can back
Regelmä&szlig;iges Verb: back - backed- backed

Bestätigung 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I can back
you can back
he can back
we can back
you can back
they can back 	I can be backing
you can be backing
he can be backing
we can be backing
you can be backing
they can be backing	I can have backed
you can have backed
he can have backed
we can have backed
you can have backed
they can have backed	I can have been backing
you can have been backing
he can have been backing
we can have been backing
you can have been backing
they can have been backing	

Negation 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
I cannot back
you cannot back
he cannot back
we cannot back
you cannot back
they cannot back 	I cannot be backing
you cannot be backing
he cannot be backing
we cannot be backing
you cannot be backing
they cannot be backing	I cannot have backed
you cannot have backed
he cannot have backed
we cannot have backed
you cannot have backed
they cannot have backed	I cannot have been backing
you cannot have been backing
he cannot have been backing
we cannot have been backing
you cannot have been backing
they cannot have been backing	

Fragende Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
can I back?
can you back?
can he back?
can we back?
can you back?
can they back? 	can I be backing?
can you be backing?
can he be backing?
can we be backing?
can you be backing?
can they be backing? 	can I have backed?
can you have backed?
can he have backed?
can we have backed?
can you have backed?
can they have backed? 	can I have been backing?
can you have been backing?
can he have been backing?
can we have been backing?
can you have been backing?
can they have been backing? 	

Fragende Negation Form 	
Einfache Form 	Form mit V-ing 	Perfekt 	Perfekt mit V-ing 	
can I not back?
can you not back?
can he not back?
can we not back?
can you not back?
can they not back? 	can I not be backing?
can you not be backing?
can he not be backing?
can we not be backing?
can you not be backing?
can they not be backing? 	can I not have backed?
can you not have backed?
can he not have backed?
can we not have backed?
can you not have backed?
can they not have backed? 	can I not have been backing?
can you not have been backing?
can he not have been backing?
can we not have been backing?
can you not have been backing?
can they not have been backing?