must land
Verbe régulier : land - landed- landed
Traduction française : atterrir - poser 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must land
you must land
he must land
we must land
you must land
they must land 	I must be landing
you must be landing
he must be landing
we must be landing
you must be landing
they must be landing	I must have landed
you must have landed
he must have landed
we must have landed
you must have landed
they must have landed	I must have been landing
you must have been landing
he must have been landing
we must have been landing
you must have been landing
they must have been landing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't land
you mustn't land
he mustn't land
we mustn't land
you mustn't land
they mustn't land 	I mustn't be landing
you mustn't be landing
he mustn't be landing
we mustn't be landing
you mustn't be landing
they mustn't be landing	I mustn't have landed
you mustn't have landed
he mustn't have landed
we mustn't have landed
you mustn't have landed
they mustn't have landed	I mustn't have been landing
you mustn't have been landing
he mustn't have been landing
we mustn't have been landing
you mustn't have been landing
they mustn't have been landing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I land?
must you land?
must he land?
must we land?
must you land?
must they land? 	must I be landing?
must you be landing?
must he be landing?
must we be landing?
must you be landing?
must they be landing? 	must I have landed?
must you have landed?
must he have landed?
must we have landed?
must you have landed?
must they have landed? 	must I have been landing?
must you have been landing?
must he have been landing?
must we have been landing?
must you have been landing?
must they have been landing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I land?
mustn't you land?
mustn't he land?
mustn't we land?
mustn't you land?
mustn't they land? 	mustn't I be landing?
mustn't you be landing?
mustn't he be landing?
mustn't we be landing?
mustn't you be landing?
mustn't they be landing? 	mustn't I have landed?
mustn't you have landed?
mustn't he have landed?
mustn't we have landed?
mustn't you have landed?
mustn't they have landed? 	mustn't I have been landing?
mustn't you have been landing?
mustn't he have been landing?
mustn't we have been landing?
mustn't you have been landing?
mustn't they have been landing?