Learn 10 words that come from "BACK" with Gill

source: Learn English with Gill (engVid)    2017年3月15日
Do you know the difference between "backbone", "background", "backpack", and" backside"? All these words are based on the noun "back" but mean very different things. In this lesson, I will teach you the meaning of ten words and expressions using "back". So don't back out. Watch the video, and you'll look back with satisfaction at the new vocabulary you've learned!
QUIZ: https://www.engvid.com/vocabulary-10-...