Stap jy vandag saam met ons?

Because this is a yes/no question. In Afrikaans, the finite verb usually comes first in this kind of question.

• Statement: Jy stap vandag saam met ons. = You are walking with us today.
• Question: Stap jy vandag saam met ons? = Are you walking with us today?

This is similar to English word order in Are you coming?, where the verb comes before the subject.

Afrikaans does not usually use do-support the way English does.

In English, you often need do to form a question:

• Do you walk with us today?

In Afrikaans, you simply move the verb to the front:

• Stap jy vandag saam met ons?

So stap itself carries the meaning, and no extra helper like do is needed.

Stap usually means walk or step. In this sentence, it most naturally means walk.

So the sentence is asking whether the person is walking together with us today.

Depending on context, stap can sound:

• literally like walking on foot
• a bit like come along walking with us

It does not normally mean a general go unless the context clearly involves walking.

Saam met is a very common Afrikaans expression meaning together with.

• saam = together
• met = with

So:

• met ons = with us
• saam met ons = together with us

In this sentence, saam met ons emphasizes that the person is joining the group, not just accompanying in a vague way.

Vandag means today, and its position here is very natural in Afrikaans.

The sentence structure is:

• Stap = verb
• jy = subject
• vandag = time expression
• saam met ons = rest of the phrase

So after the verb-first question structure, the subject jy comes next, and then vandag fits neatly after it.

You may sometimes hear different word orders for emphasis, but Stap jy vandag saam met ons? is a very standard, natural version.

In Afrikaans, ons can mean both we and us.

Examples:

• Ons stap. = We walk.
• met ons = with us

So unlike English, Afrikaans does not change the form here. After the preposition met, ons still stays ons.

Yes. Jy is the usual informal singular word for you.

Other possibilities are:

• julle = you plural
• u = formal or polite singular/plural in some contexts

Examples:

• Stap julle vandag saam met ons? = Are you all walking with us today?
• Stap u vandag saam met ons? = Are you walking with us today? (formal)

So jy is used when speaking to one person in a normal informal way.

Both can occur, but they are not always equally natural in every sentence.

• saam met ons is the most straightforward and common choice here.
• met ons saam is also possible in Afrikaans, especially in certain rhythms or emphatic contexts.

For a learner, saam met ons is the safest and most standard pattern to use in a sentence like this:

• Stap jy vandag saam met ons?

A rough pronunciation guide for an English speaker:

• Stap ≈ stahp
• jy ≈ something like yay or yey, but shorter
• vandag ≈ fun-DAKH or fun-DAKH
  The g is the throaty Afrikaans sound.
• saam ≈ sahm
• met ≈ met
• ons ≈ ons with a rounded o, not exactly like English on

A key point:

• j in Afrikaans usually sounds like English y
• g is often a throaty sound that English does not really have

Yes, it sounds completely natural.

It is a simple, everyday question someone might ask when checking whether another person is joining a walk:

• Stap jy vandag saam met ons?

It sounds conversational, clear, and idiomatic.