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