Narrative sentences
1. We have been learning English for a few years already.
2. Nick has been sleeping for twelve hours.
3. Mum has been cooking dinner for an hour already.
Negative Sentences
1. They haven't been working since February.
2. She hasn't been watching TV much recently.
3. I haven't been following any blogs since last summer.
Questions
1. Have you been listening to me?
2. How long has your brother been waiting for his friends?
3. Has your sister been talking on the phone for half an hour?
