I can dream you can dream she can dream we can dream you can dream they can dream
V-ing form
I can be dreaming you can be dreaming she can be dreaming we can be dreaming you can be dreaming they can be dreaming
Perfect
I can have dreamed, dreamt you can have dreamed, dreamt she can have dreamed, dreamt we can have dreamed, dreamt you can have dreamed, dreamt they can have dreamed, dreamt
V-ing perfect
I can have been dreaming you can have been dreaming she can have been dreaming we can have been dreaming you can have been dreaming they can have been dreaming
Negation
Simple form
I cannot dream you cannot dream she cannot dream we cannot dream you cannot dream they cannot dream
V-ing form
I cannot be dreaming you cannot be dreaming she cannot be dreaming we cannot be dreaming you cannot be dreaming they cannot be dreaming
Perfect
I cannot have dreamed, dreamt you cannot have dreamed, dreamt she cannot have dreamed, dreamt we cannot have dreamed, dreamt you cannot have dreamed, dreamt they cannot have dreamed, dreamt
V-ing perfect
I cannot have been dreaming you cannot have been dreaming she cannot have been dreaming we cannot have been dreaming you cannot have been dreaming they cannot have been dreaming
Interrogative form
Simple form
can I dream? can you dream? can she dream? can we dream? can you dream? can they dream?
V-ing form
can I be dreaming? can you be dreaming? can she be dreaming? can we be dreaming? can you be dreaming? can they be dreaming?
Perfect
can I have dreamed, dreamt? can you have dreamed, dreamt? can she have dreamed, dreamt? can we have dreamed, dreamt? can you have dreamed, dreamt? can they have dreamed, dreamt?
V-ing perfect
can I have been dreaming? can you have been dreaming? can she have been dreaming? can we have been dreaming? can you have been dreaming? can they have been dreaming?
Interro-negative form
Simple form
can I not dream? can you not dream? can she not dream? can we not dream? can you not dream? can they not dream?
V-ing form
can I not be dreaming? can you not be dreaming? can she not be dreaming? can we not be dreaming? can you not be dreaming? can they not be dreaming?
Perfect
can I not have dreamed, dreamt? can you not have dreamed, dreamt? can she not have dreamed, dreamt? can we not have dreamed, dreamt? can you not have dreamed, dreamt? can they not have dreamed, dreamt?
V-ing perfect
can I not have been dreaming? can you not have been dreaming? can she not have been dreaming? can we not have been dreaming? can you not have been dreaming? can they not have been dreaming?