Unless Unless Unless!

Hi guys,'
Some  of us are still unsure of this 'unless' concept in synthesis.
Here's a tip:


think of unless as meaning “except if…;

I’ll be at your place at 9.00, unless [= except if] the bus is late.

The front room was never used, unless [= except if] we had important visitors.

Anyone else can think of other good examples to share?

PLEASE CLICK ON THIS LINK & TRY DO THESE EXERCISES on synthesis using 'if' & 'unless'.

http://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-45666.php