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    1. have sth doing是什么時(shí)態(tài)

      回答
      瑞文問答

      2024-08-15

      現(xiàn)在完成時(shí)進(jìn)行,F(xiàn)在完成進(jìn)行時(shí),是英語中動(dòng)詞的一種基本時(shí)態(tài),其構(gòu)成為:主語+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

        現(xiàn)在完成進(jìn)行時(shí)基本句型:

        肯定式第一人稱have been doing sth.

        疑問式:Have+第一人稱+been doing sth.

        簡略回答:Yes,第一人稱 have.No,第一人稱 haven't.

        肯定式:第三人稱+has been doing sth.

        疑問式:Has+第三人稱been doing sth.

        簡略回答:Yes,第三人稱has.No,第三人稱hasn't.

        1)表示一個(gè)在過去開始而在最近剛剛結(jié)束的行動(dòng),如:

        Ann is very tired. She has been working hard.

        Why are your clothes so dirty? What have you been doing?

        2)表示一個(gè)從過去開始但仍在進(jìn)行的行動(dòng),如:

        It has been raining for two hours.(現(xiàn)在還在下)

        Jack has been feeling very well recently.

        3)表示一個(gè)從過去開始延續(xù)到現(xiàn)在,可以包括現(xiàn)在在內(nèi)的一個(gè)階段內(nèi),重復(fù)發(fā)生的行動(dòng),如:

        She has been playing tennis since she was eight.

        4)現(xiàn)在完成時(shí)強(qiáng)調(diào)動(dòng)作行為的結(jié)果、影響,而現(xiàn)在完成進(jìn)行時(shí)只強(qiáng)調(diào)動(dòng)作行為本身,如:

        Tom’s hands are very dirty. He has been repairing the car.

        The car is going again now. Tom has repaired it.

        標(biāo)志:

        1、句中常有延續(xù)性動(dòng)詞。

        2、時(shí)間點(diǎn)前有since。