once bitten and twice shy用法

(saying) once bitten and twice shy
諺語、格言或警句(saying)指眾所周知的固定說法或傳統說法，用作評論、
建議等，如 : actions speak louder than word(事實勝於雄辯) 和
It's all Greek to me( 我一竅不通)。

once bitten and twice shy用法:

ex: Elle was once bitten twice shy since her last relationship.
Elle 經過上次的感情事件後 就 成了一朝被蛇咬，十年怕草繩。
（指她的心態）
see: http://www.urbandictionary.com/define.php?term=once+bitten+twice+shy

Idiom Definitions for 'Once bitten, twice shy:
http://www.usingenglish.com/reference/idioms/once+bitten,+twice+shy.html

2011-03-11 08:43:39 補充：
Dark Helmet說得對也，我之前還沒注意到，後來我找到相關的句子
是用 has been 而不是 was


(He who has been bitten by a snake before fears a worm).
參閱: http://www.modernghana.com/news/213847/1/once-bitten-twice-shy.html
在文章第三段

英文諺語一朝被蛇咬，十年怕草繩的另一種說法:

A burnt child dreads the fire.

可否在 UrbanDictionary網站上詢問：

elle was once bitten twice shy since her last relationship.

因為 since = until now 這個 condition 至今任然存在

has been 會不會比 was 適合？