Hi,<br/><br/>How can I express an idea that someone is behind us and he is far away from us?<br/><br/>Are these examples correct?<br/><br/><i>Dad is a long way behind us;</i><br/><br/><i>dad is a long way after us; or</i><br/><br/><i>dad is a long way in the back. </i><br/><br/>Can you revise them?<br/><br/>Thank you.