Verbo regolare: preascertain - preascertained - preascertained
Affermazione
Forma semplice
I must preascertain you must preascertain she must preascertain we must preascertain you must preascertain they must preascertain
Forma con V-ing
I must be preascertaining you must be preascertaining she must be preascertaining we must be preascertaining you must be preascertaining they must be preascertaining
Perfetto
I must have preascertained you must have preascertained she must have preascertained we must have preascertained you must have preascertained they must have preascertained
Perfetto con V-ing
I must have been preascertaining you must have been preascertaining she must have been preascertaining we must have been preascertaining you must have been preascertaining they must have been preascertaining
Negazione
Forma semplice
I mustn't preascertain you mustn't preascertain she mustn't preascertain we mustn't preascertain you mustn't preascertain they mustn't preascertain
Forma con V-ing
I mustn't be preascertaining you mustn't be preascertaining she mustn't be preascertaining we mustn't be preascertaining you mustn't be preascertaining they mustn't be preascertaining
Perfetto
I mustn't have preascertained you mustn't have preascertained she mustn't have preascertained we mustn't have preascertained you mustn't have preascertained they mustn't have preascertained
Perfetto con V-ing
I mustn't have been preascertaining you mustn't have been preascertaining she mustn't have been preascertaining we mustn't have been preascertaining you mustn't have been preascertaining they mustn't have been preascertaining
Forma interrogativa
Forma semplice
must I preascertain? must you preascertain? must she preascertain? must we preascertain? must you preascertain? must they preascertain?
Forma con V-ing
must I be preascertaining? must you be preascertaining? must she be preascertaining? must we be preascertaining? must you be preascertaining? must they be preascertaining?
Perfetto
must I have preascertained? must you have preascertained? must she have preascertained? must we have preascertained? must you have preascertained? must they have preascertained?
Perfetto con V-ing
must I have been preascertaining? must you have been preascertaining? must she have been preascertaining? must we have been preascertaining? must you have been preascertaining? must they have been preascertaining?
Forma interro-negativa
Forma semplice
mustn't I preascertain? mustn't you preascertain? mustn't she preascertain? mustn't we preascertain? mustn't you preascertain? mustn't they preascertain?
Forma con V-ing
mustn't I be preascertaining? mustn't you be preascertaining? mustn't she be preascertaining? mustn't we be preascertaining? mustn't you be preascertaining? mustn't they be preascertaining?
Perfetto
mustn't I have preascertained? mustn't you have preascertained? mustn't she have preascertained? mustn't we have preascertained? mustn't you have preascertained? mustn't they have preascertained?
Perfetto con V-ing
mustn't I have been preascertaining? mustn't you have been preascertaining? mustn't she have been preascertaining? mustn't we have been preascertaining? mustn't you have been preascertaining? mustn't they have been preascertaining?