I can threat you can threat she can threat we can threat you can threat they can threat
V-ing form
I can be threating you can be threating she can be threating we can be threating you can be threating they can be threating
Perfect
I can have threated you can have threated she can have threated we can have threated you can have threated they can have threated
V-ing perfect
I can have been threating you can have been threating she can have been threating we can have been threating you can have been threating they can have been threating
Negation
Simple form
I cannot threat you cannot threat she cannot threat we cannot threat you cannot threat they cannot threat
V-ing form
I cannot be threating you cannot be threating she cannot be threating we cannot be threating you cannot be threating they cannot be threating
Perfect
I cannot have threated you cannot have threated she cannot have threated we cannot have threated you cannot have threated they cannot have threated
V-ing perfect
I cannot have been threating you cannot have been threating she cannot have been threating we cannot have been threating you cannot have been threating they cannot have been threating
Interrogative form
Simple form
can I threat? can you threat? can she threat? can we threat? can you threat? can they threat?
V-ing form
can I be threating? can you be threating? can she be threating? can we be threating? can you be threating? can they be threating?
Perfect
can I have threated? can you have threated? can she have threated? can we have threated? can you have threated? can they have threated?
V-ing perfect
can I have been threating? can you have been threating? can she have been threating? can we have been threating? can you have been threating? can they have been threating?
Interro-negative form
Simple form
can I not threat? can you not threat? can she not threat? can we not threat? can you not threat? can they not threat?
V-ing form
can I not be threating? can you not be threating? can she not be threating? can we not be threating? can you not be threating? can they not be threating?
Perfect
can I not have threated? can you not have threated? can she not have threated? can we not have threated? can you not have threated? can they not have threated?
V-ing perfect
can I not have been threating? can you not have been threating? can she not have been threating? can we not have been threating? can you not have been threating? can they not have been threating?