can weld
Regular verb: weld - welded- welded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can weld
you can weld
he can weld
we can weld
you can weld
they can weld 	I can be welding
you can be welding
he can be welding
we can be welding
you can be welding
they can be welding	I can have welded
you can have welded
he can have welded
we can have welded
you can have welded
they can have welded	I can have been welding
you can have been welding
he can have been welding
we can have been welding
you can have been welding
they can have been welding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't weld
you can't weld
he can't weld
we can't weld
you can't weld
they can't weld 	I can't be welding
you can't be welding
he can't be welding
we can't be welding
you can't be welding
they can't be welding	I can't have welded
you can't have welded
he can't have welded
we can't have welded
you can't have welded
they can't have welded	I can't have been welding
you can't have been welding
he can't have been welding
we can't have been welding
you can't have been welding
they can't have been welding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I weld?
can you weld?
can he weld?
can we weld?
can you weld?
can they weld? 	can I be welding?
can you be welding?
can he be welding?
can we be welding?
can you be welding?
can they be welding? 	can I have welded?
can you have welded?
can he have welded?
can we have welded?
can you have welded?
can they have welded? 	can I have been welding?
can you have been welding?
can he have been welding?
can we have been welding?
can you have been welding?
can they have been welding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I weld?
can't you weld?
can't he weld?
can't we weld?
can't you weld?
can't they weld? 	can't I be welding?
can't you be welding?
can't he be welding?
can't we be welding?
can't you be welding?
can't they be welding? 	can't I have welded?
can't you have welded?
can't he have welded?
can't we have welded?
can't you have welded?
can't they have welded? 	can't I have been welding?
can't you have been welding?
can't he have been welding?
can't we have been welding?
can't you have been welding?
can't they have been welding?