may not ⇒ 她不一定会回电话。 Tā bùyīdìng huì huí diànhuà. → She may not return your call.
一丝不苟
be meticulous ⇒ 她对教学工作一丝不苟。 Tā duì jiàoxué gōngzuò yī sī bù gǒu. → She's meticulous in her teaching work.
一成不变
immutable
一文不名
be penniless
一毛不拔
be very stingy ⇒ 有些人腰缠万贯，对他人却一毛不拔。 Yǒuxiē rén yāo chán wàn guàn, duì tārén què yī máo bù bá. → Some people have bags of money, but they're very stingy with other people.
一窍不通
not know the first thing about
一蹶不振
be unable to recover after a setback
不可一世
be insufferably arrogant
不拘一格
not be limited to one type ⇒ 选用人才要不拘一格。 Xuǎnyòng réncái yào bùjū yī gé. → When selecting staff you mustn't be limited to just one type.
说一不二
be a man of one's word ⇒ 我们的女老板说一不二。 Wǒmen de nǚ lǎobǎn shuō yī bù èr. → Our boss is a woman of her word.
百闻不如一见
seeing is believing
一不做，二不休
go the whole hog
English translation of '一 ... 不 ... '
一 ... 不 ...
(yī ... bù ... )
副
(用于两动词之间)
⇒ 他离家出走后一去不返。 (Tā líjiā chūzǒu hòu yī qù bù fǎn.) He left home, never to return.
(用于一名一动之间)
⇒ 大厅明亮宽敞，一尘不染。 (Dàtīng míngliàng kuānchǎng, yī chén bù rǎn.) The great hall was bright and spacious — and spotless.