How to translate "since" in Farsi

I haven't seen him since last week.
من از مقته پيش او را نديده ام
/man az hafteh ye pish u: ra: nadideh am/
Orders: subject+time+object+place+verb

I = subject
Haven't seen = verb
Him = object
Since = از/az/
Last week = time

Since last week
از مقته پيش /az hafteh ye pish/

Since + year = از سال /az sa:l-e-.../
Since 1990 = از سال 1990/az sa:l-e- heza:r-o- noh sad-o- navad/