German Case and Adjective Endings: STRONG ENDINGS & WEAK ENDINGS
m f n pl
NOMINATIVR -eE -eS -eE -en
no articleschwarzer Teeweiße Milchdunkles Brotleckere Bananen
indefinite articleein guter Manneine gute Frauein gutes Kindkeine guten Leute
definite articleder gute Manndie gute Fraudas gute Kinddie guten Leute
pronounswer? / ersieessie
AKKUSATIVN -enE -eS -eE -en
no articleschwarzen Teeweiße Milchdunkles Brotleckere Bananen
indefinite articleeinen guten Manneine gute Frauein gutes Kindkeine guten Leute
definite articleden guten Manndie gute Fraudas gute Kinddie guten Leute
pronounswen? / ihnsieessie
DATIVM -enR -enM -enN -en (+ -n)
no articleschwarzem Teeweißer Milchdunklem Brotleckeren Bananen
indefinite articleeinem guten Manneiner guten Fraueinem guten Kindkeinen guten Leuten
definite articledem guten Mannder guten Fraudem guten Kindden guten Leuten
pronounswem? / ihmihrihmihnen
GENITIVS -en (+ -(e)s)R -enS -en (+ -(e)s)R -en
no articleschwarzen Teesweißer Milchdunklen Brotesleckerer Bananen
indefinite articleeines guten Manneseiner guten Fraueines guten Kindeskeiner guten Leute
definite articledes guten Mannesder guten Fraudes guten Kindesder guten Leute
RULE 1:If an article does not demonstrate the case of a noun (either through the absence of an article OR due to an ein-word with no ending), but there is an attributive adjective accompanying that noun, the adjective must take the STRONG ENDING (the ending that the definite article would take if it were there). Exceptions to RULE 1: Genitive masculine and neuter. The adjective always takes a WEAK ENDING.
RULE 2:If an article does demonstrate the case of a noun by virtue of its ending, i.e. the article takes the STRONG ENDING, then any accompanying attributive adjective will take a WEAK ENDING. Note that in some instances, the STRONG and WEAK endings are identical, however.
Definite articles (words that function like der): dies-, jed-, welch-, solch-, manch-, jen-, all-, beid
Indefinite articles (words that function like ein): ein-, kein, and the possessive adjectives: mein-, dein-, sein-, ihr-, unser-, euer/eur-, Ihr-