Breakdown of Sie würde mit einer warmen Decke auf dem Sofa liegen.
ein
a, an (eine)
sie
she
warm
warm
das Sofa
the sofa
Questions & Answers about Sie würde mit einer warmen Decke auf dem Sofa liegen.
Why is liegen at the very end of the sentence?
In German, when you use a helping verb like würde (would), the main action verb (liegen) gets pushed to the very end of the sentence in its basic dictionary form (the infinitive).
How do we know this means 'would lie' instead of 'will lie'?
The verb würde is the hypothetical form (Konjunktiv II), which translates to 'would'. If the sentence were about a factual event in the future tense ('She will lie...'), it would use wird instead of würde.
Why does the adjective have an -en ending in mit einer warmen Decke?
The preposition mit (with) always forces the following noun into the dative case. Because Decke (blanket) is feminine, 'a' becomes einer. In the dative case, adjectives that come after words like einer must take an -en ending.
Why is it auf dem Sofa (dative) rather than auf das Sofa (accusative)?
auf (on) is a two-way preposition. Because she is simply resting on the sofa (a location, answering the question 'where?'), we use the dative case. If she were actively moving onto the sofa (a direction, answering 'to where?'), we would use the accusative auf das Sofa.