Regular verb: fasten - fastened - fastened
Simple form | V-ing form |
I may fasten you may fasten he may fasten we may fasten you may fasten they may fasten | I may be fastening you may be fastening he may be fastening we may be fastening you may be fastening they may be fastening |
Perfect | V-ing perfect |
I may have fastened you may have fastened he may have fastened we may have fastened you may have fastened they may have fastened | I may have been fastening you may have been fastening he may have been fastening we may have been fastening you may have been fastening they may have been fastening |
Simple form | V-ing form |
I may not fasten you may not fasten he may not fasten we may not fasten you may not fasten they may not fasten | I may not be fastening you may not be fastening he may not be fastening we may not be fastening you may not be fastening they may not be fastening |
Perfect | V-ing perfect |
I may not have fastened you may not have fastened he may not have fastened we may not have fastened you may not have fastened they may not have fastened | I may not have been fastening you may not have been fastening he may not have been fastening we may not have been fastening you may not have been fastening they may not have been fastening |
Simple form | V-ing form |
may I fasten? may you fasten? may he fasten? may we fasten? may you fasten? may they fasten? | may I be fastening? may you be fastening? may he be fastening? may we be fastening? may you be fastening? may they be fastening? |
Perfect | V-ing perfect |
may I have fastened? may you have fastened? may he have fastened? may we have fastened? may you have fastened? may they have fastened? | may I have been fastening? may you have been fastening? may he have been fastening? may we have been fastening? may you have been fastening? may they have been fastening? |
Simple form | V-ing form |
may I not fasten? may you not fasten? may he not fasten? may we not fasten? may you not fasten? may they not fasten? | may I not be fastening? may you not be fastening? may he not be fastening? may we not be fastening? may you not be fastening? may they not be fastening? |
Perfect | V-ing perfect |
may I not have fastened? may you not have fastened? may he not have fastened? may we not have fastened? may you not have fastened? may they not have fastened? | may I not have been fastening? may you not have been fastening? may he not have been fastening? may we not have been fastening? may you not have been fastening? may they not have been fastening? |