Questions & Answers about Mi malfermis la bankkonton ĉe la bankejo.
Because Esperanto often makes opposites with the prefix mal-.
- fermi = to close
- malfermi = to open
So malfermis literally means something like un-closed, but in normal English we translate it as opened. This is a very common Esperanto pattern:
- bona = good → malbona = bad
- granda = big → malgranda = small
- fermi = close → malfermi = open
In this sentence, malfermi bankkonton means to open a bank account, just as in English.
-is is the Esperanto ending for the past tense.
So:
- malfermas = opens / is opening
- malfermis = opened
- malfermos = will open
Since malfermis ends in -is, the action happened in the past: I opened.