Phrases Asking for Favors or Assistance

I'd be eternally grateful if...

C2

Meaning

Expressing deep gratitude for a significant favor.

Example sentences

John: I'm in a tight spot. I'd be eternally grateful if you could help me.

Alice: Tell me what you need.

John: If you could just give me a temporary loan, I'd be eternally grateful if you could.

Alice: I'll see what I can do.