Die tenk is vol.

Yes. In Afrikaans, die is the normal definite article, meaning the.

So:

• die tenk = the tank

It is unrelated to the English verb die in this sentence.
Also, Afrikaans uses die for singular and plural nouns:

• die tenk = the tank
• die tenks = the tanks

A useful pronunciation tip: Afrikaans die is usually pronounced more like dee, not like the English verb die.

A simple learner-friendly pronunciation is:

dee tenk is fol

A bit more precisely:

• die → dee
• tenk → like English tank, but with a short e sound, closer to tenk
• is → like iss
• vol → roughly fol, with a short o

So the full sentence sounds approximately like:

dee tenk iss fol

Basically, yes. Tenk is a loanword related to English tank.

In many contexts, tenk can mean a tank such as:

• a fuel tank
• a storage tank
• a water tank

Depending on context, it can also refer to a military tank, although context usually makes the meaning clear.

So in Die tenk is vol, tenk is simply the noun meaning tank.

Because this is a normal Afrikaans main clause with the standard pattern:

subject + verb + complement

Here:

• Die tenk = subject
• is = verb
• vol = complement/adjective

So:

• Die tenk → the tank
• is → is
• vol → full

This is very similar to English:

• The tank is full.

Vol is an adjective here, meaning full.

It comes after is because it describes the subject:

• Die tenk is vol. = The tank is full.

This is called predicative use of the adjective: the adjective comes after a linking verb like is.

Because in this sentence the adjective comes after the verb is.

In Afrikaans, adjectives used after a linking verb usually stay in their basic form:

• Die tenk is vol.
• Die water is koud.
• Die huis is groot.

But when an adjective comes before a noun, it often takes -e:

• die volle tenk = the full tank
• die koue water = the cold water
• die groot huis = the big house

So:

• Die tenk is vol. = the tank is full
• die volle tenk = the full tank

Yes, but it means something different:

• Die tenk is vol. = The tank is full.
• 'n tenk is vol. = A tank is full.

The first refers to a specific tank.
The second refers to some tank, not a specific one.

Also remember that 'n is the Afrikaans indefinite article meaning a/an, and it is usually pronounced like a weak uh sound.

The normal negative is:

Die tenk is nie vol nie.

Afrikaans usually uses a double nie pattern:

• one nie after the verb phrase or important information
• one nie at the end of the clause

So:

• Die tenk is vol. = The tank is full.
• Die tenk is nie vol nie. = The tank is not full.

This double negative structure is very common in Afrikaans.

Yes. Vol often means full, but depending on context it can also mean things like:

• crowded / packed
• filled up
• sometimes drunk in informal speech

For example:

• Die bus is vol. = The bus is full/crowded.
• Hy is vol. = He is drunk. (informal)

In Die tenk is vol, the meaning is the straightforward physical one: the tank is full.

Yes, very often.

Is is the present tense form of wees (to be) and works much like English is:

• Die tenk is vol. = The tank is full.
• Die water is koud. = The water is cold.

So if you know how English uses is with adjectives, this sentence should feel very familiar.

You would say:

die volle tenk

Compare the two patterns:

• Die tenk is vol. = The tank is full.
• die volle tenk = the full tank

This is a very useful distinction:

• after the verb → vol
• before the noun → volle

The punctuation here works just like in English.
Die tenk is vol. is a complete statement, so it ends with a period.

Afrikaans punctuation is generally very similar to English punctuation in simple sentences like this one.