The document discusses the use of the present simple tense in English. It is used to describe habits and routines, facts that are always or generally true, and more permanent situations. Examples are given such as "I get up at seven o'clock" to describe a daily habit and "Water boils at 100o" to describe a fact. The present simple is also used to describe feelings and thoughts such as "I like play football" or "I think that catalonia should be free."