The nominative case is used to indicate the subject of a sentence - the person or thing that is doing the action in a sentence. The nominative case is always used with the verbs 'sein' (to be) and 'werden' (to become).
For example:
| Die Katze schläft. | The cat is sleeping. |
| Unsere Lehrerin ist sehr nett. | Our teacher is very nice. |
| Ich esse gern Birnen. | I like eating pears. |
| Wir wollen Fußball spielen. | We want to play football. |
| Das ist ein schöner Pullover. | That is a nice pullover. |
| Das ist ein schönes Auto. | That’s a nice car. |