The document discusses examples using the present perfect tense. Some key examples include: 1. Jane has been in London since Sunday. Bob has been in France for three weeks. My uncle has lived in Australia for fifteen years. 2. We have been here since early this morning. I lived in Thailand 10 years ago. We have waited for the bus for twenty minutes. 3. Jane has been ill since Monday. Pat has been in hospital since March. Liz has studied English for six months.