gratitude用法固定搭配（congratulations用法及搭配）

gratitude常用表达是show/express/convey/extend one's gratitude to sb.(for sth.)“因为某事向某人表达感谢”，with gtatitude（满怀感谢地）， 例如：

I would like to express my gratitude to everyone for their hard work.我要对所有辛勤劳动的人表示感谢（摘自《牛津词典》）(本句中用了express one's gratitude to sb.for sth.)

He smiled at them with gratitude.他向他们笑了笑表示谢意（摘自《牛津词典》）