Past Perfect Continuous

What is the past perfect continuous?

C1 5 min

How to form the past perfect continuous

C1 4 min

Past perfect continuous — examples

C1 6 min

Past perfect continuous vs past perfect simple

C1 6 min

Past perfect continuous — uses and context

C1 8 min

Past perfect continuous — negative and questions

C1 5 min

Past perfect continuous — common mistakes

C1 5 min