
Verbo regular: tough - toughed - toughed
Forma simple | Forma con V-ing | 
| I'll tough you'll tough she'll tough we'll tough you'll tough they'll tough  | I'll be toughing you'll be toughing she'll be toughing we'll be toughing you'll be toughing they'll be toughing  | 
Perfecto | Perfecto con V-ing | 
| I'll have toughed you'll have toughed she'll have toughed we'll have toughed you'll have toughed they'll have toughed  | I'll have been toughing you'll have been toughing she'll have been toughing we'll have been toughing you'll have been toughing they'll have been toughing  | 
Forma simple | Forma con V-ing | 
| I shan't tough you shan't tough she shan't tough we shan't tough you shan't tough they shan't tough  | I shan't be toughing you shan't be toughing she shan't be toughing we shan't be toughing you shan't be toughing they shan't be toughing  | 
Perfecto | Perfecto con V-ing | 
| I shan't have toughed you shan't have toughed she shan't have toughed we shan't have toughed you shan't have toughed they shan't have toughed  | I shan't have been toughing you shan't have been toughing she shan't have been toughing we shan't have been toughing you shan't have been toughing they shan't have been toughing  | 
Forma simple | Forma con V-ing | 
| shall I tough? shall you tough? shall she tough? shall we tough? shall you tough? shall they tough?  | shall I be toughing? shall you be toughing? shall she be toughing? shall we be toughing? shall you be toughing? shall they be toughing?  | 
Perfecto | Perfecto con V-ing | 
| shall I have toughed? shall you have toughed? shall she have toughed? shall we have toughed? shall you have toughed? shall they have toughed?  | shall I have been toughing? shall you have been toughing? shall she have been toughing? shall we have been toughing? shall you have been toughing? shall they have been toughing?  | 
Forma simple | Forma con V-ing | 
| shan't I tough? shan't you tough? shan't she tough? shan't we tough? shan't you tough? shan't they tough?  | shan't I be toughing? shan't you be toughing? shan't she be toughing? shan't we be toughing? shan't you be toughing? shan't they be toughing?  | 
Perfecto | Perfecto con V-ing | 
| shan't I have toughed? shan't you have toughed? shan't she have toughed? shan't we have toughed? shan't you have toughed? shan't they have toughed?  | shan't I have been toughing? shan't you have been toughing? shan't she have been toughing? shan't we have been toughing? shan't you have been toughing? shan't they have been toughing?  |