Improve your English grammar with BBC Learning English. In this episode of 6 Minute Grammar, Neil, Catherine and Finn show you how to use the past perfect continuous tense which we use to give background information to an event in the past.
Remember to check our website for more practice activities: https://www.bbc.co.uk/learningenglish/english/course/intermediate/unit-14/session-2/
0:08 Past perfect continuous
2:59 How to form the past perfect continuous
3:58 Other ways to use the past perfect continuous