例句：
I can't express how grateful I am.
我说不出我有多么感激。
These refugees are very grateful to the government's succor.
这些难民非常感激政府的救援。
I am grateful for all your past kindness.
多蒙关照,万分感激。
I'd be grateful if you should let me know as soon as possible.
你若能让我尽快知道,我会很感激的。
The trees afford grateful shade.
这些树能为（行人)提供纳凉之所。