English Lessons

in case  -  unless  
 

IN CASE :         In case expresses the possibility of something happening.   

1. It is used to express the idea of doing something to avoid a possible problem later on.  
   It gives the reason for an action.

•  Take an umbrella with you in case it rains. 
  =There is a possibility that it will rain, so it's a good idea to take an umbrella.   

In case + 'of'      In case of = if there is

•  In case of emergency, call this number. 
  = If there is an emergency, call this number.                       

UNLESS :        

Unless means 'except if' or 'only if''. 
Unless replaces 'if' + a negative verb.

1. Mary won't come unless you invite Tom. 
   = Mary won't come except if you invite Tom.. 
   = Mary will only come if you invite Tom. 
   = If you don't invite Tom, Mary won't come.
2.  We will have a picnic unless it rains.. 
   =We will have a picnic except if it rains. 
   =If it doesn't rain, we will have a picnic. 
   =If it rains, we won't have a picnic. 
                                                  
    
    
    
    
    
    
    
    
    
    
    
   

in case  -  unless    
 

            Complete the following sentences with 'in case' or 'unless'.