How to Say "constructing" in Spanish
The Spanish word for “constructing” is “construyendo” — A2 level. This is a very common word in everyday Spanish.

Examples
Están construyendo un nuevo puente sobre el río.
They are building a new bridge over the river.
Mi padre ha estado construyendo una casa en el campo durante años.
My father has been constructing a house in the countryside for years.
Si seguimos construyendo con ladrillos, terminaremos pronto.
If we keep building with bricks, we will finish soon.
The Gerund's Main Job
The word 'construyendo' is the '-ing' form in Spanish. Its main use is to show an action happening right now, usually by pairing it with a form of the verb 'estar' (to be). Example: 'Estamos construyendo' (We are building).
The 'Y' Spelling Rule
The base verb 'construir' has an 'i' right before the '-endo' ending. When this happens, Spanish often changes the 'i' to a 'y' to make the sound flow better: 'construiendo' becomes 'construyendo'.
Dropping the 'Y'
Mistake: “Estamos construiendo.”
Correction: Estamos construyendo. The 'y' is essential here because the vowel sound is strong.
Related Translations
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