Wednesday, 22 May 2013

PRESENT PERFECT CONTINUOUS TENSE



PRESENT  PERFECT CONTINUOUS TENSE


It is used to show that a work is being done for a time. It is still being done now also. It may be continuing   for a particular duration or  from a point of  time i.e. for two hours or since morning.


With time words ‘for  or since’ are generally used. 

Has or Have with been and first form of  verb and ing is used in these sentences.

For Example :
  • He has been sleeping for two hours.
  • You have been working since morning.























AFFIRMATIVE SENTENCES

In affirmative sentence 

With First person, Second person singular and plural and third person plural ‘have’ is used with ‘been’ and first form  of verb and ‘ing’ is used.


With third person singular ‘has’ is used with ‘been’ and first   form  of verb and ‘ing’ is used. To depict time since  or for is used.


For Example :
  • I have been waiting for you for one hour.
  • Boys have been playing since morning.
  • You have been preparing for your examination for the last two months.
  • She has been working in this office for two years.



NEGATIVE SENTENCES

In negative sentences has have been and not is used with first form of verb and ing.

For example :
  • I have not been working since morning.
  • She has not been dancing for two hours.
  • You have not been watching T.V. for half an hour.
  • Children have not been shouting for an hour.



INTERROGATIVE SENTENCES


In Interrogative sentences Has Have is used before Subject.


For Example: 
  • Has he been waiting for you for two hours?
  • Have you been playing since morning?
  • Have children been doing their work for two hours ?
  • Have we been living here  for the last two years?


Similarly in interrogative negative sentences Has Have is used before subject and not is  used before first  form of verb with ing  in the sentence.


For example :
  • Has  she not been singing for two hours ?
  • Have the boys not been playing a match since morning?
  • Has she not been cooking food since 2 P.M. ?
  • Have you not been accompanying him for  two days?











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