Simple Present Tense

It rains a lot in Indonesia on December.
The sun rises in the east and sets in the west.
Koalas feed on eucalyptus leaves.
Water consists of hydrogen and oxygen.

Simple present is used to express general statement of fact and timeless truth. Something was true in the past, is true in the present, and will be true in the future.

I usually go swimming at the weekend.
The cafe opens at 7.30 in the morning.
He is a driver. He drives bus in the city.

Simple present is used to talk about things in general. Something happens all the time or repeatedly. Something is true in general.

I study for 2 hours every night.
She gets up at 5 every morning.
He always eats sandwich for lunch. 
Julie doesn't drink soda very often.

Simple present is used to express habitual or everyday activities.

His parents live in London.
John isn't lazy. He works hard most of the time.
He is an architect.
I have four brothers.

Simple present is used to tell permanent situations. 

How to construct a sentence in simple present? click here. 

To practice to make simple present sentences, click the links below.
Simple present - Practice 01
Simple present - Practice 02
Simple present - Practice 03
Simple present - Practice 04
Simple present exercise - Auxiliary