现在完成进行时(The Present Perfect Continuous Tense)表示由过去某时持续到现在的动作,由“have(has)been+现在分词”构成: It has been raining for three hours. 一连下了三个钟头的雨。 She has been working the whole morning. 她工作一上午了。 That’s... 阅读全部 »

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