The professor was delighted to find that two thirds of the projecthad already been finished by the students independently．教授高兴地发现学生们已独立完成了该项目三分之二的工作．题目和参考答案——青夏教育精英家教网—

题目内容

3．The professor was delighted to find that two thirds of the projecthad already been finished by the students independently．（finish）
教授高兴地发现学生们已独立完成了该项目三分之二的工作．

分析 "教授发现…"这一动作发生在过去，而学生完成工作应该在"发现"之前．所以发生在"过去的过去"，故应用过去完成时．又由于project和finish之间是被动关系，所以应用过去完成时的被动语态．

解答 had （already） been finished

点评考查语态和时态，要根据句子中的关键动词或时间状语判断．

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