
Verbo regular: sum - summed - summed
| Presente | Presente contínuo | Pretérito | Preterito contínuo | 
| I sum you sum he sums we sum you sum they sum | I am summing you are summing he is summing we are summing you are summing they are summing | I summed you summed he summed we summed you summed they summed | I was summing you were summing he was summing we were summing you were summing they were summing | 
| Presente perfeito | Presente perfeito contínuo | Mais perfeito | Contínuo mais perfeito | 
| I have summed you have summed he has summed we have summed you have summed they have summed | I have been summing you have been summing he has been summing we have been summing you have been summing they have been summing | I had summed you had summed he had summed we had summed you had summed they had summed | I had been summing you had been summing he had been summing we had been summing you had been summing they had been summing | 
| Futuro | Futuro contínuo | futuro perfeito | futuro perfeito contínuo | 
| I will sum you will sum he will sum we will sum you will sum they will sum | I will be summing you will be summing he will be summing we will be summing you will be summing they will be summing | I will have summed you will have summed he will have summed we will have summed you will have summed they will have summed | I will have been summing you will have been summing he will have been summing we will have been summing you will have been summing they will have been summing | 
| Presente | Presente contínuo | Passado | Passado contínuo | 
| I would sum you would sum he would sum we would sum you would sum they would sum | I would be summing you would be summing he would be summing we would be summing you would be summing they would be summing | I would have summed you would have summed he would have summed we would have summed you would have summed they would have summed | I would have been summing you would have been summing he would have been summing we would have been summing you would have been summing they would have been summing | 
| Infinitivo | Imperativo | 
| Infinitivo | Imperativo | ||
| to sum | sum Let's sum sum | 
| Presente | Passado | ||
| summing | summed |