Verbs in infinite form in spanish always end in -ar, -er, or -ir. In your example: bailar (to dance), escribir (to write), and correr (to run).
To talk about activities or events that have just happened, what phrase do we use in Spanish?
In spanish we say "acabo de" to explain something that just happened, like "I have just..."
The conjugation is:
Ella acaba
Nosotros acabamos
Yo acabo
Él acaba
Tú acabas
