过去时#一般过去时#否定句#疑问句#英语语法#动词时态#初级英语约 2 分钟
一般过去时的否定句与疑问句
摘要
一般过去时用于描述过去发生的动作或状态。掌握其否定和疑问形式是构建完整过去时态表达的关键。本文将系统讲解如何通过助动词 did 和 not 来构成否定句，以及如何通过 did 引导疑问句，并对比规则动词与不规则动词的变化，帮助学习者准确描述过去未发生的事件或进行提问。
核心规则
- 否定句构成：对于一般动词（非be动词），在动词原形前加助动词 did not (缩写为 didn't)，后面动词保持原形。
- 结构：主语 + did not (didn't) + 动词原形 + 其他。
- 例如：She did not like the movie. / She didn't like the movie.
- 疑问句构成：将助动词 Did 置于句首，后面接主语和动词原形。
- 结构：Did + 主语 + 动词原形 + 其他？
- 例如：Did you finish your homework?
- be动词的过去时 (was/were)：其否定和疑问形式较为特殊，直接在 was/were 后加 not 构成否定，或将 was/were 提前构成疑问句。
- 否定：I was not (wasn't) happy. / They were not (weren't) at home.
- 疑问：Was she tired? / Were you busy yesterday?
常见误区
- 误在动词后加 -ed：在使用了 did 或 didn't 的句子中，主要动词必须用原形。
- 错误：He didn't watched TV. (误)
- 正确：He didn't watch TV. (正)
- 混淆 did 与 was/were：在含有 be 动词过去时的句子中，构成否定和疑问时无需使用 did，应直接对 was/were 进行操作。
- 错误：Did she was at school? (误)
- 正确：Was she at school? (正)
例句与解析
- 否定句：They didn't visit the museum last weekend. (他们上周末没有参观博物馆。)
- 解析：主语 They，助动词 didn't，动词原形 visit。
- 一般疑问句：Did your brother call you yesterday? (你哥哥昨天给你打电话了吗？)
- 解析：句首 Did，主语 your brother，动词原形 call。
- 特殊疑问句：Why didn't you tell me the truth? (你为什么没有告诉我真相？)
- 解析：疑问词 Why 开头，后接否定结构 didn't you tell。
高频词与短语
- yesterday (昨天)
- last week/month/year (上周/上个月/去年)
- ago (以前，如：two days ago 两天前)
- did not (didn't) (不，没有)
- was not (wasn't) (不是，用于单数主语和I)
- were not (weren't) (不是，用于复数主语和you)
- in 2020 (在2020年)
- at that time (在那时)
自测练习
- 将下列句子改为否定句：She played tennis yesterday.
- 参考答案：She didn't play tennis yesterday.
- 将下列句子改为一般疑问句：He finished his work on time.
- 参考答案：Did he finish his work on time?
3. 改正句子中的错误：We didn't went to the party.
- 参考答案：We didn't go to the party.