Des is a Biache.     →       Des is as Biache. (This is a book. → This is the book.)

Des is a Baam.        →
Des is a Computer.        →
Des is a Freind.         →
Des is a Bier.        →
Des is a Buitl.        →
Des is a Dia und a Fenster. →
Des is a Disch.        →
Des is ned a Brezn.      →
Des is ned a Captain. →
Des is a Katz.        →

Form sentences. Use once the indefinite form and then the definite form.

Dia, groaß → Des is a groaße Dia. (This is a big door.) → Des is de groaße Dia. (This is the big door.)

Biache, schee →
Baam, groaß →
Brezn, kloa →
Katz, schee →
Raumschiff, groaß →
Freind, schee →
Land, groaß →
Buitl, kloa →
Erdn, schee →
Fenster, groaß →

Make questions out of these sentences:

Des is a Freind. →
Da Freind kimmt umma. →
Des Buitl is schee. →
Des kenn i ned. →
Mia beamma Scotty umme. →
I woaß des. →
Du bist schee. →
Mia kemma ned. →