Breakdown of Der Schlafwandler war nachts barfuß im Haus.
sein
to be
das Haus
the house
im
in the (used with months) / in the (contraction of in + dem)
nachts
at night
der Schlafwandler
the sleepwalker
barfuß
barefoot
Questions & Answers about Der Schlafwandler war nachts barfuß im Haus.
Since this lesson is about the present participle (Partizip I), how could I use one to say he was "sleepwalking" through the house?
You can take the infinitive verb schlafwandeln (to sleepwalk) and add a -d to make the present participle: schlafwandelnd. Used as an adverb of manner, you could rewrite the sentence to describe his action: Er lief nachts schlafwandelnd durch das Haus. (He walked through the house at night, sleepwalking.)
Why does nachts have an -s at the end if Nacht is a feminine noun?
Adding an -s is a common way to turn nouns into adverbs of time (like morgens or abends). Even though Nacht is feminine, it borrows this -s ending by copying the pattern of those masculine time words. It translates to "at night" or "during the night."
Why is the word order nachts barfuß im Haus?
This follows the standard German rule for sentence order often remembered as "Time, Manner, Place" (TeKaMoLo). The word nachts tells us when it happened (Time), barfuß tells us how he was moving around (Manner), and im Haus tells us where he was (Place).
Why do we use im Haus here instead of ins Haus?
The preposition in is a two-way preposition. Because the sleepwalker is already located inside the house (answering the question "where?"), we use the dative case. The words in + dem contract to im. If he were walking from the outside garden into the house (answering "where to?"), you would use the accusative ins Haus.
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