A/AN and the

A/AN and the

1. compare A and the

   • 'A man' because is the first time we talk about him
   • 'The man' because we know which man we means
   • we use 'The' when we are talking about a specific thing
     • Ex: Tim sat down on a chair tim sat down on the chair nearest the door.
     • we use 'the' when it's clear in the situation wich thing or person we mean.
       • in a room we talk about the light/the door...
       • in the same way, we say (go to) the bank, the post office...
         • we say 'once a week/three time a days/ 1,40 a kilo'