问题
选择题
______ many times, he finally understood it.
A．Told
B．Telling
C．Having told
D．Having been told
答案
Ｄ
考察分词用法。He与tell之间构成被动关系，且强调已经完成，故D正确。因为having been done表示已经完成和被动。
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______ many times, he finally understood it.
A．Told
B．Telling
C．Having told
D．Having been told
Ｄ
考察分词用法。He与tell之间构成被动关系，且强调已经完成，故D正确。因为having been done表示已经完成和被动。