grateful与appreciative这两个形容词均有“感谢的、感激的”之意。
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。
- If you could get that report finished by Thursday, I'd be very grateful.
如果你能在周四之前完成那份报告，我将感激不尽。 - After the earthquake we felt grateful to be alive.
地震后，我们大难不死，真是应该感谢上苍。 - I'm just grateful that I'm not still working for him.
真是谢天谢地，我现在不再为他工作了。
appreciative与greatful基本同义，但语气较强，侧重以行动或言语来感谢。
- It's nice to have an appreciative audience.
给有欣赏力的观众表演感觉很好。 - I'm very appreciative of all the support you've given me.
你一直那么支持我，我非常感激。
（拓展学习：熟词僻义 | appreciate 能提升什么价值？）
