Take a look at this: 
Subject + has/have + been + verb + ing form + for/since + time
Ex.
1. I have been crying for a week.
2. He/She has been writing since 1989.
3. We have been crying for a week.
4. They have been reading since 1993.
Thank You
lakhan kumar patnaik
B.E.(ELECTRICAL)
Ex.
1. I have been crying for a week.
2. He/She has been writing since 1989.
3. We have been crying for a week.
4. They have been reading since 1993.
Thank You
lakhan kumar patnaik
B.E.(ELECTRICAL)
