。
动词：知道; 了解; 认识; 确信
名词：知情
读音：英 [n??] 美 [no?]
过去式：knew
过去分词：known
现在分词：knowing
第三人称单数：knows

例句：

1. I don't know the name of that place.
我不知道那个地方的名字。
2.Frank was a friend of mine.I'd known him for nine years.
弗兰克是我的一位朋友。我和他认识9年了。
3.We have heard about this, but the details are not very clear.
我们听说过这件事，但对详情不是很清楚。

双语例句：
要求学生说出自己所知道的动词及其过去式。
Can you say some verbs and the past form?
利用教师的亲身经历巩固动词过去式并学习新单词，学生感兴趣并知道把所学知识运用到实际生活当中。
The teacher show a passage about her trip to Chengde. Let the students fill the blanks with the correct past tense words. Then learn the new words.
你们都知道，在过去，我们从我们的客户那得到的反馈事实上是，我们的开放模式绝大多数都是黑匣子导向式的。
In the past, you know, some of the feedback that we got back from our customers was the factthat our development paradigms were pretty much black-box oriented.