must ponder
Verbo regular: ponder - pondered- pondered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must ponder
you must ponder
he must ponder
we must ponder
you must ponder
they must ponder 	I must be pondering
you must be pondering
he must be pondering
we must be pondering
you must be pondering
they must be pondering	I must have pondered
you must have pondered
he must have pondered
we must have pondered
you must have pondered
they must have pondered	I must have been pondering
you must have been pondering
he must have been pondering
we must have been pondering
you must have been pondering
they must have been pondering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not ponder
you must not ponder
he must not ponder
we must not ponder
you must not ponder
they must not ponder 	I must not be pondering
you must not be pondering
he must not be pondering
we must not be pondering
you must not be pondering
they must not be pondering	I must not have pondered
you must not have pondered
he must not have pondered
we must not have pondered
you must not have pondered
they must not have pondered	I must not have been pondering
you must not have been pondering
he must not have been pondering
we must not have been pondering
you must not have been pondering
they must not have been pondering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I ponder?
must you ponder?
must he ponder?
must we ponder?
must you ponder?
must they ponder? 	must I be pondering?
must you be pondering?
must he be pondering?
must we be pondering?
must you be pondering?
must they be pondering? 	must I have pondered?
must you have pondered?
must he have pondered?
must we have pondered?
must you have pondered?
must they have pondered? 	must I have been pondering?
must you have been pondering?
must he have been pondering?
must we have been pondering?
must you have been pondering?
must they have been pondering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not ponder?
must you not ponder?
must he not ponder?
must we not ponder?
must you not ponder?
must they not ponder? 	must I not be pondering?
must you not be pondering?
must he not be pondering?
must we not be pondering?
must you not be pondering?
must they not be pondering? 	must I not have pondered?
must you not have pondered?
must he not have pondered?
must we not have pondered?
must you not have pondered?
must they not have pondered? 	must I not have been pondering?
must you not have been pondering?
must he not have been pondering?
must we not have been pondering?
must you not have been pondering?
must they not have been pondering?