Bota je na mé noze.

Because the preposition na uses different cases depending on meaning.

Here it means location/position (on), so Czech uses the locative case:

• noha = nominative singular, the dictionary form
• na noze = on the foot/leg, locative singular

A very useful contrast is:

• na noze = on the foot / located there
• na nohu = onto the foot, with movement

So noze is there because na + location = locative.

Because my in Czech changes form to match the noun’s gender, number, and case.

The basic possessive pronoun is můj. Its forms change:

• má noha = my leg/foot (nominative)
• na mé noze = on my foot/leg (locative)

Here noze is:

• feminine
• singular
• locative

So the possessive pronoun must match that, and mé is the correct standard form.

You may also hear:

• na mojí noze

That is also common and acceptable. But na mé noze is perfectly standard and a bit more compact.

Bota is in the nominative singular.

It is the subject of the sentence — the thing that is somewhere:

• Bota = the shoe
• je = is
• na mé noze = on my foot

So the structure is basically:

• subject
  • verb
    • location

Because Czech has no articles.

So bota can mean:

• a shoe
• the shoe

Context tells you which one is meant.

This is very normal in Czech, and English speakers often need time to get used to it. Czech usually leaves definiteness unstated unless it really matters.

Because na is the normal preposition for something being on a surface or attached/positioned on something.

A shoe is understood as being on the foot, so:

• na noze = on the foot

Compare:

• v botě = in the shoe
• u nohy = by the foot / near the foot

So na is the natural choice for this relationship.

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

The sentence:

• Bota je na mé noze.

is a neutral way to say it.

But you could also say:

• Na mé noze je bota.

That version puts more focus on where the shoe is.

Because Czech uses case endings, the grammatical roles are clearer even when the order changes. Word order is often used to show emphasis, topic, or new information, not just grammar.

In a normal full sentence like this, je should stay.

• Bota je na mé noze. = correct standard sentence

Czech sometimes omits forms of to be in special situations such as:

• headlines
• notes
• very informal fragments

But in ordinary speech and writing, you normally keep je here.

Yes. In everyday Czech, noha can refer to the whole lower limb, and context tells you whether leg or foot is meant.

So:

• na noze can mean on the leg or on the foot, depending on context

In this sentence, because we are talking about a shoe, the meaning is naturally understood as foot.

If someone wants to be more anatomically specific, Czech has words like:

• chodidlo = foot/sole area

But in normal everyday language, noha is very common for both.

Yes, it is grammatical and understandable.

It sounds most natural in a situation where you are talking about one shoe on one foot specifically. For example, maybe someone has only put one shoe on, or you are describing a particular shoe.

If you were talking more generally about wearing shoes, Czech might more often use other phrasing, depending on context. But as a sentence for learning grammar, Bota je na mé noze. is completely fine.

This sentence is a good example of three important Czech patterns:

1. Prepositions control case

   • na
     • location → locative
   • therefore noha becomes noze

2. Possessive pronouns decline

   • můj changes form
   • here it becomes mé to match noze

3. The subject stays in nominative

   • bota is the subject, so it stays nominative

So this one short sentence teaches:

• noun case endings
• pronoun agreement
• normal sentence structure with být (to be)