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