18. The progressive mood is often thus expressed in questions by an
interposed verb, like _gå, stå, sitta_, between the principal verb and
its object, where English requires an adverbial clause in addition to
the progressive form. Thus, _vad sitter du och tänker på_--what are you
thinking of (as you are sitting there)? The sense of the line in the
text is, what are you pondering on, while walking thus alone?
26. _den slående björnen_, in prose usually _slagbjörnen_, the large,
man-eating bear.