Friday, September 23, 2016

modal verbs - "can't" versus "couldn't", what is the difference?





  1. That can't be Obama at the door, it's too early.




  2. That couldn't be Obama at the door, it's too early.






What is the difference between them? Are they almost the same?




No comments:

Post a Comment

Simple past, Present perfect Past perfect

Can you tell me which form of the following sentences is the correct one please? Imagine two friends discussing the gym... I was in a good s...