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"En" is a form of "en", a preposition which is often translated as "in". "Por la calle" is a phrase which is often translated as "down the street". Learn more about the difference between "por la calle" and "en" below.
por la calle(
pohr
lah
kah
-
yeh
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. down the street
El hombre iba caminando por la calle y casi lo atropellan.The man was walking down the street and almost gets run over.
b. through the street
La gente disfrazaba desfilaba por la calle.The people wearing costumes paraded through the street.
en(
ehn
)A preposition is a word that indicates the relationship between a noun and another word (e.g., He ran through the door.).