can join
Verbo regular: join - joined- joined

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can join
you can join
she can join
we can join
you can join
they can join 	I can be joining
you can be joining
she can be joining
we can be joining
you can be joining
they can be joining	I can have joined
you can have joined
she can have joined
we can have joined
you can have joined
they can have joined	I can have been joining
you can have been joining
she can have been joining
we can have been joining
you can have been joining
they can have been joining	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot join
you cannot join
she cannot join
we cannot join
you cannot join
they cannot join 	I cannot be joining
you cannot be joining
she cannot be joining
we cannot be joining
you cannot be joining
they cannot be joining	I cannot have joined
you cannot have joined
she cannot have joined
we cannot have joined
you cannot have joined
they cannot have joined	I cannot have been joining
you cannot have been joining
she cannot have been joining
we cannot have been joining
you cannot have been joining
they cannot have been joining	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I join?
can you join?
can she join?
can we join?
can you join?
can they join? 	can I be joining?
can you be joining?
can she be joining?
can we be joining?
can you be joining?
can they be joining? 	can I have joined?
can you have joined?
can she have joined?
can we have joined?
can you have joined?
can they have joined? 	can I have been joining?
can you have been joining?
can she have been joining?
can we have been joining?
can you have been joining?
can they have been joining? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not join?
can you not join?
can she not join?
can we not join?
can you not join?
can they not join? 	can I not be joining?
can you not be joining?
can she not be joining?
can we not be joining?
can you not be joining?
can they not be joining? 	can I not have joined?
can you not have joined?
can she not have joined?
can we not have joined?
can you not have joined?
can they not have joined? 	can I not have been joining?
can you not have been joining?
can she not have been joining?
can we not have been joining?
can you not have been joining?
can they not have been joining?