Verbo regular: strengthen - strengthened - strengthened
Forma simple | Forma con V-ing |
I could strengthen you could strengthen he could strengthen we could strengthen you could strengthen they could strengthen | I could be strengthening you could be strengthening he could be strengthening we could be strengthening you could be strengthening they could be strengthening |
Perfecto | Perfecto con V-ing |
I could have strengthened you could have strengthened he could have strengthened we could have strengthened you could have strengthened they could have strengthened | I could have been strengthening you could have been strengthening he could have been strengthening we could have been strengthening you could have been strengthening they could have been strengthening |
Forma simple | Forma con V-ing |
I couldn't strengthen you couldn't strengthen he couldn't strengthen we couldn't strengthen you couldn't strengthen they couldn't strengthen | I couldn't be strengthening you couldn't be strengthening he couldn't be strengthening we couldn't be strengthening you couldn't be strengthening they couldn't be strengthening |
Perfecto | Perfecto con V-ing |
I couldn't have strengthened you couldn't have strengthened he couldn't have strengthened we couldn't have strengthened you couldn't have strengthened they couldn't have strengthened | I couldn't have been strengthening you couldn't have been strengthening he couldn't have been strengthening we couldn't have been strengthening you couldn't have been strengthening they couldn't have been strengthening |
Forma simple | Forma con V-ing |
could I strengthen? could you strengthen? could he strengthen? could we strengthen? could you strengthen? could they strengthen? | could I be strengthening? could you be strengthening? could he be strengthening? could we be strengthening? could you be strengthening? could they be strengthening? |
Perfecto | Perfecto con V-ing |
could I have strengthened? could you have strengthened? could he have strengthened? could we have strengthened? could you have strengthened? could they have strengthened? | could I have been strengthening? could you have been strengthening? could he have been strengthening? could we have been strengthening? could you have been strengthening? could they have been strengthening? |
Forma simple | Forma con V-ing |
couldn't I strengthen? couldn't you strengthen? couldn't he strengthen? couldn't we strengthen? couldn't you strengthen? couldn't they strengthen? | couldn't I be strengthening? couldn't you be strengthening? couldn't he be strengthening? couldn't we be strengthening? couldn't you be strengthening? couldn't they be strengthening? |
Perfecto | Perfecto con V-ing |
couldn't I have strengthened? couldn't you have strengthened? couldn't he have strengthened? couldn't we have strengthened? couldn't you have strengthened? couldn't they have strengthened? | couldn't I have been strengthening? couldn't you have been strengthening? couldn't he have been strengthening? couldn't we have been strengthening? couldn't you have been strengthening? couldn't they have been strengthening? |