Before a singular, masculine noun "primero" and "tercero" change to primer and tercer.
The present progressive is a form of estar in the present tense and a present participle.
The regular present participle ending for -ar verbs is ando, and for -er/-ir verbs is iendo. These endings mean -ing in English.
Some verbs require a yendo ending so that there are not 3 vowels in a row. Some of these verbs are caer, oír, traer, creer, leer
-Ir verbs that change e-ie and e-i in the present tense change e-i in the present participle, and -ir verbs that change o-ue in the present tense change o-u in the present participle. The following verbs also stem-change in the present participle: diciendo, viniendo, pudiendo.
Ordinal Number Practice:
décimo, primer, sexta, octavo, segunda, tercer, cuarto, séptimo, primera, novena
Present Progressive Practice:
Estoy envolviendo, está patinando, están construyendo, estás corriendo, estamos comiendo, está leyendo, estás caminando/andando, está muriendo
Preterite/Imperfect Practice:
visité, íbamos, hizo, se casaron, compitió, llegué, almorzaba, fuí, practicaban, tuviste
Ordinal Numbers:
décimo, primer,
