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

Indicatif 	
Présent 	Présent continu 	Prétérit 	Prétérit continu 	
I don't ascertain
you don't ascertain
he doesn't ascertain
we don't ascertain
you don't ascertain
they don't ascertain 	I'mnot ascertaining
youaren't ascertaining
heisn't ascertaining
wearen't ascertaining
youaren't ascertaining
theyaren't ascertaining	I didn't ascertain
you didn't ascertain
he didn't ascertain
we didn't ascertain
you didn't ascertain
they didn't ascertain 	Iwasn't ascertaining
youweren't ascertaining
hewasn't ascertaining
weweren't ascertaining
youweren't ascertaining
theyweren't ascertaining	
Present perfect 	Present perfect continu 	Pluperfect 	Pluperfect continu 	
I haven't ascertained
you haven't ascertained
he hasn't ascertained
we haven't ascertained
you haven't ascertained
they haven't ascertained	I haven't  been ascertaining
you haven't  been ascertaining
he hasn't  been ascertaining
we haven't  been ascertaining
you haven't  been ascertaining
they haven't  been ascertaining	I hadn't ascertained
you hadn't ascertained
he hadn't ascertained
we hadn't ascertained
you hadn't ascertained
they hadn't ascertained	I hadn't been ascertaining
you hadn't been ascertaining
he hadn't been ascertaining
we hadn't been ascertaining
you hadn't been ascertaining
they hadn't been ascertaining	
Futur 	Futur continu 	Futur antérieur 	Futur antérieur continu 	
I won't ascertain
you won't ascertain
he won't ascertain
we won't ascertain
you won't ascertain
they won't ascertain 	I won't be ascertaining
you won't be ascertaining
he won't be ascertaining
we won't be ascertaining
you won't be ascertaining
they won't be ascertaining	I won't have ascertained
you won't have ascertained
he won't have ascertained
we won't have ascertained
you won't have ascertained
they won't have ascertained	I won't have been ascertaining
you won't have been ascertaining
he won't have been ascertaining
we won't have been ascertaining
you won't have been ascertaining
they won't have been ascertaining	

Conditionnel 	
Présent 	Présent continu 	Passé 	Passé continu 	
I wouldn't ascertain
you wouldn't ascertain
he wouldn't ascertain
we wouldn't ascertain
you wouldn't ascertain
they wouldn't ascertain 	I wouldn't be ascertaining
you wouldn't be ascertaining
he wouldn't be ascertaining
we wouldn't be ascertaining
you wouldn't be ascertaining
they wouldn't be ascertaining	I wouldn't have ascertained
you wouldn't have ascertained
he wouldn't have ascertained
we wouldn't have ascertained
you wouldn't have ascertained
they wouldn't have ascertained	I wouldn't have been ascertaining
you wouldn't have been ascertaining
he wouldn't have been ascertaining
we wouldn't have been ascertaining
you wouldn't have been ascertaining
they wouldn't have been ascertaining	

Infinitif 	
Impératif 	
Infinitif 	 	Impératif 	 	
to ascertain 	 	do not ascertain
Let's not ascertain
do not ascertain 	 	

Participe 	
Présent 	Passé 	 	 	
ascertaining	ascertained