to ascertain
Verbo regular: ascertain - ascertained- ascertained

Indicativo 	
Presente 	Presente contínuo 	Pretérito 	Preterito contínuo 	
I ascertain
you ascertain
he ascertains
we ascertain
you ascertain
they ascertain 	I'mascertaining
you'reascertaining
he'sascertaining
we'reascertaining
you'reascertaining
they'reascertaining	I ascertained
you ascertained
he ascertained
we ascertained
you ascertained
they ascertained	Iwasascertaining
youwereascertaining
hewasascertaining
wewereascertaining
youwereascertaining
theywereascertaining	
Presente perfeito 	Presente perfeito contínuo 	Mais perfeito 	Contínuo mais perfeito 	
I've ascertained
you've ascertained
he's ascertained
we've ascertained
you've ascertained
they've ascertained	I'vebeen ascertaining
you'vebeen ascertaining
he'sbeen ascertaining
we'vebeen ascertaining
you'vebeen ascertaining
they'vebeen ascertaining	I'd ascertained
you'd ascertained
he'd ascertained
we'd ascertained
you'd ascertained
they'd ascertained	I'd been ascertaining
you'd been ascertaining
he'd been ascertaining
we'd been ascertaining
you'd been ascertaining
they'd been ascertaining	
Futuro 	Futuro contínuo 	futuro perfeito 	futuro perfeito contínuo 	
I'll ascertain
you'll ascertain
he'll ascertain
we'll ascertain
you'll ascertain
they'll ascertain 	I'll be ascertaining
you'll be ascertaining
he'll be ascertaining
we'll be ascertaining
you'll be ascertaining
they'll be ascertaining	I'll have ascertained
you'll have ascertained
he'll have ascertained
we'll have ascertained
you'll have ascertained
they'll have ascertained	I'll have been ascertaining
you'll have been ascertaining
he'll have been ascertaining
we'll have been ascertaining
you'll have been ascertaining
they'll have been ascertaining	

Condicional 	
Presente 	Presente contínuo 	Passado 	Passado contínuo 	
I'd ascertain
you'd ascertain
he'd ascertain
we'd ascertain
you'd ascertain
they'd ascertain 	I'd be ascertaining
you'd be ascertaining
he'd be ascertaining
we'd be ascertaining
you'd be ascertaining
they'd be ascertaining	I'd have ascertained
you'd have ascertained
he'd have ascertained
we'd have ascertained
you'd have ascertained
they'd have ascertained	I'd have been ascertaining
you'd have been ascertaining
he'd have been ascertaining
we'd have been ascertaining
you'd have been ascertaining
they'd have been ascertaining	

Infinitivo 	
Imperativo 	
Infinitivo 	 	Imperativo 	 	
to ascertain 	 	ascertain
Let's ascertain
ascertain 	 	

Particípio 	
Presente 	Passado 	 	 	
ascertaining	ascertained