Present Simple Tense    (I do = S+V1)
 
1. We use the present simple to talk about things in general. We are not thinking about now. We use it to say that something happens all the time or repeatedly or that something is true in general. It is not important whether the action is happening at the time of speaking.
        - Nurse look after the patients in hospital.
        - I usually go away at the weekend.
        - The earth goes round the sun.
Remember that we say: he / she / it-s. Don't forget the s:
        - I work…..but He works…..
        - They teach……but My sister teaches……
2. We use do / does to make question and negative sentences:
 
 
 
 
 
 
        - Where do you come from?  I come from Canada.
        - Would you like a cigarette?  No, thanks. I don't smoke.
        - What does this word mean?
        - Rice doesn't grow in cold climates.
** In the following examples do is also the main verb:
        - What do you do?  I work in a shop.
        - He's so lazy. He doesn't do anything to help me (Not "He doesn't anything.")
3. We use the present simple when we say how often we do things:
        - I get up at 8 o'clock every morning. (Not "I'm getting")
        - How often do you go to the dentist? (Not "How often are you going")
        - Ann doesn't drink tea very often.
        - In summer John usually plays tennis once or twice a week.
 
Do
Does
 
I/we/you/they
He/she/it
 
work?
come?
do?
 
I/we/you/they
He/she/it
don't   
doesn't       
 
work.
come.
do.
Tense