The simple present tense is used to discuss permanant situations, and the frequency of events.

To have Short form Other Verbs (to work)
I have I've I work
he has he's He works
she has she's She works
it has it's It works
you have you've you work
we have we've we work
they have they've they work
Statements
+
Statements
-
Questions Short answer
+
Short answer
-
I work. I don't work. Do I work? Yes, I do. No, I don't.
He works. He doesn't work. Does he work? Yes, he does. No, he doesn't.
She works. She doesn't work. Does she work? Yes, she does. No, she doesn't.
It works. It doesn't work. Does it work? Yes, it does. No, it doesn't.
You work. You don't work. Do you work? Yes you do. No, you don't.
We work. We don't work. Do we work? Yes we do. No, we don't.
They work. They don't work. Do they work? Yes they do. No, they don't.

Regular or permanent situations

When something happens regularly or is a permanent situation we usually use the simple present tense. When using the simple present the verb (with the exception of the auxiliary verbs) remains in the dictionary form (verb + s with he/she/it).

Simple Present Timeline

Simple present tense timeline

For example:

Q) "Where do you live?" A) "I live in Germany."

Q) "Where does he live?" A) "He lives in Germany."

Q) "What do you do?" A) "I'm a teacher."

Q) "What does he do?" A) "He's a teacher."

Frequency

The simple present tense is also used to show how often something happens with adverbs of frequency - always, usually, often, sometimes, occasionally, seldom, rarely, never, etc.... And when discussing daily, weekly, monthly etc. routines.

For example:

"I always get up at 6.00."

"I never drink coffee before 12.00."

"I work on my website every day."

"Every Monday and Thursday I go to the gym."

We also use the simple present to ask for and give instructions or to discuss a series of actions.

For example:

Q) How do I make pancakes?" A) Well, first you take 4 eggs and crack them into a bowl, then you weigh out 4 oz. of flour and sieve it into the eggs. etc.

The simple present tense can also be used to discuss future events.