| 
           
             | Affirmative  | 
              He has been thinking. | 
           
             | Negative | 
             He has not been thinking. | 
           
             | Interrogative | 
              Has he been   thinking?  | 
           
             | Form | 
             have or has + been + verb + ing  | 
           
             | Uses | 
             
- putting emphasis on the course or duration (not the result) 
 
- action that recently stopped or is still going on 
 
- finished action that influenced the present
 
 
 | 
Present Perfect Continuous     
    
Present perfect  continuous
       This page will present the present perfect continuous tense:
       
The form of the present perfect continuous: 
     
       
         | Have (in the simple present) | 
         been | 
         verb + ing | 
       
     
       
         | Affirmative | 
         Negative
          | Interrogative | 
       
         | I have been working. | 
         I have not been working. | 
         Have you been working? | 
       
       
Note:
         
           
             I have been driving = I've been driving  
               I have not been driving = I haven't been driving  | 
              He has been sleeping = He's been sleeping 
                He has not been sleeping = He hasn't been sleeping | 
            
Examples:
       
- I have been studying  English for two years.         
 
- Have you been studying English for two years?
 
- She's been revising her lessons.
 
- She hasn't been hanging around with her friends.
 
The use of the present perfect continuous:
       1. We use the Present Perfect Continuous to show that 
something started in the   past and has continued up until now 
indicating a duration. "For an hour", for two weeks", etc ...are used to
 indicate duration. 
       
         Examples:
         
- They have been watching TV   for the last three  hour. 
 
- She has been studying  at that institution  for three years. 
 
- What have you been doing for the last 30   minutes
 
2. The present perfect continuous is also used without 
indication of duration. This use indicates an action that has occurred  
"lately" or "recently". 
       
         Examples:
         
- I have been feeling really tired, recently. 
 
- She has been smoking  too much  lately.
 
 
 
 
Posted in English Grammar
 
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