English verb conjugation
CAN THRESH

Regular verb: thresh - threshed - threshed

Affirmation

Simple form	V-ing form
I can thresh you can thresh he can thresh we can thresh you can thresh they can thresh	I can be threshing you can be threshing he can be threshing we can be threshing you can be threshing they can be threshing
Perfect	V-ing perfect
I can have threshed you can have threshed he can have threshed we can have threshed you can have threshed they can have threshed	I can have been threshing you can have been threshing he can have been threshing we can have been threshing you can have been threshing they can have been threshing

Negation

Simple form	V-ing form
I cannot thresh you cannot thresh he cannot thresh we cannot thresh you cannot thresh they cannot thresh	I cannot be threshing you cannot be threshing he cannot be threshing we cannot be threshing you cannot be threshing they cannot be threshing
Perfect	V-ing perfect
I cannot have threshed you cannot have threshed he cannot have threshed we cannot have threshed you cannot have threshed they cannot have threshed	I cannot have been threshing you cannot have been threshing he cannot have been threshing we cannot have been threshing you cannot have been threshing they cannot have been threshing

Interrogative form

Simple form	V-ing form
can I thresh? can you thresh? can he thresh? can we thresh? can you thresh? can they thresh?	can I be threshing? can you be threshing? can he be threshing? can we be threshing? can you be threshing? can they be threshing?
Perfect	V-ing perfect
can I have threshed? can you have threshed? can he have threshed? can we have threshed? can you have threshed? can they have threshed?	can I have been threshing? can you have been threshing? can he have been threshing? can we have been threshing? can you have been threshing? can they have been threshing?

Interro-negative form

Simple form	V-ing form
can I not thresh? can you not thresh? can he not thresh? can we not thresh? can you not thresh? can they not thresh?	can I not be threshing? can you not be threshing? can he not be threshing? can we not be threshing? can you not be threshing? can they not be threshing?
Perfect	V-ing perfect
can I not have threshed? can you not have threshed? can he not have threshed? can we not have threshed? can you not have threshed? can they not have threshed?	can I not have been threshing? can you not have been threshing? can he not have been threshing? can we not have been threshing? can you not have been threshing? can they not have been threshing?