帮忙看下这些句子的语法问题吧
After scoring ten goals in the first half of the competition,the soccer players thought that they had ensured victory.想问一下这里用had ensured的意思是什么?还有如果had ensured victory 那部分改成a victory they would ensure为什么不对呢?
After he won the relay relatively easily,he decided to continue his training program and even to enter more races.
这里的won为什么错了呢?难道要改成had 但是after不是已经表明了时间先后顺序么?
Her parents' marriage gift cannot be compared with any present that was given to her at the time.这里的any present错了么?应该改成什么啊?