In this article, we’ll cover the first group: -AR Verbs!
Common regular verbs ending in -AR include falarto speak, pensarto think and amarto love
When the conjugation is regular, the endings of conjugated -AR verbs follow the same pattern. Below, we’ll use the Portuguese regular verb falarto speak in the present tense as an example:
Notice that the verb stem (the beginning of the verb to which you add the respective ending) ends right before the last vowel of the verb in its infinitive form. So, the stem of viajar is viaj-, the stem of estudar is estud-, and the stem of anunciar would be anunci-.
Regardless of which tense you are using, if you’re conjugating a regular Portuguese verb, you will always take the same verb stem and add on the appropriate ending.
The first person singular of every single regular verb in Portuguese always ends with just an o, so that’s the easiest one to memorize. You’ll confirm this as you read about the -ER and -IR verb groups as well.