can compare
Regular verb: compare - compared- compared

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can compare
you can compare
she can compare
we can compare
you can compare
they can compare 	I can be comparing
you can be comparing
she can be comparing
we can be comparing
you can be comparing
they can be comparing	I can have compared
you can have compared
she can have compared
we can have compared
you can have compared
they can have compared	I can have been comparing
you can have been comparing
she can have been comparing
we can have been comparing
you can have been comparing
they can have been comparing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot compare
you cannot compare
she cannot compare
we cannot compare
you cannot compare
they cannot compare 	I cannot be comparing
you cannot be comparing
she cannot be comparing
we cannot be comparing
you cannot be comparing
they cannot be comparing	I cannot have compared
you cannot have compared
she cannot have compared
we cannot have compared
you cannot have compared
they cannot have compared	I cannot have been comparing
you cannot have been comparing
she cannot have been comparing
we cannot have been comparing
you cannot have been comparing
they cannot have been comparing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I compare?
can you compare?
can she compare?
can we compare?
can you compare?
can they compare? 	can I be comparing?
can you be comparing?
can she be comparing?
can we be comparing?
can you be comparing?
can they be comparing? 	can I have compared?
can you have compared?
can she have compared?
can we have compared?
can you have compared?
can they have compared? 	can I have been comparing?
can you have been comparing?
can she have been comparing?
can we have been comparing?
can you have been comparing?
can they have been comparing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not compare?
can you not compare?
can she not compare?
can we not compare?
can you not compare?
can they not compare? 	can I not be comparing?
can you not be comparing?
can she not be comparing?
can we not be comparing?
can you not be comparing?
can they not be comparing? 	can I not have compared?
can you not have compared?
can she not have compared?
can we not have compared?
can you not have compared?
can they not have compared? 	can I not have been comparing?
can you not have been comparing?
can she not have been comparing?
can we not have been comparing?
can you not have been comparing?
can they not have been comparing?