在线视频国产欧美另类,偷拍亚洲一区一区二区三区,日韩中文字幕在线视频,日本精品久久久久中文字幕

<small id="qpqhz"></small>
  • <legend id="qpqhz"></legend>

      <td id="qpqhz"><strong id="qpqhz"></strong></td>
      <small id="qpqhz"><menuitem id="qpqhz"></menuitem></small>
    1. have是什么時(shí)態(tài)的標(biāo)志

      回答
      瑞文問(wèn)答

      2024-09-20

      現(xiàn)在完成時(shí)是英文時(shí)態(tài)的一種。
      現(xiàn)在完成時(shí)的用法:
      主語(yǔ)+have(has)+過(guò)去分詞(done);
      現(xiàn)在完成時(shí)用來(lái)表示現(xiàn)在之前已發(fā)生過(guò)或完成的動(dòng)作或狀態(tài),但其結(jié)果卻和現(xiàn)在有聯(lián)系,也就是說(shuō),動(dòng)作或狀態(tài)發(fā)生在過(guò)去但它的影響現(xiàn)在還存在。

      擴(kuò)展資料

        現(xiàn)在完成時(shí)可以用來(lái)表示發(fā)生在過(guò)去某一時(shí)刻的,持續(xù)到現(xiàn)在的情況,常與for,since連用.

        Mary has been ill for three days.

        I have lived here since 1998.

        現(xiàn)在完成時(shí)往往同表示不確定的過(guò)去時(shí)間狀語(yǔ)連用,如already, yet, just, before, recently,still, lately等:

        He has already obtained a scholarship.

        I haven't seen much of him recently (lately).

        We have seen that film before.

        Have they found the missing child yet