I can hasten you can hasten he can hasten we can hasten you can hasten they can hasten
V-ing form
I can be hastening you can be hastening he can be hastening we can be hastening you can be hastening they can be hastening
Perfect
I can have hastened you can have hastened he can have hastened we can have hastened you can have hastened they can have hastened
V-ing perfect
I can have been hastening you can have been hastening he can have been hastening we can have been hastening you can have been hastening they can have been hastening
Negation
Simple form
I can't hasten you can't hasten he can't hasten we can't hasten you can't hasten they can't hasten
V-ing form
I can't be hastening you can't be hastening he can't be hastening we can't be hastening you can't be hastening they can't be hastening
Perfect
I can't have hastened you can't have hastened he can't have hastened we can't have hastened you can't have hastened they can't have hastened
V-ing perfect
I can't have been hastening you can't have been hastening he can't have been hastening we can't have been hastening you can't have been hastening they can't have been hastening
Interrogative form
Simple form
can I hasten? can you hasten? can he hasten? can we hasten? can you hasten? can they hasten?
V-ing form
can I be hastening? can you be hastening? can he be hastening? can we be hastening? can you be hastening? can they be hastening?
Perfect
can I have hastened? can you have hastened? can he have hastened? can we have hastened? can you have hastened? can they have hastened?
V-ing perfect
can I have been hastening? can you have been hastening? can he have been hastening? can we have been hastening? can you have been hastening? can they have been hastening?
Interro-negative form
Simple form
can't I hasten? can't you hasten? can't he hasten? can't we hasten? can't you hasten? can't they hasten?
V-ing form
can't I be hastening? can't you be hastening? can't he be hastening? can't we be hastening? can't you be hastening? can't they be hastening?
Perfect
can't I have hastened? can't you have hastened? can't he have hastened? can't we have hastened? can't you have hastened? can't they have hastened?
V-ing perfect
can't I have been hastening? can't you have been hastening? can't he have been hastening? can't we have been hastening? can't you have been hastening? can't they have been hastening?