adj.忘恩负义的，不领情的

She was ungrateful for all the help he had given her.
她对他的所有帮助都毫无感激之情。
Despite his efforts, she remained ungrateful and dismissive.
尽管他付出了努力，但她仍然不知感恩且轻视他的付出。
The child showed an ungrateful attitude towards the kind old man who had helped him.
那个孩子对帮助他的善良老人表现出不感恩的态度。
It's disheartening to be met with ungratefulness after going out of your way to help someone.
你费尽心思去帮助别人，却遭到不知感恩的回应，这真是令人沮丧。
She felt unappreciated and ungrateful when her hard work went unnoticed by her colleagues.
当她的辛勤工作被同事们忽视时，她感到自己没有得到应有的认可和感激。
His ungrateful behavior toward his parents shocked everyone in the family.
他对父母的不知感恩的行为震惊了家里的每一个人。
Even after all I've done for her, she remains ungrateful and selfish.
尽管我为她做了那么多，她依旧不知感恩，只顾自己。
The ungrateful friend never acknowledged the gift I sent them.
那个忘恩负义的朋友从未对我送给他们的礼物表示过感谢。
After the rescue, the survivor showed no sign of being ungrateful but was deeply grateful to the rescuers.
在获救后，幸存者并未表现出任何不知感恩的迹象，而是深深地感谢救援人员。
It's frustrating to feel like your efforts are constantly met with ungratefulness.
感觉自己的努力总是换来不知感恩，这种感觉很令人沮丧。