three times in a row, the boxer

参考答案:

答案C知识点现在分词的被动式的定义现在分词的被动式概念：现在分词的被动式表示它的逻辑主语是现在分词动作的承受者。现在分词的被动式的知识扩展现在分词的被动式表示其逻辑主语为现在分词动作的承受者。1、现在分词的一般被动式。如：The building being built is our library.正在建的那栋楼是我们的图书馆。The question being discussed is of great importance.正在讨论的问题非常重要。2、现在分词的完成被动式。 如：Having been warned by the teacher, the students didn’t make such mistakes.老师警告他们之后，学生们不再犯这样的错误了。Having been told many times , he still did not know how to do it.（人家）已经告诉他多少次了，他还是不知道怎么做。