Question

（）the rewards of his hard work many times

（）the rewards of his hard work many times before Uncle Li determined to further his studies and works at being promoted again.
A to experience B experiencing
C expetienced D having experienced
求关于此类问题的解题思路，对这类问题一直似懂非懂

Answer 1

（）the rewards of his hard work many times before Uncle Li determined to further his studies and works at being promoted again.
A to experience B experiencing
C experienced D having experienced
答案选 D having experienced

解题的思路就是关键词before。
你看，主句Uncle Li determined to further his studies and works at being promoted again是一个过去时的句子，而主句之前正颂亩丛好有before这个单词，所以前面的从句应该用过去完成时或者相当于过去完成时的表达式。

以往已经好多次感受到辛勤劳动的回报，野樱
Uncle Li是：
A. 将要耐戚感受to experience吗？不是。而是已经 感受到。
B. 正在感受experiencing吗？不是。而是已经 感受到。
C. 被动感受experienced吗？不是。而是他实实在在地主动感受，而且已经感受到好几次。

所以抓住关键词是一语中的，起到事半功倍的效果。

加油，每天努力，你就进步！