BY

Use 'by' with the following nouns:

to pay by check (credit card)

Example: I paid the bill by check.

to do something by accident

Example: I broke the vase by mistake.

to do something by mistake

Example: I'm afraid I brought the wrong book by mistake.

to do something by chance

Example: I saw Jack at the supermarket by chance.

a play, song, book, etc. by someone

Example: The opera 'Otello' is by Giuseppe Verdi.

to go somewhere by car/ plane / subway / plane / ship / horse

Example: She went to Europe by ship

FOR

Use 'for' with the following nouns:

(to go / come) for a walk

Example: Let's go for a walk.

(to go / come) for a swim

Example: We went for a swim as soon as we arrived.

(to go / come) for a drink

Example: Would you like to come over for a drink?

(to go / come) for a visit

Example: I'd love to come for a visit sometime.

(to have something) for breakfast / lunch / dinner / supper (US English)

Example: I had bacon and eggs for breakfast.

IN

Use 'in' with the following nouns:

to be OR to fall in love with someone

Example: I fell in love with my wife at first sight.

in my opinion

Example: In my opinion, we need to invest in some development.

ON

Use 'on' with the following nouns:

(to be) on fire

Example: Help! The house is on fire!

(to be) on the telephone / phone

Example: I think Tom is on the phone at the moment.

on television

Example: There is a good film on television tonight.

on the radio

Example: Mahler's fifth was on the radio last night.

(to be / go) on a diet

Example: I really need to go on a diet.

(to be / go) on strike

Example: The sanitary engineers have gone on strike again.

(to be / go) on holiday (UK English) / vacation (American English)

Example: I really need to go on vacation soon.

(to be / go) on business

Example: He went away this weekend on business.

(to be / go) on a trip

Example: We were on a trip this past weekend.

(to be / go) on a tour

Example: Have you ever been on a tour of the French countryside?

(to be / go) on an excursion

Example: We went on an excursion to Versailles when we were in Paris.