Breakdown of Caso o alarme soe, tens de sair do prédio.
do
of the / from the (do, da, dos, das)
o prédio
the building
sair
to go out
ter de
to have to
caso
in case
o alarme
the alarm
soar
to sound
Elon.io is an online learning platform
We have an entire course teaching Portuguese (Portugal) grammar and vocabulary.