noun
                                                the momentary present
                                                
                                                                                                Examples
                                                
                                                                                                        - Now is a good time to do it
- it worked up to right now
 
                                                                                        
                                                adverb
                                                in the historical present
                                                
                                                                                                Examples
                                                
                                                                                                        - at this point in the narration of a series of past events
- President Kennedy now calls in the National Guard
- Washington now decides to cross the Delaware
- the ship is now listing to port
 
                                                                                        
                                                adverb
                                                in these times
                                                                                                Synonyms
                                                
                                                
                                                                                                Examples
                                                
                                                                                                        - it is solely by their language that the upper classes nowadays are distinguished"- Nancy Mitford
- we now rarely see horse-drawn vehicles on city streets
- today almost every home has television
 
                                                                                        
                                                adverb
                                                used to preface a command or reproof or request
                                                
                                                                                                Examples
                                                
                                                                                                        - now hear this!
- now pay attention
 
                                                                                        
                                                adverb
                                                at the present moment
                                                                                                Synonyms
                                                
                                                                                                                                                                        at present
                                                                                                                                                            
                                                
                                                                                                Examples
                                                
                                                                                                        - goods now on sale
- the now-aging dictator
- they are now abroad
- he is busy at present writing a new novel
- it could happen any time now
 
                                                                                        
                                                adverb
                                                without delay or hesitation
                                                                                                Synonyms
                                                
                                                
                                                                                                Examples
                                                
                                                                                                        - with no time intervening
- he answered immediately
- found an answer straightaway
- an official accused of dishonesty should be suspended forthwith
- Come here now!
 
                                                                                        
                                                adverb
                                                (prefatory or transitional) indicates a change of subject or activity
                                                
                                                                                                Examples
                                                
                                                                                                        - Now the next problem is...
 
                                                                                        
                                                adverb
                                                in the immediate past
                                                
                                                                                                Examples
                                                
                                                                                                        - told me just now