`` Is it '' `` I am on the bus '' '' or '' `` I am in the bus '' '' ? I read it somewhere that if a moving object is at still then it is '' `` in '' '' otherwise it is '' `` on '' '' which is to be used . If that is true , then can I assume , that the moving object is at still if '' `` in '' '' is used in a sentence ? ''
I always see people writing the same sentence twice , as if to stress a point ; e.g. Am I right ? Or Am I right ? What really is its use ?