Regular verb: add - added - added
Simple form | V-ing form |
I could add you could add he could add we could add you could add they could add | I could be adding you could be adding he could be adding we could be adding you could be adding they could be adding |
Perfect | V-ing perfect |
I could have added you could have added he could have added we could have added you could have added they could have added | I could have been adding you could have been adding he could have been adding we could have been adding you could have been adding they could have been adding |
Simple form | V-ing form |
I couldn't add you couldn't add he couldn't add we couldn't add you couldn't add they couldn't add | I couldn't be adding you couldn't be adding he couldn't be adding we couldn't be adding you couldn't be adding they couldn't be adding |
Perfect | V-ing perfect |
I couldn't have added you couldn't have added he couldn't have added we couldn't have added you couldn't have added they couldn't have added | I couldn't have been adding you couldn't have been adding he couldn't have been adding we couldn't have been adding you couldn't have been adding they couldn't have been adding |
Simple form | V-ing form |
could I add? could you add? could he add? could we add? could you add? could they add? | could I be adding? could you be adding? could he be adding? could we be adding? could you be adding? could they be adding? |
Perfect | V-ing perfect |
could I have added? could you have added? could he have added? could we have added? could you have added? could they have added? | could I have been adding? could you have been adding? could he have been adding? could we have been adding? could you have been adding? could they have been adding? |
Simple form | V-ing form |
couldn't I add? couldn't you add? couldn't he add? couldn't we add? couldn't you add? couldn't they add? | couldn't I be adding? couldn't you be adding? couldn't he be adding? couldn't we be adding? couldn't you be adding? couldn't they be adding? |
Perfect | V-ing perfect |
couldn't I have added? couldn't you have added? couldn't he have added? couldn't we have added? couldn't you have added? couldn't they have added? | couldn't I have been adding? couldn't you have been adding? couldn't he have been adding? couldn't we have been adding? couldn't you have been adding? couldn't they have been adding? |