Regular verb: operate - operated - operated
Simple form | V-ing form |
I could operate you could operate she could operate we could operate you could operate they could operate | I could be operating you could be operating she could be operating we could be operating you could be operating they could be operating |
Perfect | V-ing perfect |
I could have operated you could have operated she could have operated we could have operated you could have operated they could have operated | I could have been operating you could have been operating she could have been operating we could have been operating you could have been operating they could have been operating |
Simple form | V-ing form |
I couldn't operate you couldn't operate she couldn't operate we couldn't operate you couldn't operate they couldn't operate | I couldn't be operating you couldn't be operating she couldn't be operating we couldn't be operating you couldn't be operating they couldn't be operating |
Perfect | V-ing perfect |
I couldn't have operated you couldn't have operated she couldn't have operated we couldn't have operated you couldn't have operated they couldn't have operated | I couldn't have been operating you couldn't have been operating she couldn't have been operating we couldn't have been operating you couldn't have been operating they couldn't have been operating |
Simple form | V-ing form |
could I operate? could you operate? could she operate? could we operate? could you operate? could they operate? | could I be operating? could you be operating? could she be operating? could we be operating? could you be operating? could they be operating? |
Perfect | V-ing perfect |
could I have operated? could you have operated? could she have operated? could we have operated? could you have operated? could they have operated? | could I have been operating? could you have been operating? could she have been operating? could we have been operating? could you have been operating? could they have been operating? |
Simple form | V-ing form |
couldn't I operate? couldn't you operate? couldn't she operate? couldn't we operate? couldn't you operate? couldn't they operate? | couldn't I be operating? couldn't you be operating? couldn't she be operating? couldn't we be operating? couldn't you be operating? couldn't they be operating? |
Perfect | V-ing perfect |
couldn't I have operated? couldn't you have operated? couldn't she have operated? couldn't we have operated? couldn't you have operated? couldn't they have operated? | couldn't I have been operating? couldn't you have been operating? couldn't she have been operating? couldn't we have been operating? couldn't you have been operating? couldn't they have been operating? |