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