______many times ,he finally undertood it.A.Told B.Having been told

问题描述:

______many times ,he finally undertood it.A.Told B.Having been told
1._many times,he finally understood it
A.Told B.Having been told B
2._time,the postman refused to deliver our letters unless we chained our dog
A Bitten B.Having bitten
为什么这两道题不一致呢,既然第二道题用bitten,第一道题为什么不用told

亲:第一题是完成时的被动式,强调完成;第二题是一般时的被动式.只要认准被动式即可.第二题的B不是被动式.记住:完成式的动词先于谓语动词.亲:谓语动词与分词之间有同时和完成。你觉得是同时还是完成啊?