1. You would literally say, 'I'm about to drink a coffee.' or 'I'm going to drink coffee.'
2. Your daughter, 'rips it off the branch.'
3. She, 'throw some dough.'
4. You would say, 'Don't throw it on the floor.'
For 2, 3 and 4 you are using present tense. However for speaking in the third person i.e. she/he/it you need to add an -s.
So instead of, 'I throw the dough' it becomes, 'She throws the dough.'
Hope that helps :)