常見(jiàn)例句雙語(yǔ)例句To grasp the usage of the present perfect tense.掌握現(xiàn)在完成時(shí)態(tài)的用法。www.td-school.org.cnIt is not easy to learn to use the present perfect tense correctly.學(xué)習(xí)正確使用現(xiàn)在完成時(shí)不是容易的事。blog.sina.com.cnThey appear more excited when we talk about university life in the United States than when we discuss the correct usage of the present perfect tense.與討論如何正確使用現(xiàn)在完成時(shí)相比,儅我們談起美國(guó)大學(xué)的生活時(shí),他們顯得更爲(wèi)興奮。edu.sina.com.cn 返回 the present perfect tense