I pusletasken ligger der både en ekstra ble og en blød sut.

Because Danish usually makes the definite form by adding the article to the end of the noun.

• en pusletaske = a diaper bag / a changing bag
• pusletasken = the diaper bag / the changing bag

So I pusletasken means in the diaper bag.

This is one of the first big differences from English: Danish often puts the at the end of the noun instead of before it.

I means in, so I pusletasken means In the diaper bag.

It is placed first because Danish often puts the place or time first when that is the setting for the sentence. Starting with the location is very natural.

So the sentence structure is roughly:

• I pusletasken = setting/location
• ligger der = there is/are lying
• både en ekstra ble og en blød sut = both an extra diaper and a soft pacifier

Putting I pusletasken first gives emphasis to the location: In the diaper bag, there is...

Because Danish has V2 word order in main clauses. That means the finite verb normally comes in the second position.

When I pusletasken is moved to the front, it takes the first position. Then the verb must come next:

• I pusletasken = position 1
• ligger = position 2
• der = comes after the verb

So:

• Der ligger en ble i pusletasken = There is a diaper in the diaper bag
• I pusletasken ligger der en ble = In the diaper bag there is a diaper

Both are possible, but when the location is fronted, the verb moves before der.

Yes, it is similar to the existential there in English, as in There is... or There are...

In this sentence, der does not mean a physical place like over there. The physical location is already given by I pusletasken.

So here der is more like a grammatical placeholder:

• Der ligger en ble... = There is a diaper...
• I pusletasken ligger der... = In the diaper bag, there is...

English also does something similar:

• In the bag, there is an extra diaper...

Danish often uses position verbs where English would often just use be.

Here ligger means lies / is lying, and it is used because the objects are understood as being placed in the bag.

Common Danish position verbs include:

• ligge = lie
• stå = stand
• sidde = sit

So:

• Der er en ble i tasken = There is a diaper in the bag
• Der ligger en ble i tasken = There is a diaper in the bag, and it is lying there

The version with ligger sounds more natural and more specifically Danish in a context like this.

Både ... og ... means both ... and ...

So:

• både en ekstra ble og en blød sut = both an extra diaper and a soft pacifier

This is a fixed pairing in Danish, just like both ... and ... in English.

Other examples:

• Hun taler både dansk og engelsk. = She speaks both Danish and English.
• Vi har både kaffe og te. = We have both coffee and tea.

Because the sentence is introducing these items as things that are in the bag, not referring back to already identified objects.

• en ekstra ble = an extra diaper
• en blød sut = a soft pacifier

If you used the definite forms, it would sound like you mean specific items already known in the conversation:

• den ekstra ble
• den bløde sut

In this sentence, indefinite forms are the natural choice because the speaker is listing contents of the bag.

Because sut is a common-gender singular noun and it is in the indefinite singular.

For adjectives before a common-gender singular indefinite noun, Danish usually uses the base form:

• en blød sut
• en stor taske
• en lille ble

You would get -e in other situations, for example:

• den bløde sut = the soft pacifier
• bløde sutter = soft pacifiers

So blød is correct because the phrase is en + adjective + singular common-gender noun.

Because ekstra is one of those adjectives that normally does not change form.

So you can say:

• en ekstra ble
• et ekstra håndklæde
• ekstra bleer

By contrast, a regular adjective like blød does change:

• en blød sut
• et blødt tæppe
• bløde sutter

So ekstra is simply an indeclinable adjective in normal use.

It is a compound noun, which is extremely common in Danish.

It is made from:

• pusle = to change/play/fuss with a baby, depending on context
• taske = bag

So pusletaske is a bag for baby-changing supplies: a diaper bag or changing bag.

Danish forms many nouns this way, often as one single word:

• barnevogn = baby carriage / stroller
• håndtaske = handbag
• skoletaske = school bag

For English speakers, one important habit to build is: if English uses several words, Danish may very well use one compound word.

Yes, absolutely.

That version is also natural:

• Der ligger både en ekstra ble og en blød sut i pusletasken.

The difference is mainly focus:

• Der ligger ... i pusletasken puts the existence of the items first
• I pusletasken ligger der ... puts the location first

So the original sentence feels a bit more like:

• In the diaper bag, there are both...

while the alternative feels more like:

• There are both... in the diaper bag

Both are correct; they just organize the information differently.

Because Danish present-tense verbs do not change for singular or plural.

So ligger is used whether there is one item or several:

• Der ligger en ble i tasken.
• Der ligger to bleer i tasken.

This is much simpler than English, where we distinguish is and are. In Danish, the present tense form stays the same.

Yes, ble is the standard modern Danish word for diaper / nappy.

Its plural is:

• en ble
• flere bleer

In the sentence, en ekstra ble means an extra diaper, which is a very natural thing to say when talking about what is packed for a baby.

Sut is the normal Danish word for a pacifier. In British English, it is often dummy.

So:

• en sut = a pacifier
• en blød sut = a soft pacifier

If you are learning Danish through American English, pacifier is usually the best match. If through British English, dummy may be the more familiar translation.

It is neutral everyday Danish. Nothing in it sounds especially formal or especially slangy.

It sounds like a normal sentence someone might say when describing what is in a baby bag. The vocabulary is practical and common, and the word order is natural Danish.