Giv lyd. Vi ses. Pas på dig selv. Hils derhjemme.

Yes. Giv is the imperative form of at give (to give).

In Giv lyd, the verb is being used as a command or friendly instruction, so Danish uses the imperative:

• at give = to give
• giv! = give!

Even though English would not usually say give sound, Danish uses this as an idiomatic expression meaning something like let me hear from you or get in touch.

Literally, Giv lyd means give sound.

But in real usage it is an idiomatic phrase meaning:

• let me hear from you
• drop me a line
• be in touch

It is a fairly common and natural expression, especially in friendly spoken or written Danish. It sounds like a warm way of saying that the speaker wants contact later.

Vi ses is a fixed expression meaning see you or more literally we’ll see each other.

The verb is at ses, which is a reciprocal/passive-looking form related to at se (to see). In this expression:

• vi = we
• ses = see each other / are seen

So Vi ses is not simply we see. It means something closer to:

• we’ll see each other
• see you

This is one of the most common ways to say goodbye in Danish.

Yes. Grammatically, it looks like present tense, but Danish often uses the present tense for future meaning when the context is clear.

So Vi ses literally looks like we see each other, but in practice it means:

• see you
• we’ll see each other

English does something similar in some situations, though not in exactly the same way.

In Pas på dig selv, pas på is a fixed verb phrase meaning:

• take care
• watch out
• be careful

So:

• pas = imperative of at passe
• på = part of the expression
• dig selv = yourself

You should learn passe på as a unit. On its own, passe can have several meanings, but passe på specifically means take care / be careful.

Both are possible, but they mean slightly different things.

• Pas på! = Watch out! / Be careful!
• Pas på dig selv. = Take care of yourself.

Adding dig selv makes it more personal and affectionate. It is often used when saying goodbye, especially to someone you care about.

About the grammar:

• dig = you (object form)
• selv = self

Together, dig selv means yourself.

Hils derhjemme means something like:

• say hi to everyone at home
• give my regards at home
• send my greetings to your family

It is a very natural Danish farewell expression.

Word by word:

• hils = greet / say hello to
• derhjemme = at home

But the full meaning is wider than the literal words. It usually refers to the people in the listener’s home or family, not just the physical place.

Good question. In Hils derhjemme, the object is understood rather than stated explicitly.

Literally, hils usually takes an object:

• Hils din mor = Say hi to your mother.
• Hils dem = Greet them / say hi to them.

But in Hils derhjemme, Danish leaves the people unspoken because they are obvious from context: the people at home, usually family or housemates.

So it functions like an idiomatic shorthand.

Derhjemme and hjemme are related, but they are not always identical.

• hjemme = at home
• derhjemme = at home there / back home / at your home

In this sentence, derhjemme points a bit more clearly to the other person’s home or household. That is why it fits well in Hils derhjemme.

It often gives the sense of:

• the people back home
• those at home

Not all of them.

• Giv lyd. → yes, imperative
• Vi ses. → no, this is not an imperative; it is a fixed expression
• Pas på dig selv. → yes, imperative
• Hils derhjemme. → yes, imperative

So three are commands or instructions, while Vi ses is more like a set farewell phrase meaning see you.

They are generally friendly and informal to neutral.

• Giv lyd sounds warm and conversational.
• Vi ses is very common and informal-neutral.
• Pas på dig selv is caring and personal.
• Hils derhjemme is friendly and familiar.

Together, they sound like something you might say to a friend, relative, colleague you know reasonably well, or someone you have a warm relationship with.

That is normal in Danish imperatives.

In commands, Danish usually uses just the imperative verb, without an explicit subject:

• Kom! = Come!
• Se! = Look!
• Hils derhjemme! = Say hi at home!
• Giv lyd! = Let me hear from you!

The subject you is understood automatically, just as in English commands.

Yes. Danish often softens imperatives through tone, context, or extra words.

For example:

• Giv lige lyd. = Just let me hear from you.
• Pas nu på dig selv. = Do take care of yourself.
• Hils derhjemme fra mig. = Say hi to everyone at home from me.

These versions can sound warmer, softer, or more explicitly personal. Danish politeness often depends less on special formal verb forms and more on wording and tone.