could monitor
Verbo regular: monitor - monitored- monitored

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could monitor
you could monitor
she could monitor
we could monitor
you could monitor
they could monitor 	I could be monitoring
you could be monitoring
she could be monitoring
we could be monitoring
you could be monitoring
they could be monitoring	I could have monitored
you could have monitored
she could have monitored
we could have monitored
you could have monitored
they could have monitored	I could have been monitoring
you could have been monitoring
she could have been monitoring
we could have been monitoring
you could have been monitoring
they could have been monitoring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't monitor
you couldn't monitor
she couldn't monitor
we couldn't monitor
you couldn't monitor
they couldn't monitor 	I couldn't be monitoring
you couldn't be monitoring
she couldn't be monitoring
we couldn't be monitoring
you couldn't be monitoring
they couldn't be monitoring	I couldn't have monitored
you couldn't have monitored
she couldn't have monitored
we couldn't have monitored
you couldn't have monitored
they couldn't have monitored	I couldn't have been monitoring
you couldn't have been monitoring
she couldn't have been monitoring
we couldn't have been monitoring
you couldn't have been monitoring
they couldn't have been monitoring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I monitor?
could you monitor?
could she monitor?
could we monitor?
could you monitor?
could they monitor? 	could I be monitoring?
could you be monitoring?
could she be monitoring?
could we be monitoring?
could you be monitoring?
could they be monitoring? 	could I have monitored?
could you have monitored?
could she have monitored?
could we have monitored?
could you have monitored?
could they have monitored? 	could I have been monitoring?
could you have been monitoring?
could she have been monitoring?
could we have been monitoring?
could you have been monitoring?
could they have been monitoring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I monitor?
couldn't you monitor?
couldn't she monitor?
couldn't we monitor?
couldn't you monitor?
couldn't they monitor? 	couldn't I be monitoring?
couldn't you be monitoring?
couldn't she be monitoring?
couldn't we be monitoring?
couldn't you be monitoring?
couldn't they be monitoring? 	couldn't I have monitored?
couldn't you have monitored?
couldn't she have monitored?
couldn't we have monitored?
couldn't you have monitored?
couldn't they have monitored? 	couldn't I have been monitoring?
couldn't you have been monitoring?
couldn't she have been monitoring?
couldn't we have been monitoring?
couldn't you have been monitoring?
couldn't they have been monitoring?