could oppose
Regular verb: oppose - opposed- opposed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could oppose
you could oppose
he could oppose
we could oppose
you could oppose
they could oppose 	I could be opposing
you could be opposing
he could be opposing
we could be opposing
you could be opposing
they could be opposing	I could have opposed
you could have opposed
he could have opposed
we could have opposed
you could have opposed
they could have opposed	I could have been opposing
you could have been opposing
he could have been opposing
we could have been opposing
you could have been opposing
they could have been opposing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not oppose
you could not oppose
he could not oppose
we could not oppose
you could not oppose
they could not oppose 	I could not be opposing
you could not be opposing
he could not be opposing
we could not be opposing
you could not be opposing
they could not be opposing	I could not have opposed
you could not have opposed
he could not have opposed
we could not have opposed
you could not have opposed
they could not have opposed	I could not have been opposing
you could not have been opposing
he could not have been opposing
we could not have been opposing
you could not have been opposing
they could not have been opposing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I oppose?
could you oppose?
could he oppose?
could we oppose?
could you oppose?
could they oppose? 	could I be opposing?
could you be opposing?
could he be opposing?
could we be opposing?
could you be opposing?
could they be opposing? 	could I have opposed?
could you have opposed?
could he have opposed?
could we have opposed?
could you have opposed?
could they have opposed? 	could I have been opposing?
could you have been opposing?
could he have been opposing?
could we have been opposing?
could you have been opposing?
could they have been opposing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not oppose?
could you not oppose?
could he not oppose?
could we not oppose?
could you not oppose?
could they not oppose? 	could I not be opposing?
could you not be opposing?
could he not be opposing?
could we not be opposing?
could you not be opposing?
could they not be opposing? 	could I not have opposed?
could you not have opposed?
could he not have opposed?
could we not have opposed?
could you not have opposed?
could they not have opposed? 	could I not have been opposing?
could you not have been opposing?
could he not have been opposing?
could we not have been opposing?
could you not have been opposing?
could they not have been opposing?