在英语学习中，动词的时态变化是不可或缺的一部分，而掌握常见动词的过去式更是基础中的基础。今天，我们就来聊聊一个简单却又容易被忽略的问题：如何正确使用“知道”的过去式？
“知道”的英文单词是 "know"，它是一个不规则动词，这意味着它的过去式并非简单的在词尾加 "-ed"。 "know" 的过去式是 " knew " ，过去分词则是" known "。
为了帮助大家更好地理解和记忆，以下是一些例句：
I knew him when we were in college. (过去式)
译：我上大学的时候就认识他了。
She has known him for many years. (现在完成时)
译：她认识他已经很多年了。
The truth was known by everyone. (被动语态)
译：每个人都知道真相。
除了 "knew"，"know" 还有一个比较少见的过去式 " wist "，以及过去分词 " wist " 或 " wust "。 但是，这些形式已经过时，只在一些文学作品中偶尔出现，现代英语中已经很少使用了。
学习英语，掌握基础的语法规则至关重要。希望通过这篇文章，大家能够更加了解 "know" 的过去式，并在日常的英语学习和使用中更加得心应手。
拓展：英语中常见的不规则动词
英语中有很多动词的过去式是不规则的，需要单独记忆。以下列举一些常见的不规则动词：
| 原型 | 过去式 | 过去分词 | 例句 |
|---|---|---|---|
| see | saw | seen | I saw him yesterday. |
| go | went | gone | He has gone to school. |
| eat | ate | eaten | I have eaten breakfast. |
| take | took | taken | She took my book. |
| give | gave | given | They gave me a present. |
| come | came | come | He came to my house. |
建议大家可以通过制作单词卡片、例句练习等方式，加强对不规则动词的记忆和掌握。
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