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54 PRESENT ACTIVE INDICATIVE LESSON XIX THE FOUR REGULAR CONJUGATIONS • PRESENT ACTIVE INDICATIVE OF AMŌ AND MONEŌ 126. There are four conjugations of the regular verbs. These conjugations are distinguished from each other by the final vowel of the present conjugation-stem. This vowel is called the distinguishing vowel, and is best seen in the present infinitive.

Below is given the present infinitive of a verb of each conjugation, the present stem, and the distinguishing vowel.


 * a. Note that the present stem of each conjugation is found by dropping -re, the ending of the present infinitive.


 * . The present infinitive of sum is esse, and es- is the present stem.

127. From the present stem are formed the present, imperfect, and future tenses. 128. The inflection of the Present Active Indicative of the first and of the second conjugation is as follows: