It is discreditable to do sth
用 it 作形式主语,真正的主语是后面的不定式,语气偏正式。
It is discreditable to break a promise you have made.
违背自己许下的承诺是不光彩的。
有损名誉的；丢脸的；不光彩的
可被质疑的；可失去信誉的；可遭诋毁的。；低劣的,卑鄙的,带来耻辱的。；有损信用的；不名誉的
bringing discredit; shameful or disgraceful
可遭诋毁的。
Able to be discredited.
低劣的,卑鄙的,带来耻辱的。
Low, mean, bringing discredit.
The politician's discreditable behavior caused him to lose the election.
那位政客可耻的行为导致他输掉了选举。
用法提示：形容词discreditable修饰behavior，表示行为有损名誉。
Spreading false rumors about a colleague is a discreditable act.
散布关于同事的虚假谣言是一种可耻的行为。
用法提示：形容词discreditable修饰act，指出这种行为应受谴责。
She felt that accepting the money under such conditions would be discreditable.
她觉得在这种情况下接受那笔钱会是不光彩的。
用法提示：形容词discreditable作表语，描述接受钱财的行为可耻。
用 it 作形式主语,真正的主语是后面的不定式,语气偏正式。
It is discreditable to break a promise you have made.
违背自己许下的承诺是不光彩的。
介词 to 引出因此蒙受耻辱的人或集体。
His conduct was discreditable to the whole school.
他的行为让整个学校蒙羞。
作定语直接修饰名词,多见于书面语。
The company tried to hide its discreditable record.
公司试图掩盖自己不光彩的记录。
用于 find + 宾语 + discreditable 结构,表示主观评价。
Many voters find the cover-up discreditable.
许多选民认为这起掩盖行为很不光彩。
grammar · medium
易错句子The scandal left the minister discreditable.
正确表达The scandal left the minister discredited.
discreditable 是 -able 结尾的形容词，意思是“带来耻辱的、有损名誉的”，用来形容行为或事情本身；形容人“名誉受损、信誉扫地”要用过去分词 discredited。原句说的是部长本人的名声被丑闻毁了，所以用 discredited。
grammar · medium
易错句子He brought discreditable to his family.
正确表达He brought discredit to his family.
discreditable 只能作形容词，不能像汉语的“耻辱、丢脸”那样直接当名词作宾语；bring 后面需要名词，此处应用名词 discredit（耻辱、丢脸）。
disreputable 形容人或场所长期名声差、不体面；discreditable 侧重某个行为本身丢脸、有损名誉，不一定指长期名声。
discredited 指因证据而被驳倒、不再可信，多用于说法、理论或人物；discreditable 指该事物使人丢脸、有损名誉。
creditable 与 discreditable 形式相近但意思相反：前者表示做得好、值得称赞，后者表示丢脸、有损名誉。
dis- + credit (v.)
dis- + credit + -ably (adv.)
credit + -able (adj.)
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