Regular verb: weaken - weakened - weakened
Simple form | V-ing form |
I can weaken you can weaken he can weaken we can weaken you can weaken they can weaken | I can be weakening you can be weakening he can be weakening we can be weakening you can be weakening they can be weakening |
Perfect | V-ing perfect |
I can have weakened you can have weakened he can have weakened we can have weakened you can have weakened they can have weakened | I can have been weakening you can have been weakening he can have been weakening we can have been weakening you can have been weakening they can have been weakening |
Simple form | V-ing form |
I cannot weaken you cannot weaken he cannot weaken we cannot weaken you cannot weaken they cannot weaken | I cannot be weakening you cannot be weakening he cannot be weakening we cannot be weakening you cannot be weakening they cannot be weakening |
Perfect | V-ing perfect |
I cannot have weakened you cannot have weakened he cannot have weakened we cannot have weakened you cannot have weakened they cannot have weakened | I cannot have been weakening you cannot have been weakening he cannot have been weakening we cannot have been weakening you cannot have been weakening they cannot have been weakening |
Simple form | V-ing form |
can I weaken? can you weaken? can he weaken? can we weaken? can you weaken? can they weaken? | can I be weakening? can you be weakening? can he be weakening? can we be weakening? can you be weakening? can they be weakening? |
Perfect | V-ing perfect |
can I have weakened? can you have weakened? can he have weakened? can we have weakened? can you have weakened? can they have weakened? | can I have been weakening? can you have been weakening? can he have been weakening? can we have been weakening? can you have been weakening? can they have been weakening? |
Simple form | V-ing form |
can I not weaken? can you not weaken? can he not weaken? can we not weaken? can you not weaken? can they not weaken? | can I not be weakening? can you not be weakening? can he not be weakening? can we not be weakening? can you not be weakening? can they not be weakening? |
Perfect | V-ing perfect |
can I not have weakened? can you not have weakened? can he not have weakened? can we not have weakened? can you not have weakened? can they not have weakened? | can I not have been weakening? can you not have been weakening? can he not have been weakening? can we not have been weakening? can you not have been weakening? can they not have been weakening? |