I can gatecrash you can gatecrash he can gatecrash we can gatecrash you can gatecrash they can gatecrash
V-ing form
I can be gatecrashing you can be gatecrashing he can be gatecrashing we can be gatecrashing you can be gatecrashing they can be gatecrashing
Perfect
I can have gatecrashed you can have gatecrashed he can have gatecrashed we can have gatecrashed you can have gatecrashed they can have gatecrashed
V-ing perfect
I can have been gatecrashing you can have been gatecrashing he can have been gatecrashing we can have been gatecrashing you can have been gatecrashing they can have been gatecrashing
Negation
Simple form
I can't gatecrash you can't gatecrash he can't gatecrash we can't gatecrash you can't gatecrash they can't gatecrash
V-ing form
I can't be gatecrashing you can't be gatecrashing he can't be gatecrashing we can't be gatecrashing you can't be gatecrashing they can't be gatecrashing
Perfect
I can't have gatecrashed you can't have gatecrashed he can't have gatecrashed we can't have gatecrashed you can't have gatecrashed they can't have gatecrashed
V-ing perfect
I can't have been gatecrashing you can't have been gatecrashing he can't have been gatecrashing we can't have been gatecrashing you can't have been gatecrashing they can't have been gatecrashing
Interrogative form
Simple form
can I gatecrash? can you gatecrash? can he gatecrash? can we gatecrash? can you gatecrash? can they gatecrash?
V-ing form
can I be gatecrashing? can you be gatecrashing? can he be gatecrashing? can we be gatecrashing? can you be gatecrashing? can they be gatecrashing?
Perfect
can I have gatecrashed? can you have gatecrashed? can he have gatecrashed? can we have gatecrashed? can you have gatecrashed? can they have gatecrashed?
V-ing perfect
can I have been gatecrashing? can you have been gatecrashing? can he have been gatecrashing? can we have been gatecrashing? can you have been gatecrashing? can they have been gatecrashing?
Interro-negative form
Simple form
can't I gatecrash? can't you gatecrash? can't he gatecrash? can't we gatecrash? can't you gatecrash? can't they gatecrash?
V-ing form
can't I be gatecrashing? can't you be gatecrashing? can't he be gatecrashing? can't we be gatecrashing? can't you be gatecrashing? can't they be gatecrashing?
Perfect
can't I have gatecrashed? can't you have gatecrashed? can't he have gatecrashed? can't we have gatecrashed? can't you have gatecrashed? can't they have gatecrashed?
V-ing perfect
can't I have been gatecrashing? can't you have been gatecrashing? can't he have been gatecrashing? can't we have been gatecrashing? can't you have been gatecrashing? can't they have been gatecrashing?