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                                  Comparatives of adjectives  | 
                                
                                
                                    | 
                                  Superiority | 
                                
                                
                                  |   | 
                                  This apple is greener than that one.  | 
                                
                                
                                  |   | 
                                  His house is bigger than hers.  | 
                                
                                
                                  |   | 
                                  She is taller than he is.  | 
                                
                                
                                  |   | 
                                  Equality | 
                                
                                
                                  |   | 
                                  This apple is as green as that one.  | 
                                
                                
                                  |   | 
                                  His house is as big as hers.  | 
                                
                                
                                  |   | 
                                  She is as tall as he is.  | 
                                
                                
                                  |   | 
                                  Subordination | 
                                
                                
                                  |   | 
                                  This apple is less green than that one.  | 
                                
                                
                                  |   | 
                                  His house is smaller than hers.  | 
                                
                                
                                  |   | 
                                  She is not as tall as he is.  |