I can date you can date he can date we can date you can date they can date
V-ing form
I can be dating you can be dating he can be dating we can be dating you can be dating they can be dating
Perfect
I can have dated you can have dated he can have dated we can have dated you can have dated they can have dated
V-ing perfect
I can have been dating you can have been dating he can have been dating we can have been dating you can have been dating they can have been dating
Negation
Simple form
I cannot date you cannot date he cannot date we cannot date you cannot date they cannot date
V-ing form
I cannot be dating you cannot be dating he cannot be dating we cannot be dating you cannot be dating they cannot be dating
Perfect
I cannot have dated you cannot have dated he cannot have dated we cannot have dated you cannot have dated they cannot have dated
V-ing perfect
I cannot have been dating you cannot have been dating he cannot have been dating we cannot have been dating you cannot have been dating they cannot have been dating
Interrogative form
Simple form
can I date? can you date? can he date? can we date? can you date? can they date?
V-ing form
can I be dating? can you be dating? can he be dating? can we be dating? can you be dating? can they be dating?
Perfect
can I have dated? can you have dated? can he have dated? can we have dated? can you have dated? can they have dated?
V-ing perfect
can I have been dating? can you have been dating? can he have been dating? can we have been dating? can you have been dating? can they have been dating?
Interro-negative form
Simple form
can I not date? can you not date? can he not date? can we not date? can you not date? can they not date?
V-ing form
can I not be dating? can you not be dating? can he not be dating? can we not be dating? can you not be dating? can they not be dating?
Perfect
can I not have dated? can you not have dated? can he not have dated? can we not have dated? can you not have dated? can they not have dated?
V-ing perfect
can I not have been dating? can you not have been dating? can he not have been dating? can we not have been dating? can you not have been dating? can they not have been dating?