最近动态
2022-04-25 20:39 发起提问
2021-02-20 12:28 关注了问题
2021-02-20 12:28 关注了问题
2021-02-20 12:27 关注了问题
2021-02-20 12:27 关注了问题
2021-02-20 12:27 关注了问题
2021-02-20 12:27 关注了问题
2021-02-20 12:27 关注了问题
2021-02-20 12:27 关注了问题
2021-02-20 12:25 回答问题
有时现在完成时的用法会概括成：①【过去持续至今的动作】They have been in London for five days. / Mary has watched TV for three hours.②【至今的经验】Bill is not here. He has gone to the shops. / Have you ever seen that girl? ③【积累至今的次数等】She has been to Shanghai many times. / Mr. Brown has written two books.我认为你说的经历性用法就是以上的第③点。