adj.不感激的;不领情的;忘恩负义的;讨厌的;
例句:
All happy people are grateful. Ungrateful people cannot be happy.
所有幸福的人都心存感激, 没有感激之心的人不会幸福.
I never dreamed that he would be so ungrateful.
我做梦也没有想到他会如此忘恩负义.
Tell Mr. Whitford how ungrateful you know you have been.
告诉惠特福德先生,你已经知道了你过去是多么不成器.