Li insistis ĝin fari malgraŭ la danĝero = He would do it in spite of the danger.
Vi ne devas fari tion = You are not obliged to do that.
Here devus is used instead of the more peremptory form, devas; Vi devas ne fari tion would mean You must not (are not to) do that (see par.
Mi povis fari tion, kion vi volis = I was (have been) able to do what you wished.
Mi povos tion fari morgaŭ = I shall be able to (I can) do that to-morrow.
La elekto tion fari restas ĉe vi = The option of doing that rests with you.
Respondis la diablo, "Mi ne The devil made answer, "I povas ion fari por vi, mizerulo!
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "fari" in a variety of sentences. We hope that you will now be able to make sentences using this word.