When do we use the preposition "for" and "from"?

Hello!!

I just need some information about some prepositions that for foreigners are a bit confusing,
In what cases do we use for and in what cases do we use from?

Hi Vanesita,

You might care to read a piece I’ve written for the site on prepositions in general. You will find it listed in the index of esl lessons and it’s headed simply Prepositions.

The main use of from is to indicate the idea of origin or out of of as in:

She is a painter from Holland (her country of origin) but she lives in America.

The main use of for is to indicate direction in the sense of indicating to a particular object as in:

I have written two examples for you (given to you alone) to show the use of these prepositions.

Alan