coloredglaze
discourteousness;misbehavior;in bad taste最常用：impolite 英[ˌɪmpəˈlaɪt] 美[ˌɪmpəˈlaɪt] adj. 不礼貌的，失礼的，粗鲁的;不客气;悖礼;非礼 [例句]Eg. he gave a black look at the impolite waiter in the restaurant.他对不礼貌的餐厅服务员狠狠地看了一眼。 希望采纳
candy晓琳
It's impolite to speak ill of others.
to say bad words about.表示做某事是怎样的,结合It is not polite用it's+adj+to do sth,说别人坏话say bad words about others,所以说别人的坏话是不礼貌的英文是It's impolite to speak ill of others.
It's + adj. + to do sth.意为“做某事是...的”。It 为形式主语,放在句首;动词不定式为真正的主语,放在句末。例如：It is interesting to play pingpong.（打乒乓球很有意思。）
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