English verb conjugation
CAN SHIELD

Regular verb: shield - shielded - shielded

Affirmation

Simple form	V-ing form
I can shield you can shield he can shield we can shield you can shield they can shield	I can be shielding you can be shielding he can be shielding we can be shielding you can be shielding they can be shielding
Perfect	V-ing perfect
I can have shielded you can have shielded he 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 he 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
I cannot shield you cannot shield he cannot shield we cannot shield you cannot shield they cannot shield	I cannot be shielding you cannot be shielding he cannot be shielding we cannot be shielding you cannot be shielding they cannot be shielding
Perfect	V-ing perfect
I cannot have shielded you cannot have shielded he cannot have shielded we cannot have shielded you cannot have shielded they cannot have shielded	I cannot have been shielding you cannot have been shielding he cannot have been shielding we cannot have been shielding you cannot have been shielding they cannot have been shielding

Interrogative form

Simple form	V-ing form
can I shield? can you shield? can he shield? can we shield? can you shield? can they shield?	can I be shielding? can you be shielding? can he be shielding? can we be shielding? can you be shielding? can they be shielding?
Perfect	V-ing perfect
can I have shielded? can you have shielded? can he 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 he 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
can I not shield? can you not shield? can he not shield? can we not shield? can you not shield? can they not shield?	can I not be shielding? can you not be shielding? can he not be shielding? can we not be shielding? can you not be shielding? can they not be shielding?
Perfect	V-ing perfect
can I not have shielded? can you not have shielded? can he not have shielded? can we not have shielded? can you not have shielded? can they not have shielded?	can I not have been shielding? can you not have been shielding? can he not have been shielding? can we not have been shielding? can you not have been shielding? can they not have been shielding?