Usages of de
Eu vou de autocarro.
I go by bus.
Eu vou de comboio para a cidade.
I go by train to the city.
De vez em quando, eu viajo de autocarro.
Occasionally, I travel by bus.
Eu vou de avião amanhã.
I will go by plane tomorrow.
Nós vamos ao Porto de comboio.
We are going to Porto by train.
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