
Verbo regular: rain - rained - rained
| Forma simple | Forma con V-ing | 
| - - it may rain - - - | - - it may be raining - - - | 
| Perfecto | Perfecto con V-ing | 
| - - it may have rained - - - | - - it may have been raining - - - | 
| Forma simple | Forma con V-ing | 
| - - it may not rain - - - | - - it may not be raining - - - | 
| Perfecto | Perfecto con V-ing | 
| - - it may not have rained - - - | - - it may not have been raining - - - | 
| Forma simple | Forma con V-ing | 
| - - may it rain? - - - | - - may it be raining? - - - | 
| Perfecto | Perfecto con V-ing | 
| - - may it have rained? - - - | - - may it have been raining? - - - | 
| Forma simple | Forma con V-ing | 
| - - may it not rain? - - - | - - may it not be raining? - - - | 
| Perfecto | Perfecto con V-ing | 
| - - may it not have rained? - - - | - - may it not have been raining? - - - |