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