Regular verb: sweeten - sweetened - sweetened
Simple form | V-ing form |
I must sweeten you must sweeten she must sweeten we must sweeten you must sweeten they must sweeten | I must be sweetening you must be sweetening she must be sweetening we must be sweetening you must be sweetening they must be sweetening |
Perfect | V-ing perfect |
I must have sweetened you must have sweetened she must have sweetened we must have sweetened you must have sweetened they must have sweetened | I must have been sweetening you must have been sweetening she must have been sweetening we must have been sweetening you must have been sweetening they must have been sweetening |
Simple form | V-ing form |
I must not sweeten you must not sweeten she must not sweeten we must not sweeten you must not sweeten they must not sweeten | I must not be sweetening you must not be sweetening she must not be sweetening we must not be sweetening you must not be sweetening they must not be sweetening |
Perfect | V-ing perfect |
I must not have sweetened you must not have sweetened she must not have sweetened we must not have sweetened you must not have sweetened they must not have sweetened | I must not have been sweetening you must not have been sweetening she must not have been sweetening we must not have been sweetening you must not have been sweetening they must not have been sweetening |
Simple form | V-ing form |
must I sweeten? must you sweeten? must she sweeten? must we sweeten? must you sweeten? must they sweeten? | must I be sweetening? must you be sweetening? must she be sweetening? must we be sweetening? must you be sweetening? must they be sweetening? |
Perfect | V-ing perfect |
must I have sweetened? must you have sweetened? must she have sweetened? must we have sweetened? must you have sweetened? must they have sweetened? | must I have been sweetening? must you have been sweetening? must she have been sweetening? must we have been sweetening? must you have been sweetening? must they have been sweetening? |
Simple form | V-ing form |
must I not sweeten? must you not sweeten? must she not sweeten? must we not sweeten? must you not sweeten? must they not sweeten? | must I not be sweetening? must you not be sweetening? must she not be sweetening? must we not be sweetening? must you not be sweetening? must they not be sweetening? |
Perfect | V-ing perfect |
must I not have sweetened? must you not have sweetened? must she not have sweetened? must we not have sweetened? must you not have sweetened? must they not have sweetened? | must I not have been sweetening? must you not have been sweetening? must she not have been sweetening? must we not have been sweetening? must you not have been sweetening? must they not have been sweetening? |