Die dreineringsgat is onder die potgrond in die plantbak.

Because die is the Afrikaans definite article, meaning the.

Afrikaans uses die for:

• singular nouns
• plural nouns
• all grammatical genders

So unlike languages that change the depending on gender or case, Afrikaans keeps it simple:

• die pot = the pot
• die plantbak = the planter
• die dreineringsgat = the drainage hole

In this sentence, each noun phrase is definite, so die appears before each one.

Dreineringsgat is a compound noun. It means drainage hole.

It is built from:

• dreinering = drainage
• gat = hole

In Afrikaans, compound nouns are very common, just like in English. The last part is usually the main thing:

• gat = the main noun, so it is a kind of hole
• dreinering tells you what kind of hole it is

So dreineringsgat literally means drainage-hole.

That -s- is a linking sound/letter often used in Afrikaans compounds.

So instead of:

• dreineringgat

you get:

• dreineringsgat

This kind of linking -s- is common, although it is not something you can always predict perfectly just from logic. It is best learned together with the word. English has something similar in some compound-like forms, though not as regularly.

Potgrond means potting soil or potting mix.

It is also a compound:

• pot = pot
• grond = soil/ground

So potgrond is literally pot-soil, meaning the soil used in a flowerpot or planter.

Plantbak means something like planter, plant box, or plant container, depending on context.

It is made from:

• plant = plant
• bak = container / tray / box / tub

So a plantbak is a container that plants grow in.

This means:

• onder die potgrond = under the potting soil
• in die plantbak = in the planter

Afrikaans often places location phrases one after another like this. The second phrase gives extra information about where that soil is.

So the structure is basically:

• The drainage hole
• is
• under the potting soil
• in the planter

In natural English, we would also say:

• The drainage hole is under the potting soil in the planter.

It mainly helps locate the whole situation, but in practice it most naturally tells you where the potgrond is: the potting soil is in the planter, and the drainage hole is under that soil.

So the meaning is understood as:

• there is a planter
• inside it is potting soil
• the drainage hole is below that soil

In other words, in die plantbak attaches naturally to the location being described, not necessarily only to one single word.

Afrikaans main clauses usually follow a verb-second pattern.

Here the sentence starts with the subject:

• Die dreineringsgat = subject

Then comes the verb:

• is

Then the rest:

• onder die potgrond in die plantbak

So:

• Die dreineringsgat | is | onder die potgrond in die plantbak.

This is very normal Afrikaans word order.

Yes. Afrikaans allows some movement for emphasis, especially with time or place phrases.

For example, you could also say:

• Onder die potgrond in die plantbak is die dreineringsgat.

That is grammatical, but it sounds more marked or emphasis-driven, like:

• Under the potting soil in the planter is the drainage hole.

The original version is the most neutral and straightforward.

Because Afrikaans does not use grammatical gender in its article system the way languages like Dutch or German do.

So you do not have to learn separate forms like:

• masculine the
• feminine the
• neuter the

You simply use die for definite nouns. This is one reason Afrikaans grammar is often easier for English speakers than some other European languages.

A rough guide is:

• Die ≈ dee
• dreineringsgat ≈ dray-nuh-rings-khat
• is ≈ iss
• onder ≈ on-der
• die ≈ dee
• potgrond ≈ pot-khront
• in ≈ in
• die ≈ dee
• plantbak ≈ plahnt-buk

A few notes:

• Afrikaans g is usually a guttural sound, not the English g in go
• r is often trilled or tapped more than in many English accents
• die is pronounced like dee, not like English die

In Afrikaans, the last part of the compound is usually the main noun.

For example:

• dreineringsgat → a kind of gat (hole)
• potgrond → a kind of grond (soil)
• plantbak → a kind of bak (container)

This is very useful when reading long Afrikaans words. If you look at the end first, you can often figure out the general category of the thing being described.