I can wonder you can wonder she can wonder we can wonder you can wonder they can wonder
V-ing form
I can be wondering you can be wondering she can be wondering we can be wondering you can be wondering they can be wondering
Perfect
I can have wondered you can have wondered she can have wondered we can have wondered you can have wondered they can have wondered
V-ing perfect
I can have been wondering you can have been wondering she can have been wondering we can have been wondering you can have been wondering they can have been wondering
Negation
Simple form
I cannot wonder you cannot wonder she cannot wonder we cannot wonder you cannot wonder they cannot wonder
V-ing form
I cannot be wondering you cannot be wondering she cannot be wondering we cannot be wondering you cannot be wondering they cannot be wondering
Perfect
I cannot have wondered you cannot have wondered she cannot have wondered we cannot have wondered you cannot have wondered they cannot have wondered
V-ing perfect
I cannot have been wondering you cannot have been wondering she cannot have been wondering we cannot have been wondering you cannot have been wondering they cannot have been wondering
Interrogative form
Simple form
can I wonder? can you wonder? can she wonder? can we wonder? can you wonder? can they wonder?
V-ing form
can I be wondering? can you be wondering? can she be wondering? can we be wondering? can you be wondering? can they be wondering?
Perfect
can I have wondered? can you have wondered? can she have wondered? can we have wondered? can you have wondered? can they have wondered?
V-ing perfect
can I have been wondering? can you have been wondering? can she have been wondering? can we have been wondering? can you have been wondering? can they have been wondering?
Interro-negative form
Simple form
can I not wonder? can you not wonder? can she not wonder? can we not wonder? can you not wonder? can they not wonder?
V-ing form
can I not be wondering? can you not be wondering? can she not be wondering? can we not be wondering? can you not be wondering? can they not be wondering?
Perfect
can I not have wondered? can you not have wondered? can she not have wondered? can we not have wondered? can you not have wondered? can they not have wondered?
V-ing perfect
can I not have been wondering? can you not have been wondering? can she not have been wondering? can we not have been wondering? can you not have been wondering? can they not have been wondering?