Small letter "s" in "sie" is either "she" or "they". To tell which is which, you need the verb. Capital "S" in "Sie" is formal you.
- she = sie schwimmt
- they = sie schwimmen
- you = Sie schwimmen
If the sentence starts with the word "Sie", then you need to look at the verb or context to tell who it is.
For example, see if you can tell if these sentences mean she, they, or you:
- Sie gehen nach Hause.
- Gehen Sie nach Hause?
- Sie trinkt Bier.
Hope that helps!
ǝɥs '(ןɐɯɹoɟ) noʎ '(ʇxǝʇuoɔ pǝǝu noʎ) ʎǝɥʇ ɹo (ןɐɯɹoɟ) noʎ :sɹǝʍsuɐ
Oh, I see. I would report that as an error, because I don't really think that "when" is ever a valid translation of "wo." Perhaps there is some construction that uses "wo" and the sum of the phrase is something related to "when" and the "wo" part was assigned when, but I can't even think of a case where that would be true.
Not pronounced as "who". The pronunciation in the sentence is fine. Alternatively, here's another pronunciation for you to listen to: