C2
Having + V3, S + V · Having been + V3, S + V
Having done 与 Having been done
讲解
完成式分词短语明确表示该动作发生在主句动作之前，比 after 和“在……之后”都更简练。被动形式是 having been V3。分词短语的主语必须与主句主语一致，不一致时必须写明，构成独立分词结构。 常见陷阱：两部分的主语必须一致：Having read the annexe, her support was withdrawn ✗，she withdrew her support ✓。
例句
Having read the annexe, she withdrew her support.
读完附录后，她撤回了支持。
Having been warned twice, he resigned.
两次被警告之后，他辞职了。
Having finished the report, we sent it out.
写完报告后，我们把它发了出去。
The report having been signed, the file was closed.
报告签署后，档案被封存。
练习
通过选择题测试你的掌握程度
高效学习“Having + V3, S + V · Having been + V3, S + V”
语法点“Having + V3, S + V · Having been + V3, S + V”（Having done 与 Having been done）是 CEFR 6 级别的重要结构之一。要熟练运用这个结构，你需要弄清楚它的使用语境，并经常练习。
学习小贴士：把例句大声朗读多遍，培养自然的语感反应。然后试着结合自己的生活情境造句。用发音按钮听标准发音并跟着练习。
你也可以查看完整课程“”，更深入地了解相关的语法和词汇。