The passive: …-tzen da and …-tua izan da

When the deed matters more than the doer, Basque puts the object in front and changes the auxiliary verb to da/dira: Etxe berriak saltzen dira hemen — new houses are sold here, literally "new houses selling-being are". The -tzen form is the process: they are being done now or in general. For example: “Etxe berriak saltzen dira hemen” — New houses are sold here. A rule from the Basque course: worked out on examples…

Updated September 1, 2026 · Lingofly

How it works

When the deed matters more than the doer, Basque puts the object in front and changes the auxiliary verb to da/dira: Etxe berriak saltzen dira hemen — new houses are sold here, literally "new houses selling-being are". The -tzen form is the process: they are being done now or in general.

If the deed is already done, the perfect comes: participle + -tua izan da. Liburua euskarara itzulia izan da — the book has been translated into Basque. The doer can be named by the -k form at the participle: Jon-ek idatzia — written by Jon.

Table

The passive: …-tzen da and …-tua izan da
the meaningthe formthe example
is being done (process)…-tzen da/dirasaltzen dira
has been done (result)…-tua izan daitzulia izan da
by whom donedoer + -k + -iaJon-ek idatzia

By example

  • Etxe berriak saltzen dira hemen
    New houses are sold here
  • Liburua euskarara itzulia izan da
    The book has been translated into Basque
  • Zaborra birziklatzen da herri guztietan
    Trash is recycled in all the villages

How the rule settles in your head

A rule is not memorized from an explanation. It is memorized from an attempt to use it and a mistake — that is why the app delivers it mixed in with words, not as a separate lesson: it resurfaces exactly where you forgot it.

Frequently asked

The passive: how does it work in Basque?

When the deed matters more than the doer, Basque puts the object in front and changes the auxiliary verb to da/dira: Etxe berriak saltzen dira hemen — new houses are sold here, literally "new houses selling-being are". The -tzen form is the process: they are being done now or in general.

What does it look like in an example sentence Basque?

“Etxe berriak saltzen dira hemen” — New houses are sold here. A rule is easier to test on sentences like this than to memorize as a wording: what surfaces in conversation is the sentence.

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Test the rule on examplesPractice