Det er en slags affald.

Det is a very common Danish pronoun meaning it. In a sentence like Det er en slags affald, it usually refers to some thing, substance, or material already known from the context.

Danish also uses det er very often in simple identification sentences:

• Det er en bil.
• Det er godt.
• Det er plastik.

So here, det is just the normal way to say it.

Er is the present tense of at være (to be).

So:

• at være = to be
• er = am / is / are

In Det er en slags affald, er works exactly like is in English.

This is a very common learner question.

The word slags belongs to the fixed expression en slags, which means a kind of or a sort of. Even if the noun after it is a neuter noun, you still normally say en slags.

So:

• en slags affald
• en slags problem
• en slags huskeregel

The article goes with slags, not with the following noun.

In this sentence, slags means kind, sort, or type.

The expression en slags is often used when the speaker is being a little approximate or informal:

• Det er en slags maskine. = It is a kind of machine.
• Hun er en slags leder. = She is a sort of leader.

So en slags can sound slightly less exact than a more technical phrase like en type.

Because affald is usually an uncountable noun, like waste, garbage, or trash in English.

With uncountable nouns, Danish often does not use an article in this kind of sentence:

• Det er vand.
• Det er sukker.
• Det er affald.

So affald appears without et here.

Affald is an et-word:

• et affald is the dictionary form

But in this sentence you do not see et, because the noun is being used as an uncountable material noun after en slags.

You might see the definite form in other contexts:

• affaldet = the waste / the trash

Yes, absolutely. Det er en type affald is also correct and natural.

There is a small nuance:

• en slags often sounds a bit looser, more conversational, or less precise
• en type can sound a bit more neutral or slightly more factual

In many everyday situations, they are interchangeable.

The word order is very straightforward:

• Det = subject
• er = verb
• en slags affald = complement

So the pattern is:

subject + verb + complement

This is the normal order in a simple main clause in Danish.

A rough guide is that affald sounds something like A-fal, but the exact Danish sounds are not the same as English.

A few points:

• the first syllable is stressed: AF-fald
• the d at the end is usually very soft or almost not heard clearly
• the vowels are shorter and flatter than many English speakers expect

If you are learning pronunciation, it is best to listen to native audio, because Danish final consonants and vowels often behave differently from what spelling suggests.

Yes, very different.

• Det er = it is
• Der er = there is / there are

So:

• Det er en slags affald. = It is a kind of waste.
• Der er affald. = There is waste.

English speakers often mix these up, so it is good to notice the difference early.

Yes. In modern Danish, slags is often used in expressions like:

• en slags
• alle slags
• to slags

Examples:

• en slags affald = one kind of waste
• to slags affald = two kinds of waste
• alle slags affald = all kinds of waste

So slags is very flexible in this meaning.

There are several natural alternatives, depending on tone and context:

• Det er affald. = It is waste.
• Det er en type affald. = It is a type of waste.
• Det er noget affald. = It is some waste.
• Det er en form for affald. = It is a form of waste.

En slags is especially common when the speaker is classifying something in a general or slightly informal way.