Learn Danish: Han lægger sig med hovedet på puden. - He lies down with his head on the pillow.

In Danish, there is a big difference between movement and resting. Lægger means to lay something down (an action), while ligger means to be lying down (a state of rest). To express the action of getting into bed, you use the reflexive verb lægger sig (literally: he lays himself). If he were already resting on the pillow, you would just say han ligger.

Why does the sentence use "hovedet" (the head) instead of "sit hoved" (his head)?

When talking about body parts, Danish usually uses the definite form (like hovedet, meaning the head) instead of a possessive pronoun (like sit or hans) if it is obvious whose body part it is. Since he is the one lying down, it is perfectly clear from context that it is his own head.

How do you build the word "hovedet"?

The base noun is et hoved (a head). To make an et-word definite (the head), you add the suffix -et to the end, resulting in hovedet. Note that in spoken Danish, the "d" is soft and the final "t" is usually silent.

What is the base form of "puden"?

The base word is en pude (a pillow). Because it is a common-gender noun (an en-word) that already ends in the letter e, you simply add an n to make it definite, giving you puden (the pillow).