Sorry for this seemingly silly sentence, but in the beginning of the course, we cannot teach learners difficult words yet, so the sentences remain simple and weird at times :D Their purpose is to help you get used to Vietnamese keyboard, the pronunciation, the sentence structure and remember the new words. The sentences will get more creative, diverse and meaningful in later skills, so keep on learning!
P/s: Since the sentence is silly, why don't you try to interpret it yourself. For the case of this sentence, imagine a couple sharing a moment of farewell at the train station. The girl takes off one of her glove and gives it to her lover. They kiss, and she reluctantly gets on the train. As the train departs, she looks back. He has gone, while "the glove is at the train station.". Do you see what I mean? :) Hope this motivates you to support this course!
Yep, the two words are pretty similar in meanings and usage:
Ở (verb) = to live, to be somewhere. e.g: Anh ấy ở nhà bên (He lives next door); Tôi ở nhà (I am home); Cô ấy ở Luân Đôn (She lives in London).
Ở 在 (preposition) = at, in, on, etc. e.g: Trái/quả táo ở trên bàn (The apple is on the table); Họ đang chơi bóng đá ở sân sau (They are playing soccer in the back yard).
In case you have not gotten to tips and notes under Classifiers 1 and Animals 1, there are more details about classifiers. Notably in Animals 1, there are special meanings for nouns without classifiers. And as I scrolled through other tips and notes, I see we will be introduced to more and more classifiers. Relief? or Oh, well (smile).
If you like to see all in one, go to https://duome.eu/tips/en/vi
Note: most of the duome site info i see are from 2018. Hopefully that official unofficial site will get more recent updates!