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