Questions & Answers about Mein Regenschirm ist gelb.
Why is mein used instead of meine before Regenschirm?
The possessive pronoun mein follows the same declension pattern as the indefinite article ein. Since Regenschirm is masculine (der Regenschirm) and in the nominative case here, mein takes no ending. You would use meine for feminine nouns (e.g. meine Tasche) or for plural nouns (e.g. meine Regenschirme).
Why is Regenschirm written as one word?
German often forms compound nouns by simply concatenating words without spaces. Here Regen (rain) + Schirm (umbrella) combine into one noun: Regenschirm.
Why is the R in Regenschirm capitalized?
In German, all nouns are capitalized regardless of where they appear in the sentence. That’s why you always see Regenschirm with a capital R.
Why is the adjective gelb not ending in -e, -er, or another ending?
Because gelb is used predicatively after the linking verb sein. Predicate adjectives in German remain undeclined (no endings). Compare that with an attributive adjective before a noun, which would take an ending: ein gelber Regenschirm (a yellow umbrella).