The present progressive is formed by conjugating the verb ESTAR and adding a present participle.

ESTAR		Present Participle (Gerund)		Present Progressive
estoy estamos estás estáis está están		Infinitive:   -AR             ANDO hablando -ER, -IR      IENDO corriendo		Yo estoy hablando.  Ellos están corriendo.

Vamos a practicar.

I.  Llene los espacios con el participio presente de los siguientes verbos.

Ejemplo:  hablar

comprar		vender
regalar		comprender
mirar		entender
encontrar		comer
empezar		temer
cenar		tener
andar		parecer
trabajar		ver
revisar		perder
jugar		ser

salir		leer
recibir		caer
escribir		servir
dividir		creer
decidir		oír
nutrir		traer
omitir		pedir
resumir		dormir
resistir		decir
seducir		sentir

II. Use the verb ESTAR and the gerund to make the following sentences. Do not include a subject pronoun. Just ESTAR and the gerund.
I am leaving.	.	You are reading. (informal/tú)	.
She is eating.	.	We are working.	.
They are writing.	.	I am serving.	.
You are buying. (formal/Ud.)	.	He is selling.	.
We are deciding.	.	We are playing.	.
They are watching.	.	I am bringing.	.
You all are finding. (Uds.)	.	She is losing.	.
We are resuming.	.	They are sleeping.	.
I am resisting.	.	You are saying. (tú)	.
I am seeing.	.	You are having. (formal/Ud.)	.