can proofread
Irregular verb: proofread - proofread- proofread

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can proofread
you can proofread
he can proofread
we can proofread
you can proofread
they can proofread 	I can be proofreading
you can be proofreading
he can be proofreading
we can be proofreading
you can be proofreading
they can be proofreading	I can have proofread
you can have proofread
he can have proofread
we can have proofread
you can have proofread
they can have proofread	I can have been proofreading
you can have been proofreading
he can have been proofreading
we can have been proofreading
you can have been proofreading
they can have been proofreading	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot proofread
you cannot proofread
he cannot proofread
we cannot proofread
you cannot proofread
they cannot proofread 	I cannot be proofreading
you cannot be proofreading
he cannot be proofreading
we cannot be proofreading
you cannot be proofreading
they cannot be proofreading	I cannot have proofread
you cannot have proofread
he cannot have proofread
we cannot have proofread
you cannot have proofread
they cannot have proofread	I cannot have been proofreading
you cannot have been proofreading
he cannot have been proofreading
we cannot have been proofreading
you cannot have been proofreading
they cannot have been proofreading	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I proofread?
can you proofread?
can he proofread?
can we proofread?
can you proofread?
can they proofread? 	can I be proofreading?
can you be proofreading?
can he be proofreading?
can we be proofreading?
can you be proofreading?
can they be proofreading? 	can I have proofread?
can you have proofread?
can he have proofread?
can we have proofread?
can you have proofread?
can they have proofread? 	can I have been proofreading?
can you have been proofreading?
can he have been proofreading?
can we have been proofreading?
can you have been proofreading?
can they have been proofreading? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not proofread?
can you not proofread?
can he not proofread?
can we not proofread?
can you not proofread?
can they not proofread? 	can I not be proofreading?
can you not be proofreading?
can he not be proofreading?
can we not be proofreading?
can you not be proofreading?
can they not be proofreading? 	can I not have proofread?
can you not have proofread?
can he not have proofread?
can we not have proofread?
can you not have proofread?
can they not have proofread? 	can I not have been proofreading?
can you not have been proofreading?
can he not have been proofreading?
can we not have been proofreading?
can you not have been proofreading?
can they not have been proofreading?