Final answer:
In Spanish, verbs are formed by adding certain endings to the stem of the verb. To form the present tense for an -ar verb, you add the following endings: -o, -as, -a, -amos, -áis, -an.
Step-by-step explanation:
In Spanish, verbs are formed by adding certain endings to the stem of the verb. The stem of the verb is the part of the verb that is left when you remove the -ar, -er, or -ir ending. For example, in the verb hablar (to speak), the stem is habl-. To form the present tense for an -ar verb, you add the following endings: -o, -as, -a, -amos, -áis, -an. So, to say 'I speak' in Spanish, you would say 'yo hablo'.
Learn more about Forming verbs in Spanish