in support of or in favour of (a person or policy)

troops who had fought for Napoleon

they voted for independence in a referendum

affecting, with regard to, or in respect of

she is responsible for the efficient running of their department

the demand for money

on behalf of or to the benefit of

I got a present for you

these parents aren't speaking for everyone

having (the thing mentioned) as a purpose or function

networks for the exchange of information

the necessary tools for making a picture frame

having (the thing mentioned) as a reason or cause

Aileen is proud of her family for their support

I could dance and sing for joy

having (the place mentioned) as a destination

they are leaving for London tomorrow

representing (the thing mentioned)

the ‘F’ is for Fascinating

in place of or in exchange for

will you swap these two bottles for that one?

in relation to the expected norm of

she was tall for her age

it's quite warm for this time of year

indicating the length of (a period of time)

he was jailed for 12 years

I haven't seen him for some time

indicating the extent of (a distance)

he crawled for 300 yards

indicating an occasion in a series

the camcorder failed for the third time

because; since

he felt guilty, for he knew that he bore a share of responsibility for Fanny's death