Progressive or continuous tenses tell you what is/was or is going to be happening at a specific moment in time.

We require 2 separate verbs to form this style of tense.
• The first is referred to as the auxiliary verb.

For progressive/continuous tenses this verb will be “estar”. How you conjugate estar will determine the time frame to which you are referring.
E.g. present tense of estar = present progressive or continuous tense.

• The second verb will be a gerund. This is the “-ing” ending form of the verb in English.
For regular -AR verbs you remove the -AR and add “-ando”.
For regular -ER and -IR verbs you remove the -ER and -IR and add “iendo”.

For irregular verbs: Verbs ending in -er and -ir with a vowel before the ending, i.e. -aer, -uir, -eer, oir. We exchange the ‘i’ in -iendo for a ‘y’. E.g. creer = creyendo.
The verb “ir” meaning ‘to go’ is completely irregular and becomes ‘yendo’.

For stem changing verbs (in the present tense) that follow an e > i or e > ie stem change, swap the ‘e’ for an ‘i’ and add the regular gerund ending. E.g. preferir = prefiriendo.
For stem changing verbs (in the present tense) that follow an o > ue stem change, swap the ‘o’ for a ‘u’ and add the regular gerund ending. E.g. dormir = durmiendo.

For -IR verbs that have a vowel change ‘e > i’ and that have an -e immediately before the -ir lose the -e from the stem. E.g. reir = riendo.

We will focus on the present progressive or continuous tense:

Present tense of ESTAR Gerund examples of regular verbs
Estoy Bailando (bailar infinitive)
Estás Cantando (cantar infinitive)
Está Comiendo (comer infinitive)
Estamos Bebiendo (beber infinitive)
Estáis Escribiendo (escribir infinitive)
Están Viajando (viajar infinitive)