| Auxiliary | Subject | Verb | Rest | Yes/No | Subject | Auxiliary (+ n't) |
|---|---|---|---|---|---|---|
| Do | you | read | books? | Yes, | I | do. |
| No, | I | don't. | ||||
| Does | Peter | play | football? | Yes, | he | does. |
http://www.englisch-hilfen.de/en/exercises/questions/simple_present.htm
http://www.englisch-hilfen.de/en/exercises/questions/simple_present2.htm