Present Simple
1. a present habit or routine
     She smokes a lot. (She always smokes a lot.)
2. a general truth
       Water is wet.
3. a present situation (not temporary)
       He lives in Dendermonde.
4. always with STATE VERBS:
   a. verbs of the senses
      Do you hear anything?
   b. verbs of opinion and understanding
      He doesn't understand Japanese.
   c. verbs of emotions and feelings
      She hates classical music.
5. in the first conditional
       He will come to the party, if you invite him.

Present Continuous or Progressive
1. a present and temporary activity
     She is smoking a lot.  (She doesn’t normally.)
2. an on-going activity of limited duration
     He is watching television at the moment.
3. a future arrangement
     He is seeing his dentist tomorrow.  (an appointment)
4. repeated actions that irritate the speaker
     He is always telling other people what to do.