Questions & Answers about Das Auto ist blau.
Why doesn't the adjective blau have an ending (like blaues) to match the neuter noun das Auto?
Because blau comes after the verb ist. In German, adjectives only get matching endings when they are placed directly in front of a noun (as in das blaue Auto). When they describe a noun but come after the verb, they always stay in their basic, unchanged form.
Is there a trick to remember why it is das Auto instead of der or die Auto?
Auto is a neuter noun (das). A handy rule is that many foreign words or technical terms ending in the letter -o are neuter in German. Other common examples include das Kino (cinema), das Foto (photo), and das Radio.
How does this sentence change if I want to say "The cars are blue"?
It becomes Die Autos sind blau. To make Auto plural, you just add an -s, which is the standard rule for German nouns ending in a vowel like -o. Notice that the adjective blau still doesn't get any ending!
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