A conditional is used to talk about a possible or imaginary situation ( the condition) and the consequences (or the result) of it.

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 ...

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 ...

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