The auxiliary “to do” in Present + particle “not” + main form of the verb is used to form negative sentences in the Present Simple Tense.

• They do not go to the disco.
• Pete does not take drugs.
• My TV is broken and does not want to turn on.
• She does not like that sort of music.

We use the auxiliary verb “to do” in Present in addition to the main verb if we want to build a question.

• Do you like visiting museums?
• Does your little sister go to school?
• What does he do when he stays alone?
• Do they all attend seminar classes?

The Present Simple Tense is used to show how often the things are done.

• I wake up at 7 o’clock every morning.
• In Summer Jake goes to the swimming pool once or twice a week.
• How often do you drink coffee?
• What time does this mall open?
• The Olympic Games are held every 4 years.

Present Indefinite is built with the help of the first form of the main verb plus –s/–es in the third person singular.

• Jeanne sings well.
• Thomas always closes windows before leaving.
• I play tennis every Saturday.
• We work at a factory.
• They like it when it rains.

The Present Simple Tense may express an undeniable fact, the truth, which doesn’t depend on time.

• The earth goes round the sun.
• Water boils at 100 degrees Celsius.
• The sun rises at the East.
• In any right triangle, the sum of the squares of the legs equals the square of the hypotenuse.

The Present Simple Tense is used to express general actions which take place all the time or iteratively.

• She works as a teacher of biology at school.
• I usually eat porridge for breakfast.
• Sometimes they come to visit their granny.
• It is snowy in winter in this region.
• He often buys cucumbers in this greengrocery.