英语中的条件句用来对过去、现在或将来发生的事情或情况作出假设。在对过去的情景作出假设、假想时，应该使用 “第三类条件句（the third conditional）”。这类句子的典型结构是：“If + 主语 + 过去完成时，主语 + would have + 过去分词”。看视频，快速学习 ...

With the third conditional, Elena, we are often talking about something that might have happened, but didn't. As your example illustrates, when we are discussing such past situations we normally use ...

We use the third conditional when we want to imagine a different past to that which actually occurred. In this episode of the flatmates, Sophie says the following to Alice. "We wouldn't have had ...