Conjugaison du verbe anglais
CAN PREASCERTAIN

Verbe régulier : preascertain - preascertained - preascertained

Affirmation

Forme simple	Forme en V-ing
I can preascertain you can preascertain he can preascertain we can preascertain you can preascertain they can preascertain	I can be preascertaining you can be preascertaining he can be preascertaining we can be preascertaining you can be preascertaining they can be preascertaining
Perfect	Perfect en V-ing
I can have preascertained you can have preascertained he can have preascertained we can have preascertained you can have preascertained they can have preascertained	I can have been preascertaining you can have been preascertaining he can have been preascertaining we can have been preascertaining you can have been preascertaining they can have been preascertaining

Négation

Forme simple	Forme en V-ing
I can't preascertain you can't preascertain he can't preascertain we can't preascertain you can't preascertain they can't preascertain	I can't be preascertaining you can't be preascertaining he can't be preascertaining we can't be preascertaining you can't be preascertaining they can't be preascertaining
Perfect	Perfect en V-ing
I can't have preascertained you can't have preascertained he can't have preascertained we can't have preascertained you can't have preascertained they can't have preascertained	I can't have been preascertaining you can't have been preascertaining he can't have been preascertaining we can't have been preascertaining you can't have been preascertaining they can't have been preascertaining

Forme interrogative

Forme simple	Forme en V-ing
can I preascertain? can you preascertain? can he preascertain? can we preascertain? can you preascertain? can they preascertain?	can I be preascertaining? can you be preascertaining? can he be preascertaining? can we be preascertaining? can you be preascertaining? can they be preascertaining?
Perfect	Perfect en V-ing
can I have preascertained? can you have preascertained? can he have preascertained? can we have preascertained? can you have preascertained? can they have preascertained?	can I have been preascertaining? can you have been preascertaining? can he have been preascertaining? can we have been preascertaining? can you have been preascertaining? can they have been preascertaining?

Forme interro-négative

Forme simple	Forme en V-ing
can't I preascertain? can't you preascertain? can't he preascertain? can't we preascertain? can't you preascertain? can't they preascertain?	can't I be preascertaining? can't you be preascertaining? can't he be preascertaining? can't we be preascertaining? can't you be preascertaining? can't they be preascertaining?
Perfect	Perfect en V-ing
can't I have preascertained? can't you have preascertained? can't he have preascertained? can't we have preascertained? can't you have preascertained? can't they have preascertained?	can't I have been preascertaining? can't you have been preascertaining? can't he have been preascertaining? can't we have been preascertaining? can't you have been preascertaining? can't they have been preascertaining?