English verb conjugation
CAN SWEETEN

Regular verb: sweeten - sweetened - sweetened

Affirmation

Simple form	V-ing form
I can sweeten you can sweeten he can sweeten we can sweeten you can sweeten they can sweeten	I can be sweetening you can be sweetening he can be sweetening we can be sweetening you can be sweetening they can be sweetening
Perfect	V-ing perfect
I can have sweetened you can have sweetened he can have sweetened we can have sweetened you can have sweetened they can have sweetened	I can have been sweetening you can have been sweetening he can have been sweetening we can have been sweetening you can have been sweetening they can have been sweetening

Negation

Simple form	V-ing form
I cannot sweeten you cannot sweeten he cannot sweeten we cannot sweeten you cannot sweeten they cannot sweeten	I cannot be sweetening you cannot be sweetening he cannot be sweetening we cannot be sweetening you cannot be sweetening they cannot be sweetening
Perfect	V-ing perfect
I cannot have sweetened you cannot have sweetened he cannot have sweetened we cannot have sweetened you cannot have sweetened they cannot have sweetened	I cannot have been sweetening you cannot have been sweetening he cannot have been sweetening we cannot have been sweetening you cannot have been sweetening they cannot have been sweetening

Interrogative form

Simple form	V-ing form
can I sweeten? can you sweeten? can he sweeten? can we sweeten? can you sweeten? can they sweeten?	can I be sweetening? can you be sweetening? can he be sweetening? can we be sweetening? can you be sweetening? can they be sweetening?
Perfect	V-ing perfect
can I have sweetened? can you have sweetened? can he have sweetened? can we have sweetened? can you have sweetened? can they have sweetened?	can I have been sweetening? can you have been sweetening? can he have been sweetening? can we have been sweetening? can you have been sweetening? can they have been sweetening?

Interro-negative form

Simple form	V-ing form
can I not sweeten? can you not sweeten? can he not sweeten? can we not sweeten? can you not sweeten? can they not sweeten?	can I not be sweetening? can you not be sweetening? can he not be sweetening? can we not be sweetening? can you not be sweetening? can they not be sweetening?
Perfect	V-ing perfect
can I not have sweetened? can you not have sweetened? can he not have sweetened? can we not have sweetened? can you not have sweetened? can they not have sweetened?	can I not have been sweetening? can you not have been sweetening? can he not have been sweetening? can we not have been sweetening? can you not have been sweetening? can they not have been sweetening?