B1Englishen.b1.011

Past perfect continuous: form

Structure:

had + been + verb-ing

Example:

They had been driving for six hours before they stopped.

Examples

They had been driving for six hours before they stopped.

Question 1 of 20 correct

Which grammar pattern does this sentence use? "They had been driving for six hours before they stopped."

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