Ex: Learning is a complex process.
Ex: They work on a very interesting experiment.
¨VERB as GERUND¨
Ex: Dr. Higuera is working in the lab.
¨INFINITIVES AFTER A PREPOSITION¨
Ex: We are capable of doing the assignment on our own.
¨PRESENT TENSE IN RELATIVE CLAUSE¨
Ex: All printed books belonging to the library must be returned.