to alter
Verbo regular: alter - altered- altered

Indicativo 	
Presente 	Presente continuo 	Pretérito 	Pretérito continuo 	
I alter
you alter
he alters
we alter
you alter
they alter 	Iamaltering
youarealtering
heisaltering
wearealtering
youarealtering
theyarealtering	I altered
you altered
he altered
we altered
you altered
they altered	Iwasaltering
youwerealtering
hewasaltering
wewerealtering
youwerealtering
theywerealtering	
Presente perfecto 	Presente perfecto continuo 	Pluscuamperfecto 	Pluscuamperfecto continuo 	
I have altered
you have altered
he has altered
we have altered
you have altered
they have altered	I have been altering
you have been altering
hehasbeen altering
we have been altering
you have been altering
they have been altering	I had altered
you had altered
he had altered
we had altered
you had altered
they had altered	I had been altering
you had been altering
he had been altering
we had been altering
you had been altering
they had been altering	
Futuro simple 	Futuro continuo 	Futuro perfecto 	Futuro perfecto contínuo 	
I will alter
you will alter
he will alter
we will alter
you will alter
they will alter 	I will be altering
you will be altering
he will be altering
we will be altering
you will be altering
they will be altering	I will have altered
you will have altered
he will have altered
we will have altered
you will have altered
they will have altered	I will have been altering
you will have been altering
he will have been altering
we will have been altering
you will have been altering
they will have been altering	

Condicional 	
Presente 	Presente continuo 	Passado 	Passado continuo 	
I would alter
you would alter
he would alter
we would alter
you would alter
they would alter 	I would be altering
you would be altering
he would be altering
we would be altering
you would be altering
they would be altering	I would have altered
you would have altered
he would have altered
we would have altered
you would have altered
they would have altered	I would have been altering
you would have been altering
he would have been altering
we would have been altering
you would have been altering
they would have been altering	

Infinitivo 	
Imperativo 	
Infinitivo 	 	Imperativo 	 	
to alter 	 	alter
Let's alter
alter 	 	

Participio 	
Presente 	Passado 	 	 	
altering	altered