1
show ingratitude toward sb
表示“对某人忘恩负义”时，用 toward 或 towards 引出对象。
He showed ingratitude toward his mentor.
他对导师表现出忘恩负义。
忘恩负义
先理解核心含义，再看它在真实句子里的用法。
忘恩负义
a lack of gratitude
He showed ingratitude toward his mentor.
他对导师表现出忘恩负义。
缺乏或不感激；忘恩负义。
A lack or absence of gratitude; thanklessness.
After everything I did for him, his ingratitude really hurt me.
我为他做了那么多，他的忘恩负义真的让我伤心。
She couldn't believe the ingratitude of the guests who left without saying thank you.
她不敢相信那些不道谢就离开的客人的忘恩负义。
His ingratitude towards his parents was shocking to everyone.
他对父母的忘恩负义让所有人震惊。
表示“对某人忘恩负义”时，用 toward 或 towards 引出对象。
He showed ingratitude toward his mentor.
他对导师表现出忘恩负义。
常用 an act of ingratitude 指某一具体的忘恩负义行为。
Refusing to thank them was an act of ingratitude.
拒绝感谢他们是一种忘恩负义的行为。
accuse sb of 后直接接 ingratitude，表示“指责某人忘恩负义”。
After he ignored her help, she accused him of ingratitude.
在他忽视她的帮助之后，她指责他忘恩负义。
用 for 引出所辜负的恩惠或帮助。
His ingratitude for the scholarship surprised everyone.
他对这项奖学金忘恩负义，令所有人惊讶。
Not this
He was ingratitude to his teacher for her help.
Use this
He was ungrateful to his teacher for her help.
ingratitude 是名词，不能作表语形容词；表示“忘恩负义的”应使用形容词 ungrateful。将名词换成形容词即可，其余部分保持不变。
Not this
She showed ingratitude for her parents.
Use this
She showed ingratitude toward her parents.
表达“对某人忘恩负义”时，介词要用 toward/to 来引出对象；for 通常引出原因或利益，接人会产生“为了父母”的歧义。把 for 改成 toward 后意思准确。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
表现出忘恩负义
It would be wrong to show ingratitude to those who helped you.
对那些帮助过你的人表现出忘恩负义是不对的。
忘恩负义的行为
Refusing to thank her was seen as an act of ingratitude.
拒绝感谢她被看作是一种忘恩负义的行为。
以怨报德
He repaid their kindness with ingratitude.
他以怨报德，辜负了他们的好意。
对……的忘恩负义
Her ingratitude toward her mentors surprised everyone.
她对导师们的忘恩负义让所有人惊讶。
令人心寒的忘恩负义
After all his sacrifices, the bitter ingratitude of his children broke him.
在他做出所有牺牲之后，孩子们的令人心寒的忘恩负义让他崩溃了。
极度的忘恩负义；十足的忘恩负义
After all they had done for him, moving out without even saying goodbye was rank ingratitude.
在他们为他做了这么多之后，他搬走时连再见都不说，真是极度的忘恩负义。
以怨报德；以忘恩负义回报善意
It would be repaying kindness with ingratitude to refuse to help her now.
现在拒绝帮助她，就是恩将仇报、以怨报德。
吹吧，吹吧，冬天的风，你的无情尚不及人类的忘恩负义。
From Shakespeare's comedy 'As You Like It' (Act II, Scene VII), this song contrasts the bitter winter wind with the even crueler ingratitude of people.
出自莎士比亚喜剧《皆大欢喜》（第二幕第七场），歌中将凛冽的冬风与人类更冷酷的忘恩负义作对比。
忘恩负义，你这铁石心肠的恶魔，当你在孩子身上现形时，比海怪还要可怖！
From Shakespeare's tragedy 'King Lear' (Act I, Scene IV), Lear cries this in fury at his daughter Goneril's thanklessness, calling ingratitude worse than a sea-monster.
出自莎士比亚悲剧《李尔王》（第一幕第四场），李尔王因女儿高纳里尔的忘恩负义而愤怒地喊出这句话，称忘恩负义比海怪更可怕。
Use ingratitude naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
ingratitude拆成in(不)+gratitude(感激)，不懂感激就是忘恩负义。
语域：formal 常见场景：formal writing、literature、public speeches ingratitude 比较正式，多用于书面语或较正式的表达；日常口语中通常更常说 lack of gratitude 或 ungratefulness。
gratitude、latitude、attitude 与 ingratitude 的读音有相同的 /ætɪtjuːd/ 尾部，是真正的押韵词；altitude、multitude、longitude 虽然拼写也以 -itude 结尾，但重读音节或元音/辅音不同，并不押韵。
Dictionary facts from ECDICT, WIKTIONARY.