Translation of 曾 in English

Chinese simplified

曾

Traditional Chinese

曾

Meaning of 曾

知道此事曾发生过

zhīdào cǐshì zēng fāshēng guò

to know this ever happened

我们曾见过他

wǒmen zēngjiàn guò tā

we saw him once

我曾告诉过你吗?

wǒ zēng gàosù guò nǐ ma ?

did I ever tell you?

曾参加全国性比赛

zēng cānjiā quánguóxìng bǐsài

once took part in the national competition