simple present (theory)

Exemplos
Uso

Habitos regulares e rotinas diárias:

Where do you work?The store opens at 9 o'clock.She lives in New York.
Situações permanentes ou de longa duração
I usually get up at 7 o'clock.She doesn't often go to the cinema.When do they usually have lunch

Fatos:

The Earth revolves around the Sun.What does 'strange' mean?
Water doesn't boil at 20°.

Sentimentos:

I love walking around late at night during the summer.She hates flying!What do you like? I don't want to live in Texas.
Opiniões e estados de espírito:

He doesn't agree with you.I think he is a wonderful student.What do you consider your best accomplishment.
horários:

The plane leaves at 4 p.m.When do courses begin this semester?The train doesn't arrive until 10.35.

Expressões de tempo comumente usadas no simple present
usually, always, often, sometimes, on Saturdays, at weekends (on weekends US English), rarely, ocasionally, never, seldom