The third person singular form of the verb is used to represent the simple present tense. As far as regular verbs are concerned, the third person singular form is indicated by the addition of an ‘s’ or ‘es’ to the end of the root verb.

Examples of Third Person Singular Present Form:
Tom likes having cereal for breakfast.
Root verb – like, Third person singular form – likes

Sheela teaches English for sixth grade students.
Root verb – teach, Third person singular form – teaches

My father reads the newspaper everyday.
Root verb – read, Third person singular form – reads

The Sun rises in the east and sets in the west.
Root verb – rise, set; Third person singular form – rises, sets