I can connect you can connect she can connect we can connect you can connect they can connect
V-ing form
I can be connecting you can be connecting she can be connecting we can be connecting you can be connecting they can be connecting
Perfect
I can have connected you can have connected she can have connected we can have connected you can have connected they can have connected
V-ing perfect
I can have been connecting you can have been connecting she can have been connecting we can have been connecting you can have been connecting they can have been connecting
Negation
Simple form
I can't connect you can't connect she can't connect we can't connect you can't connect they can't connect
V-ing form
I can't be connecting you can't be connecting she can't be connecting we can't be connecting you can't be connecting they can't be connecting
Perfect
I can't have connected you can't have connected she can't have connected we can't have connected you can't have connected they can't have connected
V-ing perfect
I can't have been connecting you can't have been connecting she can't have been connecting we can't have been connecting you can't have been connecting they can't have been connecting
Interrogative form
Simple form
can I connect? can you connect? can she connect? can we connect? can you connect? can they connect?
V-ing form
can I be connecting? can you be connecting? can she be connecting? can we be connecting? can you be connecting? can they be connecting?
Perfect
can I have connected? can you have connected? can she have connected? can we have connected? can you have connected? can they have connected?
V-ing perfect
can I have been connecting? can you have been connecting? can she have been connecting? can we have been connecting? can you have been connecting? can they have been connecting?
Interro-negative form
Simple form
can't I connect? can't you connect? can't she connect? can't we connect? can't you connect? can't they connect?
V-ing form
can't I be connecting? can't you be connecting? can't she be connecting? can't we be connecting? can't you be connecting? can't they be connecting?
Perfect
can't I have connected? can't you have connected? can't she have connected? can't we have connected? can't you have connected? can't they have connected?
V-ing perfect
can't I have been connecting? can't you have been connecting? can't she have been connecting? can't we have been connecting? can't you have been connecting? can't they have been connecting?