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    1. have has doing是什么時(shí)態(tài)

      回答
      瑞文問(wèn)答

      2024-06-06

      have has doing是現(xiàn)在完成時(shí)進(jìn)行。
      現(xiàn)在完成進(jìn)行時(shí),是英語(yǔ)中動(dòng)詞的一種基本時(shí)態(tài),其構(gòu)成為:主語(yǔ)+助動(dòng)詞(have/has)+been+動(dòng)詞的現(xiàn)在分詞+其他成分。表示動(dòng)作從某一時(shí)間開始,一直持續(xù)到現(xiàn)在,或者剛剛終止,或者可能仍然要繼續(xù)下去。

      擴(kuò)展資料

        The car must have been doing at least 100 miles an hour.

        這車速肯定每小時(shí)至少100英里。

        Biological systems have been doing this for billions of years

        生物系統(tǒng)億萬(wàn)年來(lái)一直都是這樣。

        Some scientists have been doing research on artificial internal organs.

        一些科學(xué)家一直在研究人造內(nèi)臟。

        It is said the industrial production has been doing well.

        據(jù)說(shuō)工業(yè)生產(chǎn)一直很好。

        China has been doing its bit to act the part.

        中國(guó)一直在盡力的做它應(yīng)該做的事情。

        He has been doing mass work and engaged in scientific research.

        他一直從事群眾工作和科學(xué)科研工作。