B1Englishen.b1.012

Past perfect continuous: duration before a past event

Structure:

had + been + verb-ing + for/since + when/before + past simple

Example:

She had been working there for ten years when she retired.

Examples

She had been working there for ten years when she retired.

Question 1 of 20 correct

Which grammar pattern does this sentence use? "She had been working there for ten years when she retired."

Although / though / even though + clause

Articles: the + nationality groups and unique nouns

Articles: zero article with abstract concepts

As long as / provided that / on condition that

Be allowed to: passive permission