Alex is a bus driver, but now he is in bed asleep.
He is not driving a bus. (He is asleep)
but He drives a bus. (He is a bus driver)
Drive(s) / work(s) / do(es), etc, is the simple present:
We use the simple present to talk about things in general. We use it to say that something happens all the time or repeatedly, or that something is true in general:
Nurses take care of patients in hospital.
I usually leave for work at 8 a.m.
The earth goes around the sun.
The coffee shop opens at 7:30 in the morning.
We use do / does to make questions and negative sentences:
I come from Japan. Where do you come from?
I don’t go to church very often.
What does this word mean? (not What means this word?)
Rice doesn’t grow in cold climates.
In the following examples, do is also the main verb (do you do / doesn’t do, etc.):
“What do you do?” “I work in a department store.”
He’s always so lazy. He doesn’t do anything to help.
We use the simple present to say how often we do things:
I get up at 8:00 every morning.
How often do you go to the dentist?
Julie doesn’t drink tea very often.
Robert usually plays tennis two or three times a week in the summer.
I promise / I apologize, etc.
Sometimes we do things by saying them. For example, when you promise to do something.
you can say “I promise…” ; when you suggest something, you can say, “I suggest …”:
I promise I won’t be late. (not I’m promising)
“What do you suggest I do?” “I suggest that you spend less money.”
In the same way, we say: I advice… / I insist … / I refuse … / I suppose …. / etc.