Tasken er for tung til at bære, så jeg tager en taxa til metroen.

In Danish, for has several meanings. In this sentence, for means too in the sense of excessively:

• Tasken er for tung = The bag is too heavy

So this is different from English for. A useful pattern is:

• for + adjective + til at ... = too + adjective + to ...

Examples:

• for dyr til at købe = too expensive to buy
• for træt til at arbejde = too tired to work

Tasken means the bag, while en taske means a bag.

Danish usually adds the definite article to the end of the noun:

• en taske = a bag
• tasken = the bag

So:

• Tasken er for tung ... = The bag is too heavy ...

This is one of the first big differences English speakers notice in Danish.

This is a very common Danish structure:

• for + adjective + til at + infinitive

It means:

• too + adjective + to + verb

So:

• for tung til at bære = too heavy to carry

Breakdown:

• for = too
• tung = heavy
• til at = to
• bære = carry

Other examples:

• for gammel til at lege her = too old to play here
• for syg til at gå på arbejde = too sick to go to work

Because after for + adjective, Danish normally uses til at before the infinitive.

So Danish says:

• for tung til at bære

not:

• for tung at bære

English uses just to carry, but Danish needs til at in this pattern.

Think of it as a fixed construction:

• for svært til at forstå = too difficult to understand
• for lille til at bo i = too small to live in

Because it comes after at, which usually introduces the infinitive in Danish.

• at bære = to carry

This is the dictionary/basic verb form. Danish infinitives often end in -e:

• at bære = to carry
• at tage = to take
• at gå = to go

So in til at bære, bære is just the infinitive.

Here, så means so or therefore.

The sentence has two parts:

• Tasken er for tung til at bære = The bag is too heavy to carry
• så jeg tager en taxa til metroen = so I’m taking a taxi to the metro

So så connects cause and result.

Be careful: så can also mean other things in Danish depending on context, such as then or so/very, but here it means so.

Both can exist in Danish, but they are not used in exactly the same way.

In your sentence, så is functioning like a coordinating conjunction meaning so, and the normal word order is:

• så jeg tager ...

That keeps the subject jeg before the verb tager.

If så is used more like an adverb meaning then, Danish often has inversion:

• så tager jeg ...

So for learners, a helpful rule is:

• så + subject + verb when så means so
• så + verb + subject often when så means then

Danish often uses the present tense for near-future actions, just like English sometimes does.

• jeg tager en taxa can mean I take a taxi or I’m taking a taxi / I’ll take a taxi, depending on context.

Here the context makes it future-like:

• The bag is too heavy, so the speaker decides to take a taxi.

This is very natural Danish. You do not always need a special future form.

Yes, both taxa and taxi are used, but taxa is very common in Danish.

So:

• en taxa = a taxi
• taxaen = the taxi

You may also hear taxi in speech and writing, but taxa is a standard Danish form.

Metroen means the metro.

Again, Danish usually adds the definite article to the noun:

• en metro = a metro
• metroen = the metro

In this sentence, the speaker is referring to a specific metro system or metro stop already understood from the situation, so the definite form is natural.

Literally, it means to the metro. In real usage, that often means to the metro station/entrance.

Danish sometimes uses the transport system name to mean the place where you access it.

So depending on context:

• til metroen could mean to the metro
• more naturally in English, often to the metro station

No. For tung means too heavy, not just very heavy.

Compare:

• meget tung = very heavy
• for tung = too heavy

That difference is important:

• Tasken er meget tung = The bag is very heavy.
• Tasken er for tung til at bære = The bag is too heavy to carry.

So for shows that the weight causes a problem.

Yes, it is natural and understandable Danish.

A native speaker might also say things like:

• Tasken er for tung til at bære, så jeg tager en taxa hen til metroen.
• Tasken er så tung, at jeg tager en taxa til metroen.

But your original sentence is perfectly good Danish.

The main things it demonstrates well are:

• definite nouns: tasken, metroen
• the too ... to ... structure: for tung til at bære
• present tense for a current decision: jeg tager
• natural cause/result with så