Positive Structure

I/We/You/They  +have been +Ving+for/since +O              They have  been playing cricket for five years(वे पाँच साल से क्रिकेट खेल रहे हैं )

He/She/It/Name +has been +Ving+for/since +O                  He has been playing cricket since 2005(वो 2005 से क्रिकेट खेल रहा है)

Since – Point of Time (Time , Day , Date , Month, Year  etc)

For – Period of Time (5hrs , 10days , 3months , six years etc )

Questions

How long +have+ I/We/You/They+  been +Ving?                How long have they been playing cricket ? (वे कब से क्रिकेट खेल रहे हैं?)

How long +has+ he/she/it/Name+  been +Ving?                  How long has he been playing cricket ? (वो कब से क्रिकेट खेल रहा है?)