1
be unforgivable
作表语时，主语常指行为、错误等。
His behavior was unforgivable.
他的行为是不可原谅的。
不可原谅的；不可饶恕的
先理解核心含义，再看它在真实句子里的用法。
不可原谅的；不可饶恕的
not excusable
His behavior was unforgivable.
他的行为是不可原谅的。
不可原谅的；不可饶恕的
Not forgivable; inexcusable.
Lying to your closest friend is unforgivable.
对你最亲密的朋友撒谎是不可原谅的。
He said some unforgivable things during the argument.
他在争吵中说了一些不可饶恕的话。
She considers cheating on an exam unforgivable.
她认为考试作弊是不可饶恕的。
作表语时，主语常指行为、错误等。
His behavior was unforgivable.
他的行为是不可原谅的。
作定语修饰名词，表示“不可原谅的……”。
Lying to a friend is an unforgivable sin.
对朋友撒谎是不可饶恕的罪过。
不定式是逻辑主语，it 为形式主语。
It is unforgivable to treat people that way.
那样对待别人是不可原谅的。
that 从句说明不可原谅的具体内容。
It is unforgivable that she forgot her promise.
她忘了自己的承诺，这是不可原谅的。
Not this
He made a unforgivable mistake.
Use this
He made an unforgivable mistake.
unforgivable 以元音音素 /ʌn/ 开头，所以不定冠词要用 an，不能用 a。英语冠词的选择取决于读音，而不是字母。
Not this
What he said was an unforgivable.
Use this
What he said was unforgivable.
unforgivable 是形容词，不能放在冠词 an 后面当名词用。若保留冠词，需补上名词，如 an unforgivable act；否则应去掉 an，直接用形容词作表语。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
不可饶恕的罪过
He committed an unforgivable sin by betraying his closest friend.
他背叛了最亲密的朋友，犯下了不可饶恕的罪过。
不可原谅的错误
Forgetting her birthday was an unforgivable mistake.
忘记她的生日是个不可原谅的错误。
不可原谅的过错
He was fired for an unforgivable offense.
他因不可原谅的过错被解雇了。
不可原谅的行为
His unforgivable behavior shocked everyone.
他那不可原谅的行为让大家震惊。
不可饶恕的行为
Stealing from the charity was an unforgivable act.
从慈善机构偷窃是一种不可饶恕的行为。
不可饶恕的过错；不可原谅的罪过
Forgetting your anniversary is an unforgivable sin in her book.
在她看来，忘记结婚纪念日是不可饶恕的过错。
它们合起来就是‘不可饶恕咒’。
In 'Harry Potter and the Goblet of Fire', Mad-Eye Moody demonstrates the three Unforgivable Curses to his Defence Against the Dark Arts class.
在电影《哈利·波特与火焰杯》中，疯眼汉穆迪在黑魔法防御术课上向学生们演示了这三种不可饶恕咒。
Use unforgivable naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
偷吃朋友最后一块蛋糕，说“对不起”也没用——这就是 unforgivable（不可原谅）。un 表示“不”，forgive 是“原谅”。
语域：neutral 常见场景：严肃道德评价、正式批评或新闻评论 unforgivable 属于中性用词，多用于严肃的道德批评或正式书面语，日常口语中也会用到但语气较重。常见搭配有 unforgivable sin、unforgivable act、unforgivable behavior。
Rhymes: forgivable and unlivable (stressed vowel + following sounds match). Lookalikes to watch: unforgettable, unbreakable, inexcusable, and invisible share the suffix spelling or the weak final syllable /əbəl/, but they do NOT rhyme with unforgivable because their stressed vowels differ; invisible is also spelled -ible.
Dictionary facts from ECDICT, WIKTIONARY.