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Throwback Thursday S1 #98 - Could Have, Should Have, Would Have (And Negatives)
2025/3/13
Learn English | EnglishClass101.com
A
Alisha
Alisha: 本节课讲解情态动词could have, should have, would have 的含义、否定形式和区别。首先，could have 的肯定式表示过去可能发生的事情，例如：'If I had known you were throwing a surprise party, I could have helped.' 否定式could not have 表示过去不可能发生的事情，例如：'No, that couldn't have been Sarah in the cafe just now. She's at the office.' 需要注意的是，could have 只表达可能性，不涉及计划或遗憾。
接下来是should have。肯定式表达对过去未做之事感到后悔，例如：'I should have studied more when I was in school.' 这里表达的是说话人过去学习不够，现在感到后悔。否定式should not have 表示对过去已做过的事情感到后悔，例如：'I shouldn't have spent so much time playing video games when I was a kid.' 这里表达的是说话人过去玩游戏时间太多，现在感到后悔。
最后是would have。肯定式表示过去未实现的计划，例如：'I would have arrived on time today, but there was terrible traffic, so I did not arrive on time.' 这里表达的是说话人本来计划准时到达，但因为交通堵塞而未能如愿。否定式would not have 表示过去未实现的计划或愿望的缺乏，常用于给出建议时谈论他人的选择，例如：'If I were you, I wouldn't have quit my job before I found a new position.' 这里表达的是如果我是你，我不会在找到新工作之前就辞职。
总而言之，could have 表示可能性，should have 表示遗憾，would have 表示计划或愿望。这三个表达及其否定形式非常相似，但表达的侧重点不同，需要根据语境仔细辨析。
Deep Dive
This chapter explores the meaning and usage of "could have" in its positive and negative forms. It focuses on expressing past possibilities, differentiating it from plans or regrets. Examples illustrate how "could have" describes actions that were possible but didn't happen.
- Positive 'could have' expresses past possibilities
- Negative 'could not have' expresses past impossibilities
- Focuses solely on possibility, not plans or regrets
Shownotes Transcript
learn more about: could have, should have, would have