Jeg måler væggen med et målebånd, før jeg køber hylderne.

Måler is the present tense form of the verb at måle.

In Danish, the present tense is usually made by adding -r to the infinitive:

• at måle → måler
• at købe → køber

So jeg måler is the normal way to say I measure / I am measuring.

Also, Danish verbs do not change depending on the subject the way English verbs sometimes do. So:

• jeg måler
• du måler
• han måler
• vi måler

The verb form stays the same.

In Danish, the definite article is often attached to the end of the noun instead of being a separate word.

So:

• væg = wall
• væggen = the wall

The ending -en is the definite singular ending for many common-gender nouns.

This is a very common Danish pattern:

• bog → bogen
• stol → stolen
• væg → væggen

A separate word like den is usually used when there is an adjective:

• væggen = the wall
• den store væg = the big wall

Danish nouns have grammatical gender, and most singular nouns use either en or et as their indefinite article.

• en is used with common-gender nouns
• et is used with neuter nouns

Målebånd is a neuter noun, so it takes et:

• et målebånd

Unfortunately, there is no completely reliable rule that lets you guess every noun’s gender. You often have to learn the article together with the noun:

• en væg
• et målebånd
• en hylde

A good habit is to memorize nouns with their article from the start.

Because Danish loves compound nouns.

Målebånd is made from:

• måle = measure
• bånd = tape/band

Together they form one noun: målebånd.

This is very normal in Danish, much more than in English. English often writes similar expressions as two words, but Danish usually combines them:

• toothbrush style compounds are extremely common
• boghandel, sommerferie, køkkenbord, målebånd

So writing måle bånd would be wrong here.

Hylderne is the definite plural form of hylde.

Here is the pattern:

• hylde = shelf
• hylder = shelves
• hylderne = the shelves

So the ending -ne marks the in the plural.

This is another common Danish pattern:

• bog → bøger → bøgerne
• stol → stole → stolene
• hylde → hylder → hylderne

For the same reason as with væggen: Danish usually adds definiteness to the noun itself.

So:

• hylder = shelves
• hylderne = the shelves

You do not normally say a separate de hylder unless you are using a different structure, for example with an adjective:

• hylderne = the shelves
• de nye hylder = the new shelves

So the ending already contains the idea of the.

Med is used to show the tool or instrument used to do something.

So:

• med et målebånd = using a measuring tape

This is very similar to English with in sentences like:

• cut it with a knife
• write with a pen
• measure it with a tape measure

So med is the natural preposition here.

Because Danish often uses the present tense for future meaning when the context makes the time clear.

Here, the word før already shows the sequence of events, so jeg køber hylderne can naturally refer to something that will happen later.

This is very common in Danish:

• Jeg kommer i morgen.
• Vi rejser på fredag.
• Jeg ringer, når jeg er hjemme.

So køber does not have to mean that the buying is happening right now. It can mean a future action.

Because før introduces a subordinate clause, and subordinate clauses do not use the same kind of inversion that main clauses often do.

So after før, the normal order is:

• jeg køber hylderne

Compare this with a main clause:

• Jeg køber hylderne.

If you move a time expression to the front of a main clause, Danish often uses inversion:

• I morgen køber jeg hylderne.

But after før, you are inside a subordinate clause, so you keep:

• før jeg køber hylderne

Yes, absolutely.

You can say:

• Før jeg køber hylderne, måler jeg væggen med et målebånd.

That is very natural Danish.

Notice what happens then: the main clause changes word order because the subordinate clause comes first. Danish follows the verb-second pattern in main clauses, so you get:

• Før jeg køber hylderne, måler jeg ...

Not:

• Før jeg køber hylderne, jeg måler ...

So this is a good example of Danish word-order rules working together.

The comma is there because før jeg køber hylderne is a subordinate clause.

In modern Danish, the comma before a subordinate clause is often optional, depending on whether the writer uses start comma or no-start comma.

So both of these can be accepted:

• Jeg måler væggen med et målebånd, før jeg køber hylderne.
• Jeg måler væggen med et målebånd før jeg køber hylderne.

However, if the subordinate clause comes first, you do need a comma after it:

• Før jeg køber hylderne, måler jeg væggen med et målebånd.

The tricky ones here are å and ø.

• å in måler and målebånd is roughly like the vowel in English law or more for many speakers, though not exactly the same.
• ø in køber and før does not exist in normal English. A rough approximation is the vowel in British English bird without strongly pronouncing the r, but that is only approximate.

A few extra notes:

• før has a soft, rounded vowel sound
• køber begins with that same ø sound
• Danish pronunciation is often less “fully pronounced” than the spelling suggests, so listening to native audio helps a lot

These are the forms you would usually look up:

• måler → at måle
• væggen → en væg
• målebånd → et målebånd
• køber → at købe
• hylderne → en hylde

This is useful because Danish sentences often contain:

• a conjugated verb instead of the infinitive
• a definite noun instead of the basic form
• a plural form instead of the singular

So when learning vocabulary, it helps to recognize how the sentence form connects to the dictionary form.