could slide
Irregular verb: slide - slid- slid

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could slide
you could slide
he could slide
we could slide
you could slide
they could slide 	I could be sliding
you could be sliding
he could be sliding
we could be sliding
you could be sliding
they could be sliding	I could have slid
you could have slid
he could have slid
we could have slid
you could have slid
they could have slid	I could have been sliding
you could have been sliding
he could have been sliding
we could have been sliding
you could have been sliding
they could have been sliding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not slide
you could not slide
he could not slide
we could not slide
you could not slide
they could not slide 	I could not be sliding
you could not be sliding
he could not be sliding
we could not be sliding
you could not be sliding
they could not be sliding	I could not have slid
you could not have slid
he could not have slid
we could not have slid
you could not have slid
they could not have slid	I could not have been sliding
you could not have been sliding
he could not have been sliding
we could not have been sliding
you could not have been sliding
they could not have been sliding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I slide?
could you slide?
could he slide?
could we slide?
could you slide?
could they slide? 	could I be sliding?
could you be sliding?
could he be sliding?
could we be sliding?
could you be sliding?
could they be sliding? 	could I have slid?
could you have slid?
could he have slid?
could we have slid?
could you have slid?
could they have slid? 	could I have been sliding?
could you have been sliding?
could he have been sliding?
could we have been sliding?
could you have been sliding?
could they have been sliding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not slide?
could you not slide?
could he not slide?
could we not slide?
could you not slide?
could they not slide? 	could I not be sliding?
could you not be sliding?
could he not be sliding?
could we not be sliding?
could you not be sliding?
could they not be sliding? 	could I not have slid?
could you not have slid?
could he not have slid?
could we not have slid?
could you not have slid?
could they not have slid? 	could I not have been sliding?
could you not have been sliding?
could he not have been sliding?
could we not have been sliding?
could you not have been sliding?
could they not have been sliding?