must forecast
Verbe irrégulier : forecast - forecast- forecast
Traduction française : prévoir - pronostiquer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must forecast
you must forecast
he must forecast
we must forecast
you must forecast
they must forecast 	I must be forecasting
you must be forecasting
he must be forecasting
we must be forecasting
you must be forecasting
they must be forecasting	I must have forecast
you must have forecast
he must have forecast
we must have forecast
you must have forecast
they must have forecast	I must have been forecasting
you must have been forecasting
he must have been forecasting
we must have been forecasting
you must have been forecasting
they must have been forecasting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not forecast
you must not forecast
he must not forecast
we must not forecast
you must not forecast
they must not forecast 	I must not be forecasting
you must not be forecasting
he must not be forecasting
we must not be forecasting
you must not be forecasting
they must not be forecasting	I must not have forecast
you must not have forecast
he must not have forecast
we must not have forecast
you must not have forecast
they must not have forecast	I must not have been forecasting
you must not have been forecasting
he must not have been forecasting
we must not have been forecasting
you must not have been forecasting
they must not have been forecasting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I forecast?
must you forecast?
must he forecast?
must we forecast?
must you forecast?
must they forecast? 	must I be forecasting?
must you be forecasting?
must he be forecasting?
must we be forecasting?
must you be forecasting?
must they be forecasting? 	must I have forecast?
must you have forecast?
must he have forecast?
must we have forecast?
must you have forecast?
must they have forecast? 	must I have been forecasting?
must you have been forecasting?
must he have been forecasting?
must we have been forecasting?
must you have been forecasting?
must they have been forecasting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not forecast?
must you not forecast?
must he not forecast?
must we not forecast?
must you not forecast?
must they not forecast? 	must I not be forecasting?
must you not be forecasting?
must he not be forecasting?
must we not be forecasting?
must you not be forecasting?
must they not be forecasting? 	must I not have forecast?
must you not have forecast?
must he not have forecast?
must we not have forecast?
must you not have forecast?
must they not have forecast? 	must I not have been forecasting?
must you not have been forecasting?
must he not have been forecasting?
must we not have been forecasting?
must you not have been forecasting?
must they not have been forecasting?