4. Ir + a + infinitive (going to do something).
Poder + a + infinitive (are able to do
something).
Querer + a + infinitive (want to do something).
Deber + a + infinitive (should do something).
Tener que + infinitive (to have to do
something).
Soler + a + infinitive (to be accustomed to…)
5. When two adverbs modify the same verb, only the
second one uses the (–mente)ending is the same as
the feminine singular form of the adjective.
Adjectives Feminine
Constante -Constante
Difícil - Difícil
Perfeto -Perfeta
Alegre -Alegre