De partnercheck controleert de achtknoop en de zekerlus.

Because Dutch very often forms compound nouns by writing them as a single word.

So partnercheck is:

• partner = partner
• check = check

Together, partnercheck means something like partner check. In English, we often leave these as two words, but in Dutch compounds are usually written as one word.

This is very common in Dutch:

• treinstation = train station
• veiligheidscontrole = safety check
• klimhal = climbing gym

So partnercheck follows a normal Dutch pattern.

Because the subject is de partnercheck, which is singular.

The verb is the present tense of controleren = to check / to inspect.

The present tense pattern is:

• ik controleer
• jij controleert
• hij/zij/het controleert
• de partnercheck controleert

So controleert is the correct third person singular form.

A useful way to think about it:

• English: The partner check checks...
• Dutch: De partnercheck controleert...

Yes, in this sentence it is very similar to English.

The structure is:

• De partnercheck = subject
• controleert = verb
• de achtknoop en de zekerlus = object

So it follows a normal main-clause Dutch pattern:

Subject + finite verb + object

That said, Dutch word order can change more than English in other sentence types, especially in:

• subordinate clauses
• questions
• sentences with extra adverbs or time phrases

But this sentence is straightforward and very natural.

Because all three nouns here are de-words:

• de partnercheck
• de achtknoop
• de zekerlus

In Dutch, singular nouns usually take either de or het. You often just have to learn which article belongs to each noun.

Also, Dutch normally repeats the article for each noun in a list if each noun has its own article:

• de achtknoop en de zekerlus

This is the most natural full form. In some contexts, Dutch can omit repetition, but here repeating de sounds clear and normal.

Unfortunately, there is no single rule that works for every noun, so you often need to learn the article together with the word.

Still, there are some helpful tendencies:

• plural nouns always take de
• many nouns referring to people are de-words
• many compound nouns take the article of the last part of the compound

That last point is especially useful here.

For example:

• partnercheck ends in check → de check → so de partnercheck
• achtknoop ends in knoop → de knoop → so de achtknoop
• zekerlus ends in lus → de lus → so de zekerlus

So for compounds, the final element often tells you the gender/article.

It is a compound noun:

• acht = eight
• knoop = knot

Literally, it is eight-knot, referring to the figure-eight knot.

Dutch often names things by combining descriptive parts directly into one noun. So instead of a longer phrase, Dutch uses one compact compound.

This is very typical Dutch word-building.

It is also a compound noun:

• zeker relates to securing / belaying / making safe
• lus = loop

So zekerlus literally means something like safety loop or belay loop, depending on the climbing context.

The exact English term depends on the equipment terminology being used, but grammatically it is just another normal Dutch compound noun.

Dutch handles this very similarly to English here.

You can simply say:

• de achtknoop en de zekerlus

That means the figure-eight knot and the belay loop.

Each noun keeps its own article because they are two separate nouns joined by en = and.

So the structure is very direct:

• article + noun
• en
• article + noun

A rough approximation is:

con-tro-LEERT

A few pronunciation notes:

• the stress is on the last syllable: -leert
• ee is a long vowel, a bit like the vowel in English day, but without the English glide
• the final -t is pronounced

So if you say it carefully, it is roughly: kon-troh-LEERT

Not perfect English spelling, of course, but good enough as a starting point.

Yes, that is one of the sounds English speakers often find tricky.

In achtknoop:

• acht contains the Dutch ch, which is a throat sound, not like English ch in chair
• knoop starts with kn-, and unlike in modern English, the k is pronounced in Dutch

A rough guide:

• acht ≈ a guttural akht
• knoop ≈ knope with a long oo

So roughly: AKHT-knope

Two important points:

• pronounce the k in knoop
• do not pronounce ch like English tch

Grammatically, partnercheck is the subject of the sentence, so it is presented as the thing that performs the action:

• De partnercheck controleert...

This is similar to English sentences like:

• The inspection checks...
• The test measures...

Of course, in real life, people perform the partner check. But Dutch, like English, often lets an activity, procedure, or process act as the grammatical subject.

So the sentence is perfectly natural even though a person is implied in the real-world situation.

Yes, definitely. This is an important vocabulary point.

Dutch controleren usually means:

• to check
• to inspect
• to verify

It usually does not mean English to control in the sense of to command or to govern.

So this is a classic false-friend warning:

• Dutch controleren = check / inspect
• English control is usually something else

That makes controleert very natural in this sentence: it means the partner check verifies those two things.