副詞 never:

1. not ever; at no time in the past or future
   同義詞：ne'er
2. not at all; certainly not; not in any circumstances

1. We never flinch from difficulties.
   在困難面前我們決不退縮。
2. I will never forget your kindness.
   我永遠(yuǎn)忘不了你的好意。

nev.er

adv.（副詞）
Not ever; on no occasion; at no time:
從未：從未；不在任何場(chǎng)合；未曾：
例句：
He had never been there before. You never can be sure.
他以前從未到過(guò)那里。你永遠(yuǎn)不能確定

Not at all; in no way; absolutely not:
根本不；決不；絕對(duì)不：
例句：
Never fear. That will never do.
絕不要怕。那絕對(duì)不會(huì)發(fā)生

來(lái)源：
Middle English
中古英語(yǔ)
from Old English nôfre
源自 古英語(yǔ) nôfre
ne [not] * see ne
ne [不] *參見(jiàn) ne
ôfre [ever] * see aiw-
ôfre [曾] *參見(jiàn) aiw-