The words characterizing the present indicative tense are do, does, am, are, and is.
In Spanish, verbs are conjugated to show mood, tense, person, and number. Most verb conjugations follow a regular pattern. Verbs that do not follow the patterns are irregular and you must memorize them. Even these irregular verbs are not irregular in all tenses.
Verbs in Spanish are easily identified because they end in either ar, er, or ir.
All conjugations and tenses are formed using the stem of the infinitive, that is, the part BEFORE the ar, er, or ir him. Those with an er ending are second conjugation verbs.
To form the present indicative terms, dropping the infinitive ending (ar, er or ir) to get the stem, or radical. Then attach the proper endings are shown below for the first, second, and third conjugation verbs.