can shield
Regular verb: shield - shielded- shielded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can shield
you can shield
she can shield
we can shield
you can shield
they can shield 	I can be shielding
you can be shielding
she can be shielding
we can be shielding
you can be shielding
they can be shielding	I can have shielded
you can have shielded
she can have shielded
we can have shielded
you can have shielded
they can have shielded	I can have been shielding
you can have been shielding
she can have been shielding
we can have been shielding
you can have been shielding
they can have been shielding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't shield
you can't shield
she can't shield
we can't shield
you can't shield
they can't shield 	I can't be shielding
you can't be shielding
she can't be shielding
we can't be shielding
you can't be shielding
they can't be shielding	I can't have shielded
you can't have shielded
she can't have shielded
we can't have shielded
you can't have shielded
they can't have shielded	I can't have been shielding
you can't have been shielding
she can't have been shielding
we can't have been shielding
you can't have been shielding
they can't have been shielding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I shield?
can you shield?
can she shield?
can we shield?
can you shield?
can they shield? 	can I be shielding?
can you be shielding?
can she be shielding?
can we be shielding?
can you be shielding?
can they be shielding? 	can I have shielded?
can you have shielded?
can she have shielded?
can we have shielded?
can you have shielded?
can they have shielded? 	can I have been shielding?
can you have been shielding?
can she have been shielding?
can we have been shielding?
can you have been shielding?
can they have been shielding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I shield?
can't you shield?
can't she shield?
can't we shield?
can't you shield?
can't they shield? 	can't I be shielding?
can't you be shielding?
can't she be shielding?
can't we be shielding?
can't you be shielding?
can't they be shielding? 	can't I have shielded?
can't you have shielded?
can't she have shielded?
can't we have shielded?
can't you have shielded?
can't they have shielded? 	can't I have been shielding?
can't you have been shielding?
can't she have been shielding?
can't we have been shielding?
can't you have been shielding?
can't they have been shielding?