原文是
We are attaching a coupon for a markdown on any one of the following car wash
packages, which you will need to present upon receiving the services:
^^^^^^^^^^^^^^^^^^^^^^^^
1. Xxxxxxxxx
2. Xxxxxx
3. Xxxxxx
我们附上下列任何一样洗车套组减价优惠卷，当您来接受服务时，您需要出示优惠卷：
我想请问最后 “receiving the services” 为什么
要这样用？能用”when you receive the services 就好吗？
这个文化用法又叫什么？还能用在哪些地方呢？
谢谢