Present Smple Tense:

The present simple is used when we want to create things that happen in this time:
 For example: My mom travels around the world.

The auxiliar verbs for the present simple are DO or DOES, the DO is used with the pronouns I, We, You and They and the DOES is used with the pronouns He, She and It.
 For example: Does she talk with you?
                      Do you want to eat a sandwich?

In the present simple the verbs used with the pronouns He, She and It change their way to be written with a S, ES and IES depending the written form of the verbs.
 with S: travel-travels
            depend- depends
            make- makes
            give- gives 

With ES: the verbs with -ES, are the verbs that finish in: O, X, CH and SH.
              go- goes
              do- does
              fix- fixes  
              watch- watches
              wash- washes 

With IES: the verbs with -IES, are the verbs that end in y but before the y they have a consonant.
 For Example: fly- flies
                      study- studies 

In the next image we could see the forms to write the present simple: