I'd be eternally grateful if...

Meaning

Expressing deep gratitude for a significant favor.

Examples

• John: I'm in a tight spot. <b>I'd be eternally grateful if</b> you could help me.
• Alice: Tell me what you need.
• John: If you could just give me a temporary loan, <b>I'd be eternally grateful if</b> you could.
• Alice: I'll see what I can do.