Give my regards to... ：向……问好。
这是让对方代自己向别人问好时的用语。也可以说"send my regards to"。
1. Do give my regards to Harry.
2. We're sorry not to have seen Mary. Tell her we send her our regards.
3. Please give my sincere regards to all the members of your family.
A: How are your parents these days? 最近你父母身体好吗？
B: Oh, they're fine, still very active and enjoying their retirement.
A: Oh, good. That's nice to hear. Please give my best regards to them when you're home.
B: Sure, thank you. 一定。谢谢你。