(D)My uncle has been here____.

问题描述:

(D)My uncle has been here____.
A) for five o'clock B)since five hours C)five hours ago D)since five o'clock
答案我知道了,谁告诉下,

D现在完成时态,has been here 表示一个持续的动作,沟边接表示时间段的时间状语.有“for+时间段”与“since+时间点”两种.