I can impress you can impress she can impress we can impress you can impress they can impress
V-ing form
I can be impressing you can be impressing she can be impressing we can be impressing you can be impressing they can be impressing
Perfect
I can have impressed you can have impressed she can have impressed we can have impressed you can have impressed they can have impressed
V-ing perfect
I can have been impressing you can have been impressing she can have been impressing we can have been impressing you can have been impressing they can have been impressing
Negation
Simple form
I cannot impress you cannot impress she cannot impress we cannot impress you cannot impress they cannot impress
V-ing form
I cannot be impressing you cannot be impressing she cannot be impressing we cannot be impressing you cannot be impressing they cannot be impressing
Perfect
I cannot have impressed you cannot have impressed she cannot have impressed we cannot have impressed you cannot have impressed they cannot have impressed
V-ing perfect
I cannot have been impressing you cannot have been impressing she cannot have been impressing we cannot have been impressing you cannot have been impressing they cannot have been impressing
Interrogative form
Simple form
can I impress? can you impress? can she impress? can we impress? can you impress? can they impress?
V-ing form
can I be impressing? can you be impressing? can she be impressing? can we be impressing? can you be impressing? can they be impressing?
Perfect
can I have impressed? can you have impressed? can she have impressed? can we have impressed? can you have impressed? can they have impressed?
V-ing perfect
can I have been impressing? can you have been impressing? can she have been impressing? can we have been impressing? can you have been impressing? can they have been impressing?
Interro-negative form
Simple form
can I not impress? can you not impress? can she not impress? can we not impress? can you not impress? can they not impress?
V-ing form
can I not be impressing? can you not be impressing? can she not be impressing? can we not be impressing? can you not be impressing? can they not be impressing?
Perfect
can I not have impressed? can you not have impressed? can she not have impressed? can we not have impressed? can you not have impressed? can they not have impressed?
V-ing perfect
can I not have been impressing? can you not have been impressing? can she not have been impressing? can we not have been impressing? can you not have been impressing? can they not have been impressing?