送钱的时候该说什么？

很简单:请笑纳.

Congratulations!(用来恭贺）
Thank you for your help~(开后门。。。）

这是点小意思，你不要我跟你急呀！

it's a little case. if you don't want, i'll be annoyed to you!

请务必收下吧,我求你了.
For the God's sake to accept it.I beg you.

please kindly accept.

Thank you for your support!