01:30Can you see the grey box? Sensory adaptation explained by Kit Yates #sciencedemo #optical #sensory
The Royal Institution
Learn English Grammar with 6 Minute Grammar from BBC Learning English! In this episode, it's time to learn a useful tense for telling stories – the past perfect tense. In fact, you could say it's perfect for stories! For more information: http://www.bbc.co.uk/learningenglish/english/course/intermediate/unit-7/session-2 Chapters: 0:00 Introduction 0:10 The past perfect 2:30 Listening tips 3:37 Quiz If you found this useful, you might also enjoy: The Past Simple and Past Perfect Tenses: https://youtu.be/8c20lS2t8f0 The Past Perfect Gameshow: https://youtu.be/05HXVE05vjg The Past Perfect Continuous Tense: https://youtu.be/YXXtNR7JCzY #BBCLearningEnglish #Grammar #6MinuteGrammar
Published 2015-08-18 · Watch on YouTube ↗
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