Can – can’t:
3/2/2011 copyright 2006 www.brainybetty.com 2 Can – can’t ( giving / refusing permission ) We use can to give permission E.g. You can sit here . We use can’t to refuse permission E.g. You can’t use this computer
Must – Can’t:
Must – Can’t ( logical assumption ) We use must for positive logical assumptions . E.g. Jason must be at work . We use can’t for negative logical assumptions . E.g. Sam can’t know about this 3/2/2011 copyright 2006 www.brainybetty.com 3