2015-2016学年 译林版 选修七 Unit 1 Living with technology languagepoints课件 (15)
2015-2016学年 译林版 选修七  Unit 1 Living with technology languagepoints课件 (15)第2页

Because of this, it is still uncertain who invented TV. (page 2, lines 6-7)

It was my first chance to use that software to edit the video extracts. I was uncertain about how to add background music to it. I am uncertain what job I am going to take in the future. Don’t take his words seriously. He is a person of uncertain temper.