问题
选择题
(2013·天津新华中学二次月考)________ several times,he still couldn't understand how to operate the machine.
A.Telling
B.Having told
C.To be told
D.Having been told
答案
答案:D
句意:尽管已经被告知好多次了,他还是不能理解怎么操作这台机器。根据句意可知,tell和he之间为逻辑上的动宾关系,应用v.ed形式;同时,被告知的动作发生在understand之前,应用完成时,故选D。