I expressed my gratitude to the man at the BBC.我向英国广播公司的人表达了感激之情。

My heart filled with gratitude for his kindness.我心里非常感激他的好意。

He never lost his sense of gratitude to the country that had given him a home.对于这个给了他安身立命之所的国家, 他一直心存感恩。