Sy glo dat hoender en rys genoeg is vir vanaand.

Here sy means she.

Afrikaans sy can also mean his, but the sentence structure makes the meaning clear. Because sy comes before the verb glo, it is the subject of the sentence, so it means she.

• Sy glo ... = She believes ...
• sy boek = his book

So context is very important with sy.

Dat means that and introduces a subordinate clause.

So:

• Sy glo = She believes
• dat hoender en rys genoeg is vir vanaand = that chicken and rice is enough for tonight

Just like in English, that can introduce what someone believes, thinks, says, or knows.

In standard Afrikaans, using dat here is very normal and clear.

Because dat creates a subordinate clause, and in Afrikaans subordinate clauses usually send the finite verb to the end.

Compare:

• Main clause: Hoender en rys is genoeg vir vanaand.
• Subordinate clause: ... dat hoender en rys genoeg is vir vanaand.

So after dat, the verb is moves later in the clause. This is one of the most important word-order patterns in Afrikaans.

Afrikaans is different from English here. The present tense of wees (to be) uses is for all persons and numbers.

So you get:

• ek is = I am
• jy is = you are
• hy/sy is = he/she is
• ons is = we are
• hulle is = they are

So even with more than one thing, Afrikaans still uses is.

Because the sentence is talking about food in a general sense, not specific individual items.

So:

• hoender en rys = chicken and rice
• die hoender en die rys = the chicken and the rice

Without die, it sounds like a general meal idea: chicken and rice. That is very natural in Afrikaans, just as in English.

It can mean either, depending on context.

• Die hoender loop in die tuin. = The chicken is walking in the garden.
• Ons eet hoender vir aandete. = We are eating chicken for dinner.

In your sentence, hoender clearly means chicken as food, because it is paired with rys and the sentence is about whether it is enough for tonight.

Genoeg means enough.

It does not change form. Afrikaans uses the same word in different situations:

• genoeg kos = enough food
• Die kos is genoeg. = The food is enough.

In this sentence, genoeg is describing the idea of hoender en rys as being sufficient.

So:

• hoender en rys genoeg is = chicken and rice is enough

Vir vanaand means for tonight.

• vir = for
• vanaand = tonight / this evening

The phrase tells you what the chicken and rice are enough for: tonight's meal or tonight's needs.

If you removed vir, the meaning would shift a little. Vir vanaand makes the purpose very explicit: it is enough for tonight.

Yes, especially in more informal or conversational Afrikaans.

You could also say:

Sy glo hoender en rys is genoeg vir vanaand.

That version is very natural in speech. When dat is omitted, the clause often keeps more normal main-clause word order:

• with dat: ... genoeg is ...
• without dat: ... is genoeg ...

Both are understandable, but the version with dat is especially clear and textbook-friendly.

Vanaand usually covers the idea of tonight or this evening, depending on context.

So in this sentence, vir vanaand could be understood as:

• for tonight
• for this evening

In everyday use, English may choose either wording depending on the situation, but vanaand is the normal Afrikaans word here.