had not 的缩写
had not 的标准缩写形式是 hadn't。
这是英语中常见的助动词 had 与否定词 not 的缩略组合,广泛用于过去完成时(Past Perfect Tense)的否定句中。
基本结构
完整形式:subject + had + not + past participle
缩写形式:subject + hadn't + past participle
例句对比
- 完整句:She had not finished her homework.
缩写句:She hadn't finished her homework. - 完整句:They had not seen the movie before.
缩写句:They hadn't seen the movie before. - 完整句:I had not eaten breakfast when you called.
缩写句:I hadn't eaten breakfast when you called.
使用场景
hadn't 主要用于表达在过去某一时间点之前尚未完成的动作或状态,常见于:
- 叙述过去的经历(如讲故事)
- 解释因果关系(“因为没做某事,所以……”)
- 与另一个过去动作进行时间对比