De broeikas beschermt het zaaibed.

Dutch nouns have grammatical gender, and that affects which definite article they take.

• de broeikas = the greenhouse
• het zaaibed = the seedbed / seedbed area

In Dutch, singular nouns usually take either de or het. You generally have to learn this with each noun.

A useful pattern here is that broeikas is a de-word, while zaaibed is a het-word.

Also note:

• all plural nouns take de
• many diminutives take het

So in the plural, you would get:

• de broeikassen
• de zaaibedden

Because the subject is de broeikas, which is third-person singular: it protects.

The verb beschermen means to protect. In the present tense:

• ik bescherm = I protect
• jij beschermt = you protect
• hij/zij/het beschermt = he/she/it protects
• wij beschermen = we protect
• jullie beschermen = you protect
• zij beschermen = they protect

So:

• De broeikas beschermt het zaaibed.
• Literally: The greenhouse protects the seedbed.

The -t is the normal present-tense ending for third-person singular.

Yes, in this simple main clause it is basically the same:

• De broeikas = subject
• beschermt = verb
• het zaaibed = object

So the structure is:

subject + verb + object

This is very common in Dutch main clauses.

However, Dutch is often described as a verb-second language. That means the conjugated verb usually comes in the second position in a main clause. In this sentence, the subject happens to come first, so the result looks very English-like.

For example, you could also say:

• In de winter beschermt de broeikas het zaaibed.

Here, In de winter comes first, and the verb beschermt still stays in second position.

Yes. Dutch uses compound nouns very often.

• broeikas = broei
  • kas
• zaaibed = zaai
  • bed

Broadly speaking:

• broeien relates to warming, forcing growth, or creating a warm growing environment
• kas means greenhouse
• zaaien means to sow
• bed can mean bed, and in gardening it means a planting bed

So:

• broeikas = greenhouse
• zaaibed = seedbed / sowing bed

This is very normal Dutch word-building. English sometimes uses separate words where Dutch prefers one compound word.

A rough English-friendly guide:

• broeikas ≈ BROO-eye-kahs
• beschermt ≈ buh-SKHERMT
• zaaibed ≈ ZAH-eye-bet

A few pronunciation notes:

• oe in Dutch sounds like oo in boot
• ij / ei often sounds somewhat like eye
• sch in beschermt is not like English sh; it is a harsher Dutch sound
• the final d in zaaibed is often pronounced closer to a t sound at the end

If you are learning to say it naturally, the hardest part is probably beschermt, because of the consonant cluster at the end.

Its main meaning is to protect.

Depending on context, English might translate it as:

• protect
• shield
• guard
• safeguard

In this sentence, protects is the most natural translation.

So De broeikas beschermt het zaaibed suggests that the greenhouse protects the seedbed from things like:

• cold
• wind
• frost
• too much rain

Because Dutch usually uses an article when talking about a specific noun, just like English does.

Here, the sentence refers to:

• the greenhouse
• the seedbed

So Dutch uses:

• de
• het

If you wanted an indefinite meaning, you would use een:

• Een broeikas beschermt een zaaibed.

That means A greenhouse protects a seedbed, which sounds more general.

So the original sentence with de and het sounds like it is talking about a particular greenhouse and a particular seedbed.

The plural forms are:

• de broeikas → de broeikassen
• het zaaibed → de zaaibedden

Notice two things:

1. het becomes de in the plural
   Even though zaaibed is a het-word in the singular, the plural is de zaaibedden.

2. The endings are not the same

   • broeikas → broeikassen
   • zaaibed → zaaibedden

This is normal in Dutch. You often need to learn plural forms individually, although some patterns are common.

Yes, but only if you follow Dutch word-order rules.

The basic sentence is:

• De broeikas beschermt het zaaibed.

You can move another element to the front, but then the verb must still stay in second position. For example:

• Het zaaibed beschermt de broeikas.

This is grammatically correct, but it means something different: The seedbed protects the greenhouse, which is probably not what you want.

Or:

• Tegen de kou beschermt de broeikas het zaaibed.

This means: Against the cold, the greenhouse protects the seedbed.

So yes, Dutch allows different word orders, but the sentence meaning and emphasis can change.