Conjugaison du verbe anglais MUST BACKCROSS

Verbe régulier : backcross - backcrossed - backcrossed

Affirmation

Forme simple

I must backcross
you must backcross
he must backcross
we must backcross
you must backcross
they must backcross

Forme en V-ing

I must be backcrossing
you must be backcrossing
he must be backcrossing
we must be backcrossing
you must be backcrossing
they must be backcrossing

Perfect

I must have backcrossed
you must have backcrossed
he must have backcrossed
we must have backcrossed
you must have backcrossed
they must have backcrossed

Perfect en V-ing

I must have been backcrossing
you must have been backcrossing
he must have been backcrossing
we must have been backcrossing
you must have been backcrossing
they must have been backcrossing

Négation

Forme simple

I mustn't backcross
you mustn't backcross
he mustn't backcross
we mustn't backcross
you mustn't backcross
they mustn't backcross

Forme en V-ing

I mustn't be backcrossing
you mustn't be backcrossing
he mustn't be backcrossing
we mustn't be backcrossing
you mustn't be backcrossing
they mustn't be backcrossing

Perfect

I mustn't have backcrossed
you mustn't have backcrossed
he mustn't have backcrossed
we mustn't have backcrossed
you mustn't have backcrossed
they mustn't have backcrossed

Perfect en V-ing

I mustn't have been backcrossing
you mustn't have been backcrossing
he mustn't have been backcrossing
we mustn't have been backcrossing
you mustn't have been backcrossing
they mustn't have been backcrossing

Forme interrogative

Forme simple

must I backcross?
must you backcross?
must he backcross?
must we backcross?
must you backcross?
must they backcross?

Forme en V-ing

must I be backcrossing?
must you be backcrossing?
must he be backcrossing?
must we be backcrossing?
must you be backcrossing?
must they be backcrossing?

Perfect

must I have backcrossed?
must you have backcrossed?
must he have backcrossed?
must we have backcrossed?
must you have backcrossed?
must they have backcrossed?

Perfect en V-ing

must I have been backcrossing?
must you have been backcrossing?
must he have been backcrossing?
must we have been backcrossing?
must you have been backcrossing?
must they have been backcrossing?

Forme interro-négative

Forme simple

mustn't I backcross?
mustn't you backcross?
mustn't he backcross?
mustn't we backcross?
mustn't you backcross?
mustn't they backcross?

Forme en V-ing

mustn't I be backcrossing?
mustn't you be backcrossing?
mustn't he be backcrossing?
mustn't we be backcrossing?
mustn't you be backcrossing?
mustn't they be backcrossing?

Perfect

mustn't I have backcrossed?
mustn't you have backcrossed?
mustn't he have backcrossed?
mustn't we have backcrossed?
mustn't you have backcrossed?
mustn't they have backcrossed?

Perfect en V-ing

mustn't I have been backcrossing?
mustn't you have been backcrossing?
mustn't he have been backcrossing?
mustn't we have been backcrossing?
mustn't you have been backcrossing?
mustn't they have been backcrossing?

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