request unit chain

例句：

1. 1. I requested a meeting with themanager to discuss our project.
   我请求与经理会面讨论我们的项目。
2. 2. Theteacher requested that all studentsattend the assembly.
   老师要求所有学生参加集会。
3. 3. He requested a refundfor the damaged goods.
   他要求退款赔偿损坏的商品。