must spark
Verbe régulier : spark - sparked- sparked
Traduction française : susciter - jeter des étincelles 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must spark
you must spark
he must spark
we must spark
you must spark
they must spark 	I must be sparking
you must be sparking
he must be sparking
we must be sparking
you must be sparking
they must be sparking	I must have sparked
you must have sparked
he must have sparked
we must have sparked
you must have sparked
they must have sparked	I must have been sparking
you must have been sparking
he must have been sparking
we must have been sparking
you must have been sparking
they must have been sparking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't spark
you mustn't spark
he mustn't spark
we mustn't spark
you mustn't spark
they mustn't spark 	I mustn't be sparking
you mustn't be sparking
he mustn't be sparking
we mustn't be sparking
you mustn't be sparking
they mustn't be sparking	I mustn't have sparked
you mustn't have sparked
he mustn't have sparked
we mustn't have sparked
you mustn't have sparked
they mustn't have sparked	I mustn't have been sparking
you mustn't have been sparking
he mustn't have been sparking
we mustn't have been sparking
you mustn't have been sparking
they mustn't have been sparking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I spark?
must you spark?
must he spark?
must we spark?
must you spark?
must they spark? 	must I be sparking?
must you be sparking?
must he be sparking?
must we be sparking?
must you be sparking?
must they be sparking? 	must I have sparked?
must you have sparked?
must he have sparked?
must we have sparked?
must you have sparked?
must they have sparked? 	must I have been sparking?
must you have been sparking?
must he have been sparking?
must we have been sparking?
must you have been sparking?
must they have been sparking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I spark?
mustn't you spark?
mustn't he spark?
mustn't we spark?
mustn't you spark?
mustn't they spark? 	mustn't I be sparking?
mustn't you be sparking?
mustn't he be sparking?
mustn't we be sparking?
mustn't you be sparking?
mustn't they be sparking? 	mustn't I have sparked?
mustn't you have sparked?
mustn't he have sparked?
mustn't we have sparked?
mustn't you have sparked?
mustn't they have sparked? 	mustn't I have been sparking?
mustn't you have been sparking?
mustn't he have been sparking?
mustn't we have been sparking?
mustn't you have been sparking?
mustn't they have been sparking?