English verb conjugation
CAN PROOFREAD

Irregular verb: proofread - proofread - proofread

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?