English makes few changes to its word endings ('suffixes'). In the Italic or 'Romance' languages (such as French, Italian, and Spanish), word endings carry a lot of meaning. In English we have just a few: plurals and possessives ("John's") are the most common. In our verbs we have dropped most endings except one: I love, you love, but "she loves". That final 's' comes from the Anglo-Saxon, which had more suffixes. Verbs do have endings which show changes in tense: walked, walking.