has been是谓语动词后面非谓语动词用啥形式？

Question

如题所述

Answer 1

在英语中，谓语动词后面的非谓语动词的形式要根据具体情况而定。如果非谓语动词是动词不定式，那么其形式为"to + 动词原形"，例如："He has been trying to learn English." 如果非谓语动词是动词的-ing形式，那么其形式为"动词-ing"，例如："She has been swimming in the pool for an hour." 如果非谓语动词是过去分词，那么其形式为"动词过去分词"，例如："The book has been read by many people."

Answer 2

不是非谓语动词
has been done现在完成时被动语态（谓语）
Extensive research has been done into this disease. 对这种疾病已进行了广泛研究。
来源：《牛津词典》
has been doing 现在完成进行时（谓语）
Takashi has been doing this job for five years. 隆从事这份工作已经五年了。