雅思口语P2 Describe a time you taught something to a younger person(文字版）

Mention about the topic, a time that I showed something one or two on Kindle comes to my mind. Last summer vacation, I had an opportunity to teach my younger sister how to use the Kindle properly. It was actually not that hard to learn, but she was the kind of girl who stay focused on her study only, she has got no idea about the electronic products at all. By the way, she was 12 then, very smart. In her home, she learnt it in a much more efficient way. In 20 mins, she could be a good user I can say. After a couple of minutes, she got to know how to download and transfer the e-materials. More importantly, she was a big fan of reading. After mastering how to use the kindle correctly I noticed a smile of joy on her face, since she could put more than 100 books in it at a time. I was quite pleased as well since I did a good thing. So, that is it.