must orbit
Verbe régulier : orbit - orbited- orbited
Traduction française : graviter ou tourner autour de - décrire une orbite 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must orbit
you must orbit
she must orbit
we must orbit
you must orbit
they must orbit 	I must be orbiting
you must be orbiting
she must be orbiting
we must be orbiting
you must be orbiting
they must be orbiting	I must have orbited
you must have orbited
she must have orbited
we must have orbited
you must have orbited
they must have orbited	I must have been orbiting
you must have been orbiting
she must have been orbiting
we must have been orbiting
you must have been orbiting
they must have been orbiting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't orbit
you mustn't orbit
she mustn't orbit
we mustn't orbit
you mustn't orbit
they mustn't orbit 	I mustn't be orbiting
you mustn't be orbiting
she mustn't be orbiting
we mustn't be orbiting
you mustn't be orbiting
they mustn't be orbiting	I mustn't have orbited
you mustn't have orbited
she mustn't have orbited
we mustn't have orbited
you mustn't have orbited
they mustn't have orbited	I mustn't have been orbiting
you mustn't have been orbiting
she mustn't have been orbiting
we mustn't have been orbiting
you mustn't have been orbiting
they mustn't have been orbiting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I orbit?
must you orbit?
must she orbit?
must we orbit?
must you orbit?
must they orbit? 	must I be orbiting?
must you be orbiting?
must she be orbiting?
must we be orbiting?
must you be orbiting?
must they be orbiting? 	must I have orbited?
must you have orbited?
must she have orbited?
must we have orbited?
must you have orbited?
must they have orbited? 	must I have been orbiting?
must you have been orbiting?
must she have been orbiting?
must we have been orbiting?
must you have been orbiting?
must they have been orbiting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I orbit?
mustn't you orbit?
mustn't she orbit?
mustn't we orbit?
mustn't you orbit?
mustn't they orbit? 	mustn't I be orbiting?
mustn't you be orbiting?
mustn't she be orbiting?
mustn't we be orbiting?
mustn't you be orbiting?
mustn't they be orbiting? 	mustn't I have orbited?
mustn't you have orbited?
mustn't she have orbited?
mustn't we have orbited?
mustn't you have orbited?
mustn't they have orbited? 	mustn't I have been orbiting?
mustn't you have been orbiting?
mustn't she have been orbiting?
mustn't we have been orbiting?
mustn't you have been orbiting?
mustn't they have been orbiting?