Sentence examples for never know from inspiring English sources

'never know' is a correct and common part of a sentence in written English.
It is typically used to express uncertainty or the impossibility of knowing something for sure. It is often used in the negative form, but can also be used in the positive form. Examples: - "We may never know the true reason behind his behavior." - "I can never know if I made the right decision." - "You never know what the future holds." - "I never know how to respond to his jokes." - "She never knows when to stop talking."