GRAMMAR: the past perfect tense

source: BBC Learning English         2015年8月18日
Time to learn a useful tense for telling stories – the past perfect tense. In fact, you could say it's perfect for stories! We've got two quizzes to test you, and then it's time for 6 Minute Grammar.
For more information: http://www.bbc.co.uk/learningenglish/...

# click this line for more grammar videos on past perfect & past perfect progressive