English Grammar - UNLESS & IF NOT - negative conditional

http://www.engvid.com Students are often told that unless they practice, they won't improve. But if you don't know what 'unless' means or how to use it, you might get the wrong idea. This grammar lesson focuses on the negative conditional and the consequences that follow. I'll teach you when and how to use 'unless', 'if not', 'as long as', and more. Test your understanding of this lesson with the quiz: http://www.engvid.com/english-grammar-negative-conditional/