to ascertain
Verbe régulier : ascertain - ascertained- ascertained
Traduction française : établir - constater 

Indicatif 	
Présent 	Présent continu 	Prétérit 	Prétérit continu 	
I ascertain
you ascertain
she ascertains
we ascertain
you ascertain
they ascertain 	I'mascertaining
you'reascertaining
she'sascertaining
we'reascertaining
you'reascertaining
they'reascertaining	I ascertained
you ascertained
she ascertained
we ascertained
you ascertained
they ascertained	Iwasascertaining
youwereascertaining
shewasascertaining
wewereascertaining
youwereascertaining
theywereascertaining	
Present perfect 	Present perfect continu 	Pluperfect 	Pluperfect continu 	
I've ascertained
you've ascertained
she's ascertained
we've ascertained
you've ascertained
they've ascertained	I'vebeen ascertaining
you'vebeen ascertaining
she'sbeen ascertaining
we'vebeen ascertaining
you'vebeen ascertaining
they'vebeen ascertaining	I'd ascertained
you'd ascertained
she'd ascertained
we'd ascertained
you'd ascertained
they'd ascertained	I'd been ascertaining
you'd been ascertaining
she'd been ascertaining
we'd been ascertaining
you'd been ascertaining
they'd been ascertaining	
Futur 	Futur continu 	Futur antérieur 	Futur antérieur continu 	
I'll ascertain
you'll ascertain
she'll ascertain
we'll ascertain
you'll ascertain
they'll ascertain 	I'll be ascertaining
you'll be ascertaining
she'll be ascertaining
we'll be ascertaining
you'll be ascertaining
they'll be ascertaining	I'll have ascertained
you'll have ascertained
she'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
she'll have been ascertaining
we'll have been ascertaining
you'll have been ascertaining
they'll have been ascertaining	

Conditionnel 	
Présent 	Présent continu 	Passé 	Passé continu 	
I'd ascertain
you'd ascertain
she'd ascertain
we'd ascertain
you'd ascertain
they'd ascertain 	I'd be ascertaining
you'd be ascertaining
she'd be ascertaining
we'd be ascertaining
you'd be ascertaining
they'd be ascertaining	I'd have ascertained
you'd have ascertained
she'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
she'd have been ascertaining
we'd have been ascertaining
you'd have been ascertaining
they'd have been ascertaining	

Infinitif 	
Impératif 	
Infinitif 	 	Impératif 	 	
to ascertain 	 	ascertain
Let's ascertain
ascertain 	 	

Participe 	
Présent 	Passé 	 	 	
ascertaining	ascertained