1. 完成用法
“完成用法”表示过去发生的动作对现在造成的影响或结果。常与recently, before, so far, up to now, till now, in the past/ last+时间段, these days等时间状语连用。
*The famous writer has written a new book in the past two years.
那位著名的作家在过去的两年里写了一本新书。
*The Browns have visited a lot of places in China so far.
迄今为止, 布朗一家人已经参观了中国的许多地方。
*Have you seen her parents these days?
这些天你看见她的父母了吗?
