You don't have to ask for my permission. 你不需要得到我的允许。
Why didn't you just ask me for the money? 你为什么没有向我借钱?
She didn't really ask for you, she asked for me. 她找的其实不是你,而是我。
I need to ask for some help here. 我得找个人来帮帮忙了。
You name it. What can I do for you? 说说看,我能不能帮到你?