This is a summary of what you experienced this semester. This is the concept of the action. No one, in this example, is running, or dancing or singing. In Spanish, we drop the ar, er, ir ending. The article you use depends on the noun you use.
Nouns Remember that nouns are either feminine or masculine.
If it ends in o, the noun is most likely masculine. If it ends in a, the noun is most likely feminine. Adjectives Remember that adjectives describe or say something about the noun.