I'm trying to figure out the difference between the following two sentences in regards to the use of beiden/beide.
Die beiden kommen um 8 Uhr zu Besuch.
Sie beide kommen.
I'm trying to understand when one would use one form of beide over the other but I'm unable to figure out what the difference is.
I've read the following link but I'm still confused: Correct usage of "beide": does it require the article?
My german friend who I asked earlier today, could only come up with the first sentence answering the question "was macht man?" while the second question asks "wer kommt?" but I'm not sure that helps me.
For example, the first sentence states:
The two of them are coming at 8 to visit
and the second sentence just states
They are both coming. (in the context of asking who is coming?)
But could you also use the second sentence as a start to a longer explanation? For example:
Sie beide kommen, um mir zu helfen. (or is that completely wrong?)
In what situations would you use each form of beide?