All verbs in Spanish in the infinitive form have one of these three endings 
AR- ER -  IR - 
cantar to sing leer to read ir  to go
camiinar to walk comer to eat reir to laugh
hablar to talk correr to run venir to come
estudiar to study aprender to learn abrir to open
comprar to buy vender to sell escribir to write
mirar to look saber to know sentir to feel
tomar to drink -  to take beber to drink vivir to live
bailar to dance tener to have salir to leave
jugar - tocar (el piano) to play poner to put recibir to receive
trabajar to work entender to understand batir  to shake
estar to be perder  to lose
dar  to give
crear  to create
 Gerundio simple
 (Present participle)
El Gerundio
In linguistics, “gerund” is a term used to refer to various non-finite verb forms in various languages:
This is the verb form that end in "ing" in English and "ando" or "endo" in Spanish. 
In both languages, the gerund is used to form the progressive tenses. 
As applied to English, it refers to what might be called a verb's action noun, which is one of the uses of the -ing form.
English gerund can be used as a noun, the Spanish gerund does not function as a noun.
Gerund simple = Present Participle, their meaning are identical .
El gerundio tiene valor adverbial.
Se forma con la raíz + -ando (verbos terminados en -ar) y -iendo (verbos terminados en -er e -ir)
The gerund has adverbial value.
Is formed with the root +-ando (-ar ending verbs) and-iendo ( in -er and-ir ending verbs)
Los dos usos principales son:
The two main uses are:
Con el verbo “estar” para expresar una acción simultánea con otra :
With the verb "estar" to express  a simultaneous action with another one: 
Está lloviendo.
It's raining.
En ese momento me estaba bañando.  In that moment I was having a bath.
¿Sabés en qué estoy pensando? Do you know what I'm thinking?
Estás escuchando las noticias? Are you listening to the news?
Estamos llegando a la ciudad. We are coming to town.
Con verbos de acción para expresar modo. 
With an "action" verbs to express way:
voy corriendo.   I go runing.
entró gritando.   He got in screaming.
estudia leyendo en voz alta. He is studying, reading aloud. 
Vino caminando. Hecome  walking.
Salió gritando. He came out screaming.
Llegó repartiendo regalos. He arrived giving gifts.
practice (mouse right bottom for new tab)
Reflexive verb
From the present participle ( gerundio) to a reflexive verb…..
the reflexive pronoun has to be atached to the end to the present participle.
And because we add another syllable to the present participle ( the pronoun) an accent mark is required
The reflexive pronoun changes according to the person it refers to.
present participle reflexive verb
yo ( me) tu (te) el  - ella (se) nosotros (nos)
levantando levantándome levantándote levantándose levantándonos
acostando acostándome acostándote acostándose acostándonos
bañando bañándome bañándote bañándose bañándonos
lavando lavándome lavándote lavándose lavándonos
comprando comprándome comprándote comprándose comprándonos
perdiendo perdiéndome perdiéndote periéndose perdiéndonos
viendo viéndome viéndote viéndose viéndonos
durmiendo durmiéndome durmiéndote durmiéndose durmiéndonos
The present participle is commonly used in the progresive tense. This tense is formed with the auxiliar verb ¨estar¨, ¨seguir´, ¨ir¨.
In order to express that an action is taking progress, the apropriate form of the auxiliary verb is used.
Then the progresive tense is formed ; auxiliar verb + present participle…………estoy lavando
If you want to form a reflexive verb from a present participle , the reflexive pronoun has to be placed at the end of the verb.
as you see the list above.

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