Difference between the prepositions за, от, с
Hi! Зa has two meanings "for", then in is used in the Accusative case and "behind", then it is used in the Instrumental case.
Спасибо за помощь. Thanks for your help.
Мяч за кроватью. The ball is behind the bed.
От means "from".
Я получила письмо от Алёши. I received a letter from Alex.
С can mean "with", used with the Instrumental case and also "from".
Я поеду с тобой. I will go with you.
Я пришла с улицы. I came from the street.