The meaning of the article

Question 1

What are the three types of articles?

Answer 1

Determinate: el, la, los, las, lo
Indeterminate: un, una, unos, unas
No article

Question 2

Which four phrases MUST have an article?

Answer 2

When saying come: eg. Gente en España come mucho (La gente/mucha gente)
When saying ser: eg. Gallinas no son tontas (las, algunas, mis)
When saying tener: eg. Arañas tienen ocho patas (las/todas las)
When saying dias: eg. me gustan dias con sol (los dias)

Question 3

When can a subject not use an article?

Answer 3

In refranes and newspaper titles