I can grade you can grade he can grade we can grade you can grade they can grade
Forme en V-ing
I can be grading you can be grading he can be grading we can be grading you can be grading they can be grading
Perfect
I can have graded you can have graded he can have graded we can have graded you can have graded they can have graded
Perfect en V-ing
I can have been grading you can have been grading he can have been grading we can have been grading you can have been grading they can have been grading
Négation
Forme simple
I can't grade you can't grade he can't grade we can't grade you can't grade they can't grade
Forme en V-ing
I can't be grading you can't be grading he can't be grading we can't be grading you can't be grading they can't be grading
Perfect
I can't have graded you can't have graded he can't have graded we can't have graded you can't have graded they can't have graded
Perfect en V-ing
I can't have been grading you can't have been grading he can't have been grading we can't have been grading you can't have been grading they can't have been grading
Forme interrogative
Forme simple
can I grade? can you grade? can he grade? can we grade? can you grade? can they grade?
Forme en V-ing
can I be grading? can you be grading? can he be grading? can we be grading? can you be grading? can they be grading?
Perfect
can I have graded? can you have graded? can he have graded? can we have graded? can you have graded? can they have graded?
Perfect en V-ing
can I have been grading? can you have been grading? can he have been grading? can we have been grading? can you have been grading? can they have been grading?
Forme interro-négative
Forme simple
can't I grade? can't you grade? can't he grade? can't we grade? can't you grade? can't they grade?
Forme en V-ing
can't I be grading? can't you be grading? can't he be grading? can't we be grading? can't you be grading? can't they be grading?
Perfect
can't I have graded? can't you have graded? can't he have graded? can't we have graded? can't you have graded? can't they have graded?
Perfect en V-ing
can't I have been grading? can't you have been grading? can't he have been grading? can't we have been grading? can't you have been grading? can't they have been grading?