Conjugating -IR Verbs in the Present Tense

If you are familiar with how to conjugate -er verbs, then conjugating -ir verbs is a snap. The only difference between them is the nosotros and vosotros forms. Let's compare the two below:

aprender	to learn
yo aprendo	nosotros aprendemos
tú aprendes	vosotros aprendéis
él, ella, Ud. aprende	ellos, ellas, Uds. aprenden

vivir	to live
yo vivo	nosotros vivimos
tú vives	vosotros vivís
él, ella, Ud. vive	ellos, ellas, Uds. viven

Notice that the nosotros and vosotros forms change slightly, which is unique to the -ir verbs. Keep in mind that this change is only for regular verbs. Some stem changing irregular -ir verbs are below, along with their stem changes:

pedir(e--->i)	to ask for
yo pido	nosotros pedimos
tú pides	vosotros pedís
él, ella, Ud. pide	ellos, ellas, Uds. piden

adquirir(i--->ie)	to acquire
yo adquiero	nosotros adquirimos
tú adquieres	vosotros adquirís
él, ella, Ud. adquiere	ellos, ellas, Uds. adquieren