为什么要加been?现在完成时的构成是“have(has)+过去分词 ”It has been raining for a week.为什么这里要加been?我觉得如果按照结构来的话 应该是:It has rained for a week.应为rain的过去分词是rained呀.不
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![为什么要加been?现在完成时的构成是“have(has)+过去分词 ”It has been raining for a week.为什么这里要加been?我觉得如果按照结构来的话 应该是:It has rained for a week.应为rain的过去分词是rained呀.不](/uploads/image/z/15024488-32-8.jpg?t=%E4%B8%BA%E4%BB%80%E4%B9%88%E8%A6%81%E5%8A%A0been%3F%E7%8E%B0%E5%9C%A8%E5%AE%8C%E6%88%90%E6%97%B6%E7%9A%84%E6%9E%84%E6%88%90%E6%98%AF%E2%80%9Chave%EF%BC%88has%EF%BC%89%2B%E8%BF%87%E5%8E%BB%E5%88%86%E8%AF%8D+%E2%80%9DIt+has+been+raining+for+a+week.%E4%B8%BA%E4%BB%80%E4%B9%88%E8%BF%99%E9%87%8C%E8%A6%81%E5%8A%A0been%3F%E6%88%91%E8%A7%89%E5%BE%97%E5%A6%82%E6%9E%9C%E6%8C%89%E7%85%A7%E7%BB%93%E6%9E%84%E6%9D%A5%E7%9A%84%E8%AF%9D+%E5%BA%94%E8%AF%A5%E6%98%AF%3AIt+has+rained+for+a+week.%E5%BA%94%E4%B8%BArain%E7%9A%84%E8%BF%87%E5%8E%BB%E5%88%86%E8%AF%8D%E6%98%AFrained%E5%91%80.%E4%B8%8D)
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