I can gradate you can gradate she can gradate we can gradate you can gradate they can gradate
V-ing form
I can be gradating you can be gradating she can be gradating we can be gradating you can be gradating they can be gradating
Perfect
I can have gradated you can have gradated she can have gradated we can have gradated you can have gradated they can have gradated
V-ing perfect
I can have been gradating you can have been gradating she can have been gradating we can have been gradating you can have been gradating they can have been gradating
Negation
Simple form
I can't gradate you can't gradate she can't gradate we can't gradate you can't gradate they can't gradate
V-ing form
I can't be gradating you can't be gradating she can't be gradating we can't be gradating you can't be gradating they can't be gradating
Perfect
I can't have gradated you can't have gradated she can't have gradated we can't have gradated you can't have gradated they can't have gradated
V-ing perfect
I can't have been gradating you can't have been gradating she can't have been gradating we can't have been gradating you can't have been gradating they can't have been gradating
Interrogative form
Simple form
can I gradate? can you gradate? can she gradate? can we gradate? can you gradate? can they gradate?
V-ing form
can I be gradating? can you be gradating? can she be gradating? can we be gradating? can you be gradating? can they be gradating?
Perfect
can I have gradated? can you have gradated? can she have gradated? can we have gradated? can you have gradated? can they have gradated?
V-ing perfect
can I have been gradating? can you have been gradating? can she have been gradating? can we have been gradating? can you have been gradating? can they have been gradating?
Interro-negative form
Simple form
can't I gradate? can't you gradate? can't she gradate? can't we gradate? can't you gradate? can't they gradate?
V-ing form
can't I be gradating? can't you be gradating? can't she be gradating? can't we be gradating? can't you be gradating? can't they be gradating?
Perfect
can't I have gradated? can't you have gradated? can't she have gradated? can't we have gradated? can't you have gradated? can't they have gradated?
V-ing perfect
can't I have been gradating? can't you have been gradating? can't she have been gradating? can't we have been gradating? can't you have been gradating? can't they have been gradating?