
Verbo regular: seem - seemed - seemed
Forma simple | Forma com V-ing | 
| - - it ought to seem - - -  | - - it ought to be seeming - - -  | 
Perfeito | Perfeito com V-ing | 
| - - it ought to have seemed - - -  | - - it ought to have been seeming - - -  | 
Forma simple | Forma com V-ing | 
| - - it ought not to seem - - -  | - - it ought not to seeming - - -  | 
Perfeito | Perfeito com V-ing | 
| - - it ought not to have seemed - - -  | - - it ought not to have been seeming - - -  | 
Forma simple | Forma com V-ing | 
| - - ought to it seem? - - -  | - - ought to it be seeming? - - -  | 
Perfeito | Perfeito com V-ing | 
| - - ought to it have seemed? - - -  | - - ought to it have been seeming? - - -  | 
Forma simple | Forma com V-ing | 
| - - ought it not to seem? - - -  | - - ought it not to be seeming? - - -  | 
Perfeito | Perfeito com V-ing | 
| - - ought it not to have seemed? - - -  | - - ought it not to have been seeming? - - -  |