替角

例句：

1. 1. He was agreat substitute for the injured player.
   他为受伤的球员提供了一个很好的替代。
2. 2. The substituteteacher quickly adjusted to theclassroom environment.
   这位替补老师很快就适应了教室环境。
3. 3. She wasthe substitute teacher for theabsent teacher.
   她作为缺席老师的替代教师。