Ek gly op nat trappe, daarom loop ek stadig wanneer dit reën.

Gly means to slip or to slide.

In this sentence, Ek gly op nat trappe means that the speaker tends to slip on wet stairs. It suggests losing footing accidentally, not sliding on purpose.

You may also see gly in other contexts, such as:

• Die kinders gly op die ys. — The children are sliding on the ice.
• Ek het gegly. — I slipped.

It can mean stairs, steps, or a staircase, depending on context.

Here, nat trappe is best understood as wet stairs/steps.
The singular is trap and the plural is trappe.

So:

• ’n trap — a step / a stair
• trappe — steps / stairs

Because the sentence is talking about wet stairs in general, not a specific set of stairs.

So:

• op nat trappe = on wet stairs, generally
• op die nat trappe = on the wet stairs, a specific set already known from context

Afrikaans often leaves out the article when speaking generally, especially with plural nouns.

Daarom means therefore, that is why, or for that reason.

It links the first idea and the result:

• Ek gly op nat trappe — I slip on wet stairs
• daarom loop ek stadig — therefore I walk slowly

So daarom shows cause and result.

Because Afrikaans main clauses usually follow the verb-second rule.

That means the finite verb normally comes in the second position of the clause. If you put daarom first, the verb must come next:

• Ek loop stadig.
• Daarom loop ek stadig.

So the subject ek moves after the verb.

This is very similar to Dutch and unlike normal English word order.

Because wanneer introduces a subordinate clause.

In Afrikaans, subordinate clauses usually send the verb toward the end of the clause. So:

• main clause: Dit reën.
• subordinate clause: wanneer dit reën

That is why the order is:

• wanneer
  • subject
    • verb

If the verb phrase were longer, the end-position pattern would be even clearer.

Because weather expressions in Afrikaans often use dit, just like English uses it.

So:

• Dit reën. — It is raining.
• Dit sneeu. — It is snowing.

Here dit does not refer to a real thing. It is just a grammatical subject, often called a dummy subject.

Here it most naturally describes a general habit or usual behavior:

I slip on wet stairs, so I walk slowly when it rains.

Afrikaans present tense can cover:

• a general truth or habit
• something happening now

In this sentence, the meaning is probably habitual because of the logic:

• slipping on wet stairs is a recurring problem
• walking slowly is a usual precaution

Often, yes.

Wanneer dit reën clearly means when it rains.
In everyday Afrikaans, as dit reën can also be used in a similar way, especially in speech.

However, wanneer is more clearly and unambiguously when, while as can sometimes also feel like if, depending on context.

So for a learner, wanneer is a very safe choice here.

The comma separates two full clauses:

• Ek gly op nat trappe
• daarom loop ek stadig wanneer dit reën

In Afrikaans, it is common to use a comma to separate clauses like this, especially when the second clause is introduced by a linking word such as daarom.

You could also write them as two separate sentences:

• Ek gly op nat trappe. Daarom loop ek stadig wanneer dit reën.

The ë shows that the vowels are pronounced separately.

So reën is not treated like one simple vowel sound. The spelling tells you to pronounce it in two syllables, roughly re-en.

This is called a diaeresis. In Afrikaans, it often helps show that two vowels should not be merged into one sound.

So the dots are important: they guide pronunciation.

Stadig means slowly or slow depending on context.

In loop ek stadig, it functions as an adverb and means slowly:

• Ek loop stadig. — I walk slowly.

So the speaker is saying they walk carefully and slowly because wet stairs are slippery.

In other contexts, stadig can also describe something as slow:

• Die verkeer is stadig. — The traffic is slow.