to alter
Regular verb: alter - altered- altered

Indicative 	
Present 	Present continuous 	Preterite 	Preterite continuous 	
I alter
you alter
she alters
we alter
you alter
they alter 	Iamaltering
youarealtering
sheisaltering
wearealtering
youarealtering
theyarealtering	I altered
you altered
she altered
we altered
you altered
they altered	Iwasaltering
youwerealtering
shewasaltering
wewerealtering
youwerealtering
theywerealtering	
Present perfect 	Present perfect continuous 	Pluperfect 	Pluperfect continuous 	
I have altered
you have altered
she has altered
we have altered
you have altered
they have altered	I have been altering
you have been altering
shehasbeen altering
we have been altering
you have been altering
they have been altering	I had altered
you had altered
she had altered
we had altered
you had altered
they had altered	I had been altering
you had been altering
she had been altering
we had been altering
you had been altering
they had been altering	
Future 	Future continuous 	Future perfect 	Future perfect continuous 	
I will alter
you will alter
she will alter
we will alter
you will alter
they will alter 	I will be altering
you will be altering
she will be altering
we will be altering
you will be altering
they will be altering	I will have altered
you will have altered
she 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
she will have been altering
we will have been altering
you will have been altering
they will have been altering	

Conditional 	
Present 	Present continuous 	Past 	Past continuous 	
I would alter
you would alter
she would alter
we would alter
you would alter
they would alter 	I would be altering
you would be altering
she would be altering
we would be altering
you would be altering
they would be altering	I would have altered
you would have altered
she 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
she would have been altering
we would have been altering
you would have been altering
they would have been altering	

Infinitive 	
Imperative 	
Infinitive 	 	Imperative 	 	
to alter 	 	alter
Let's alter
alter 	 	

Participle 	
Present 	Past 	 	 	
altering	altered