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-"Is Bob still performing?" ❌

-"I'm afraid not. He is said ____ (leave) the stage already as he has become an official."

answer

to leave ❌ to have left ✅

首先,leave作“离开”讲时是不及物动词,没有被动形式;
其次,句中的already表示完成概念;
最后,be said to do表示“据说”,其后接to do形式;综合之下故填表示主动兼完成的to have left。

“鲍勃还演戏吗?”“恐怕没有,据说他已经离开舞台成为一名官员了。”

🌟 彻底解析:为什么必须用 to have left

🔍 核心语法规则

  1. 固定结构be said to do(据说做某事)

    • 根据时间状语 already(已经)可知,"离开舞台"动作 已完成 → 需用 不定式完成式to have left
    • 对比:

      He is said to leave the stage.
      (据说他将离开 → 动作未发生)
      He is said to have left the stage.
      (据说他已离开 → 动作已完成)

  2. 错误答案分析

    • to leave ❌:
      忽略时间副词 already,无法体现动作的完成性,导致时态矛盾

⚡ 高频考点总结

📚 不定式完成式的使用场景

  1. 动作先于主句谓语发生

    She seems to have forgotten the meeting.
    (她似乎忘了会议 → 忘记发生在“看似”之前)

  2. 搭配完成时间状语(already, ever, just 等):

    He is believed to have arrived already.
    (据信他已到达)


📝 强化训练

  1. The painting is reported ______ (sell) for $1 million.
answer

to have been sold
(画作被报道已售出 | 被动 + 完成)

  1. The scientist is known ______ (discover) the theory in 2020.
answer

to have discovered
(已知科学家在2020年发现理论 | 动作明确完成)

  1. They are said ______ (travel) to 30 countries so far.
answer

to have traveled
(据说他们已旅行30国 | so far 强调累积完成)


💡 口诀记忆

"be said 后接完成式,already 出现别忘记!"
(类似动词:be believed/reported/known + to have done)

我只身前行 却仿佛带着一万雄兵