Affirmative sentence
- Perfect continues tense tell about the time, if we talk about the particular point of time or a definite time "since" is used where the starting point of time is definite)
- like since may, since 3 o clock, since 1984
- and if there is definite point of time is not certain we use "for"( if the point of time is uncertain) then we use "for”.
- I have been dancing for two hours.( here we used for because there is no certain point of time )
- He has been sleeping since 6 O’ cock ( here we used since because the point of time is certain.)
- I have been doing this since may.
Negative sentence
- I have not been working for four hours.
- He has not been sleeping since 6 o’ clock.
- I have-not been coming here since May.
- She is not doing this science 1989.
Interrogative sentence - affirmative
- have I been working for four hours?
- Has he been sleeping since 6 0’ clock.
- Has she doing this since July.
- Have they not coming for last two days?
Interrogative sentence - negative
- Have I not been working for four hours?
- He has not been sleeping since 6 o’ clock?
- Has she not been doing this since July?
- Why have not been replying for last few days.
Example
- He has been living here for a month.
- Police has been searching the thief for last four days.
- I have been doing this task since morning.
- He has been teaching in this school since 5th July 1985.
- She has not been coming school for four days.
- She has not been talking to me for 3 days.
- We have not been going to our office for few days.
- He has been ill since Monday
- This baby has been crying since yesterday
- she has not been doing home work since yesterday.
- Has he been playing for one hour?
- Has he been walking since morning?
- Has police been searching for police for one month?
- Has she not been suffering from fever since last night?
- Has she not been reading her book for three days?
- Why he has not been coming school for two days?
- Why has he been upsetting for last two days?
- Why we have not been taking admission in this school since July?
- Why have you been treating your friend like this for few days?
- Why have they been using my car since morning?
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