We cannot say La afero kies ni parolis for "The affair of which we spoke"; we must say La afero, pri kiu ni parolis.
Any other idea or hope which this aŭ alia Esperantisto ligas kun la or that Esperantist associates Esperantismo estos lia afero pure with Esperanto will be his purely privata, por kiu la Esperantismo personal business, for which ne respondas.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "afero" in a variety of sentences. We hope that you will now be able to make sentences using this word.
