could ka use nahi bataya....aur would... shall.... will ka concept but samjh nahi aya

Yes, this lesson is not about can and could

Would aik axillary verb ha is k boht sa use ha wesa to.. 1)lekin yha kisi ke khuwaish pochna k liya use kiya ha 2)will future tense k liya use kiya ha. 3)but aik formal(ehtraman) tareeqa sa bat krna k liya shall use krein ga.. (I , we) k sath