常見例句雙語例句To grasp the usage of the present perfect tense.掌握現(xiàn)在完成時態(tài)的用法。www.td-school.org.cnIt is not easy to learn to use the present perfect tense correctly.學習正確使用現(xiàn)在完成時不是容易的事。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)在完成時相比,當我們談起美國大學的生活時,他們顯得更為興奮。edu.sina.com.cn 返回 the present perfect tense