do的过去式

do是许多英语句式的重要构成单词，动词，意思为做。在一般现在时、一般过去时、一般将来时等多种时态下，do的变形也各有不同。

do的过去式

do的过去式是did。

do的意思：

v.做，干，办（某事）；（以某种方式）做；行动；表现；（问询或谈论时用）进展，进行

aux.用于实义动词前构成否定句和疑问句；构成附加疑问句；代替实义动词以避免重复

n.社交聚会；社交活动

n.（口语）事件；（主英国口语）诈骗；（主英国、新西兰口语）宴会；（口语）必须做到的事情

do的变形：

1、过去分词：done

2、现在分词：doing

3、第三人称单数：does

4、复数：dos

do的用法：

1、do用于一般现在时

例句：I often do my homework in the evening.

2. does用于第三人称单数的一般现在时

例句：He does his lessons every day.

3. did用于一般过去时

例句：They did homework yesterday.

4. doing常用于现在进行时或者非谓语动词（暂时不提）

例句：He is doing his homework now.

5. done常用于完成时，被动态或者非谓语动词(暂时不提)

例句：

He has done his homework.

He had done his homework before he went out.

His homework is done.

作为助动词，常用于疑问句和否定句。

1. 一般疑问句

例句：Do you like English?

2. 选择疑问句

例句：Does he go to school by bus or by bike？

3. 特殊疑问句

例句：How do you go to school？

4. 反义疑问句

例句：You like Englishdo't you？

5. 否定句

例句：I don't like English.

另外，也可以用于表示强调此时需要重读。

例句：He does need your help. （does重读，强调确实需要帮助）

还有，也可以代替其他的动词，使句子更简练。

例句：Who cleaned the windows？Tom did.