Where to use present continuous?

1. Thins that are happening at the moment of speaking
• I'm working at the moment
• He's having dinner with his family now.
• Sara is sleeping
• They are no watching televisión
2. Temporary situations and habits (even if the actions isn't happening right now)
•  I'm reading a really great book
• These days, people are writing emails a lot less than they used to a few years ago
• She's staying with her frien for a week
• I am studing to become a doctor
3. Repeated actions wich are annoying (always, forever, constantly) Annoying & Shocking habits
• You're forever losing your keys!
• She's constantly missing the train
• Lucy's always smilling
• She is always coming to class late
• He is constantly talking. I wish he would shut up
• I do't like them because  they are always complaining
4. Definite future arrangements and plans
• I'm meeting my father tomorrow
• We're going to the beach at the weekend
• I'm leaving at three
• I', meeting my mother at the airport tomorrow
• Our grandmother is visiting us at Crhistmas
• My mother's going to the dentist tomorrow