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 mustn't proofread you mustn't proofread he mustn't proofread we mustn't proofread you mustn't proofread they mustn't proofread	I mustn't be proofreading you mustn't be proofreading he mustn't be proofreading we mustn't be proofreading you mustn't be proofreading they mustn't be proofreading
Perfect	V-ing perfect
I mustn't have proofread you mustn't have proofread he mustn't have proofread we mustn't have proofread you mustn't have proofread they mustn't have proofread	I mustn't have been proofreading you mustn't have been proofreading he mustn't have been proofreading we mustn't have been proofreading you mustn't have been proofreading they mustn't 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
mustn't I proofread? mustn't you proofread? mustn't he proofread? mustn't we proofread? mustn't you proofread? mustn't they proofread?	mustn't I be proofreading? mustn't you be proofreading? mustn't he be proofreading? mustn't we be proofreading? mustn't you be proofreading? mustn't they be proofreading?
Perfect	V-ing perfect
mustn't I have proofread? mustn't you have proofread? mustn't he have proofread? mustn't we have proofread? mustn't you have proofread? mustn't they have proofread?	mustn't I have been proofreading? mustn't you have been proofreading? mustn't he have been proofreading? mustn't we have been proofreading? mustn't you have been proofreading? mustn't they have been proofreading?