K večeři si dám salát z okurky a rajčete.

Dát si is a very common Czech expression meaning to have, to eat, or to drink, depending on context.

So in this sentence, si dám salát means something like:

• I’ll have a salad
• I’m going to have a salad

The little word si is a reflexive clitic, but in expressions like dát si it often does not feel strongly reflexive in English. It adds the sense of having something for oneself.

Compare:

• Dám si kávu. = I’ll have a coffee.
• Dám si pivo. = I’ll have a beer.

So it is best to learn dát si as a set phrase.

Because dát is a perfective verb.

In Czech, perfective verbs usually use their present-tense forms to express a future action. So:

• dám literally looks like I give
• but with a perfective verb it means I will have / I will take

That is why si dám salát means I’ll have a salad, not I am having a salad right now.

If you wanted a more ongoing or habitual idea, Czech would use an imperfective verb instead.

The preposition k takes the dative case, and in this expression k večeři means for dinner.

This is a very common Czech pattern:

• k snídani = for breakfast
• k obědu = for lunch
• k večeři = for dinner

It does not mean physical movement here. It expresses the meal or occasion something is intended for.

So K večeři si dám... is literally something like For dinner, I’ll have...

Because k requires the dative case.

The dictionary form is:

• večeře = dinner

After k, it changes to the dative singular:

• k večeři = for dinner

So this is a case change triggered by the preposition.

Because the preposition z here means from / made of, and it requires the genitive case.

So:

• okurka → z okurky
• rajče → z rajčete

That is why both nouns change form.

In this sentence, salát z okurky a rajčete means a salad made from cucumber and tomato.

Czech often uses the singular when talking about ingredients in a general sense.

So:

• salát z okurky a rajčete = salad made from cucumber and tomato

This sounds natural in Czech, even though English often prefers plural wording in similar contexts.

That said, you may also hear plural forms in real life, such as:

• salát z okurek a rajčat

This can sound a bit more like a salad made from cucumbers and tomatoes as ingredients in quantity.

Both ideas are understandable; the singular here is perfectly normal.

Because rajče is the basic form, but after z it must go into the genitive singular.

The noun changes like this:

• rajče = tomato
• bez rajčete = without a tomato
• z rajčete = from tomato

So rajčete is simply the correct case form.

Because Czech has no articles.

So Czech does not have direct equivalents of a, an, and the in normal usage.

That means:

• salát can mean a salad or the salad
• the exact meaning depends on context

In this sentence, English naturally uses a salad, but Czech just says salát.

Yes. Czech word order is much more flexible than English word order.

The sentence:

• K večeři si dám salát z okurky a rajčete.

is natural and puts for dinner near the front, which helps set the scene.

Other possible orders include:

• Salát z okurky a rajčete si dám k večeři.
• Si dám k večeři salát z okurky a rajčete. (possible in context, but less neutral as a standalone sentence)

The meaning stays similar, but the emphasis changes. Czech word order often reflects topic and focus, not just grammar.

It is usually closer to I’ll have.

That is an important nuance. Dát si is very common when choosing food or drink:

• Dám si polévku. = I’ll have soup.
• Dáš si čaj? = Will you have tea?

It can refer to eating or drinking, but it often sounds like choosing/ordering/deciding to have something, rather than simply describing the physical act of eating.

So in many contexts, I’ll have a cucumber and tomato salad for dinner is the most natural English equivalent.

Yes, it is natural.

It sounds like a normal way to say what someone plans to have for dinner. The structure is very typical:

• K večeři = for dinner
• si dám = I’ll have
• salát z... = a salad made from...

A Czech speaker might also say similar things like:

• K večeři si dám těstoviny.
• K večeři si dám polévku.

So this sentence is a good example of everyday Czech.