I can shear you can shear he can shear we can shear you can shear they can shear
V-ing form
I can be shearing you can be shearing he can be shearing we can be shearing you can be shearing they can be shearing
Perfect
I can have sheared, shorn you can have sheared, shorn he can have sheared, shorn we can have sheared, shorn you can have sheared, shorn they can have sheared, shorn
V-ing perfect
I can have been shearing you can have been shearing he can have been shearing we can have been shearing you can have been shearing they can have been shearing
Negation
Simple form
I cannot shear you cannot shear he cannot shear we cannot shear you cannot shear they cannot shear
V-ing form
I cannot be shearing you cannot be shearing he cannot be shearing we cannot be shearing you cannot be shearing they cannot be shearing
Perfect
I cannot have sheared, shorn you cannot have sheared, shorn he cannot have sheared, shorn we cannot have sheared, shorn you cannot have sheared, shorn they cannot have sheared, shorn
V-ing perfect
I cannot have been shearing you cannot have been shearing he cannot have been shearing we cannot have been shearing you cannot have been shearing they cannot have been shearing
Interrogative form
Simple form
can I shear? can you shear? can he shear? can we shear? can you shear? can they shear?
V-ing form
can I be shearing? can you be shearing? can he be shearing? can we be shearing? can you be shearing? can they be shearing?
Perfect
can I have sheared, shorn? can you have sheared, shorn? can he have sheared, shorn? can we have sheared, shorn? can you have sheared, shorn? can they have sheared, shorn?
V-ing perfect
can I have been shearing? can you have been shearing? can he have been shearing? can we have been shearing? can you have been shearing? can they have been shearing?
Interro-negative form
Simple form
can I not shear? can you not shear? can he not shear? can we not shear? can you not shear? can they not shear?
V-ing form
can I not be shearing? can you not be shearing? can he not be shearing? can we not be shearing? can you not be shearing? can they not be shearing?
Perfect
can I not have sheared, shorn? can you not have sheared, shorn? can he not have sheared, shorn? can we not have sheared, shorn? can you not have sheared, shorn? can they not have sheared, shorn?
V-ing perfect
can I not have been shearing? can you not have been shearing? can he not have been shearing? can we not have been shearing? can you not have been shearing? can they not have been shearing?