Ni devas izoli la ĉambron.

the

Breakdown of Ni devas izoli la ĉambron.

• ni: we
• devi: must
• ĉambro: the room

Questions & Answers about Ni devas izoli la ĉambron.

Why does devas end in -as?

Because -as is the Esperanto ending for the present tense.

• devi = to have to / must
• devas = have to / must
• devis = had to
• devos = will have to

So Ni devas izoli la ĉambron literally has the structure We must isolate the room.

Why does izoli end in -i instead of -as?

The ending -i marks the infinitive, the basic dictionary form of a verb: to isolate.

After devas, Esperanto normally uses an infinitive:

• Mi devas iri = I must go
• Ŝi devas labori = She must work
• Ni devas izoli la ĉambron = We must isolate the room

So devas is the conjugated verb, and izoli stays in the infinitive form.

Why is it ĉambron with -n at the end?