Question

The meaning of ought

Answer 1

ought to be means should be. we generally make sentences like you ought to come. means you should have come .

Answer 2

It means that doing something is absolutely necessary.
eg. You ought to speak the truth 
      They ought to defend their statement and not be scared of anyone.
Ought is always used as 'ought to', except in negative sentences.
eg. You ought not to lie.
Ought to signifies more importance than 'should' or 'must'
Hope the answer was useful