Questions & Answers about Maturinn er íslenskur.
• íslenskur matur = “Icelandic food” (indefinite noun; strong adjective)
• íslenski maturinn = “the Icelandic food” (definite noun; weak adjective)
When an adjective modifies a definite noun directly (attributively), it takes the weak form (íslenski).
Invert verb and subject, just like in English questions:
Er maturinn íslenskur?
Place ekki (“not”) right after the verb:
Maturinn er ekki íslenskur.
Use the noun in its indefinite form (no article):
Matur er íslenskur.
This is grammatical, though speakers often rephrase or use the plural to sound more natural.
• Maturarnir = “the foods” (definite plural of matur)
• eru = “are” (3rd-person plural of vera)
• íslenskir = strong masculine nominative plural of íslenskur
Put together: Maturarnir eru íslenskir.
Strong nominative singular:
• Masculine: íslenskur
• Feminine: íslensk
• Neuter: íslenskt
Strong nominative plural:
• Masculine: íslenskir
• Feminine: íslenskar
• Neuter: íslensk