once i reach there.. i'll call u..
once u finish this .. bring it back
..
well once here mean ... if
yes exactly and also like
بمجرد أن فعلت كذا ..... حدث كذا ^^
once she found out that .... she got shocked
Is it right ???

Thanks to Maxman
and the Assassin

جزاكم الله خير ويسر أموركم يا رب ^^

but you have not answered this

is it right to say
twice a week
i mean shall i put a after twice like in once