must foster
Verbe régulier : foster - fostered- fostered
Traduction française : (UK) accueillir - nourrir 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must foster
you must foster
she must foster
we must foster
you must foster
they must foster 	I must be fostering
you must be fostering
she must be fostering
we must be fostering
you must be fostering
they must be fostering	I must have fostered
you must have fostered
she must have fostered
we must have fostered
you must have fostered
they must have fostered	I must have been fostering
you must have been fostering
she must have been fostering
we must have been fostering
you must have been fostering
they must have been fostering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not foster
you must not foster
she must not foster
we must not foster
you must not foster
they must not foster 	I must not be fostering
you must not be fostering
she must not be fostering
we must not be fostering
you must not be fostering
they must not be fostering	I must not have fostered
you must not have fostered
she must not have fostered
we must not have fostered
you must not have fostered
they must not have fostered	I must not have been fostering
you must not have been fostering
she must not have been fostering
we must not have been fostering
you must not have been fostering
they must not have been fostering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I foster?
must you foster?
must she foster?
must we foster?
must you foster?
must they foster? 	must I be fostering?
must you be fostering?
must she be fostering?
must we be fostering?
must you be fostering?
must they be fostering? 	must I have fostered?
must you have fostered?
must she have fostered?
must we have fostered?
must you have fostered?
must they have fostered? 	must I have been fostering?
must you have been fostering?
must she have been fostering?
must we have been fostering?
must you have been fostering?
must they have been fostering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not foster?
must you not foster?
must she not foster?
must we not foster?
must you not foster?
must they not foster? 	must I not be fostering?
must you not be fostering?
must she not be fostering?
must we not be fostering?
must you not be fostering?
must they not be fostering? 	must I not have fostered?
must you not have fostered?
must she not have fostered?
must we not have fostered?
must you not have fostered?
must they not have fostered? 	must I not have been fostering?
must you not have been fostering?
must she not have been fostering?
must we not have been fostering?
must you not have been fostering?
must they not have been fostering?