O‘. Qo’ldoshev, F. Bakiyev

Inkor gap shakli (Negative form) 
S + had + not + been + V
ing
+ SPS 
I had not been working since morning. (men ertalabdan buyon ishlamayotgan edim).                               
You had not been writing since morning. (sen ertalabdan buyon yozmayotgan eding).                           
He had not been reading since lunch time. (U tushlik paytidan buyon o’qimayotgan edi).                          
She had not been studying English since spring. (U bah. buyon Ing. o’rganmayotgan edi)                                             
It had not been working since morning. (u ertalabdan buyon ishlamayotgan edi).                                                   
We had not been singing since eleven o’clock. (biz soat 11 dan buyon kuylmayotgan edik).  
You had not been watching TV all day. Sizlar kun bo’yi TV tomosha qilmayotgan edingiz   
They had not been playing since morning. (ular ertalabdan buyon o’ynamayotgan edi).