grateful : 普通用词，侧重因对方的恩惠、好意或帮助，从内心产生的感激之情。
- I'm so grateful (to you) for all that you've done.
- If you could get that report finished by Thursday, I'd be very grateful.
- After the earthquake we felt grateful to be alive.
- I'm just grateful that I'm not still working for him.
- I would be most grateful if you would send me the book immediately.
- It's nice to have an appreciative audience.
- I'm very appreciative of all the support you've given me.