Vormen van "to be" (ontkennend)
| Lange vormen | korte vormen | korte vormen |
| I am not | I'm not | |
| you are not | you're not | you aren't |
| he is not / she is not / it is not | he's not / she's not / it's not | he isn't / she isn't / it isn't |
| we are not | we're not | we aren't |
| you are not | you're not | you aren't |
| they are not | they're not | they aren't |
Heb je bovenstaande uitleg begrepen ga dan naar de oefeningen hieronder. De basisstof oefeningen heb ik zelf gemaakt. De verrijkingsstof oefeningen zijn gemaakt door andere mensen in het buitenland, vooral in Canada.
| Basisstof | Verrijkingsstof |
| oefening 1 | oefening 1 |
| oefening 2 | oefening 2 |