I may sweeten you may sweeten she may sweeten we may sweeten you may sweeten they may sweeten
V-ing form
I may be sweetening you may be sweetening she may be sweetening we may be sweetening you may be sweetening they may be sweetening
Perfect
I may have sweetened you may have sweetened she may have sweetened we may have sweetened you may have sweetened they may have sweetened
V-ing perfect
I may have been sweetening you may have been sweetening she may have been sweetening we may have been sweetening you may have been sweetening they may have been sweetening
Negation
Simple form
I may not sweeten you may not sweeten she may not sweeten we may not sweeten you may not sweeten they may not sweeten
V-ing form
I may not be sweetening you may not be sweetening she may not be sweetening we may not be sweetening you may not be sweetening they may not be sweetening
Perfect
I may not have sweetened you may not have sweetened she may not have sweetened we may not have sweetened you may not have sweetened they may not have sweetened
V-ing perfect
I may not have been sweetening you may not have been sweetening she may not have been sweetening we may not have been sweetening you may not have been sweetening they may not have been sweetening
Interrogative form
Simple form
may I sweeten? may you sweeten? may she sweeten? may we sweeten? may you sweeten? may they sweeten?
V-ing form
may I be sweetening? may you be sweetening? may she be sweetening? may we be sweetening? may you be sweetening? may they be sweetening?
Perfect
may I have sweetened? may you have sweetened? may she have sweetened? may we have sweetened? may you have sweetened? may they have sweetened?
V-ing perfect
may I have been sweetening? may you have been sweetening? may she have been sweetening? may we have been sweetening? may you have been sweetening? may they have been sweetening?
Interro-negative form
Simple form
may I not sweeten? may you not sweeten? may she not sweeten? may we not sweeten? may you not sweeten? may they not sweeten?
V-ing form
may I not be sweetening? may you not be sweetening? may she not be sweetening? may we not be sweetening? may you not be sweetening? may they not be sweetening?
Perfect
may I not have sweetened? may you not have sweetened? may she not have sweetened? may we not have sweetened? may you not have sweetened? may they not have sweetened?
V-ing perfect
may I not have been sweetening? may you not have been sweetening? may she not have been sweetening? may we not have been sweetening? may you not have been sweetening? may they not have been sweetening?