English verb conjugation
MUST PROOFREAD

Irregular verb: proofread - proofread - proofread

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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