Look at the table. How do you say for and since in your language?
for - в течение, since - с
Do you use the present perfect with these expressions?
Используем настояще и совершенный вид глагола.
for and since
We use for to talk about a period of time.
He's been there for three days. Он пробыл там уже три дня.
We use since to talk about a point in time.
He's been there since Saturday. Он находится там с субботы.