I thought the video was interesting. I was a peer mentor for some Vietnamese students in high school, and found that some of their problems were similar to those in expressed in the video. It is difficult to learn grammar, especially from very different languages, like English and Vietnamese are. I also found that there is difficulty when some of these students learn one form of English, and then receive instruction in another. When I was in Thailand, many of the students were confused simply because many of the instruction they had received was British English, as opposed to American English. That included some slight variation in grammatical forms that we don't have.