Síť většinou funguje.

It can be both. In this sentence, většinou means usually, most of the time, or for the most part. It suggests that the network works in most cases, but not always.

So the idea is:

• Síť vždy funguje = the network always works
• Síť většinou funguje = the network usually works
• Síť nefunguje = the network does not work

This is a good question because většinou originally comes from the noun většina, meaning majority. Historically, většinou is the instrumental form of that noun, but in modern Czech it is very commonly used as an adverb meaning mostly / usually.

For a learner, the easiest approach is: just learn většinou as a fixed everyday adverb.

Fungovat is the infinitive, meaning to function / to work. In a real sentence, Czech needs a conjugated verb, so here we use funguje, which is the 3rd person singular present form.

Because síť is singular, the verb is singular too:

• síť funguje = the network works

In this sentence, funguje is the 3rd person singular present tense form of fungovat.

That means it matches subjects like:

• on funguje = he/it works
• ona funguje = she/it works
• ono funguje = it works
• síť funguje = the network works

So here, the ending tells you that the subject is one thing, not multiple things.

Síť is in the nominative singular, because it is the subject of the sentence.

The basic structure is:

• síť = subject
• většinou = adverb
• funguje = verb

So literally the grammar is: Network usually works.

Síť is a feminine noun.

That matters because in other sentences, adjectives and some past-tense forms will agree with it as feminine.

For example:

• dobrá síť = a good network
• síť fungovala = the network was working / worked

So even though English uses it, Czech treats síť as grammatically feminine.

Because Czech does not have articles like English a and the.

So Síť většinou funguje could mean:

• The network usually works
• A network usually works

Which one is meant depends on the context. Czech leaves that unstated.

Yes. Czech word order is flexible.

Síť většinou funguje is a very natural, neutral order.

You could also say:

• Většinou síť funguje

That puts more emphasis on většinou.

In Czech, changing word order often changes focus or emphasis, not the basic meaning. For a learner, the original sentence is a very safe and natural version.

Síť is pronounced roughly like seet', with:

• sí- = a long ee sound
• -ť = a soft t

The letter ť is not the same as a plain English t. It is a softened consonant. You do not need to make it perfect immediately, but it should sound softer than a normal t.

Also, Czech stress is normally on the first syllable, so the word is stressed on sí.

Yes, absolutely. Fungovat is extremely common in Czech for things like:

• machines
• devices
• software
• networks
• systems
• services
• plans

So Síť funguje sounds completely natural for the network works / is functioning.

Czech uses fungovat in many places where English would simply say work.

No. Síť is a broader word. Depending on context, it can mean:

• network
• net
• mesh
• sometimes part of expressions like power grid or transport network

So the exact English translation depends on the situation. In a technical context, síť very often means network.

Yes. Obvykle is also a good word for usually.

The difference is roughly this:

• většinou = mostly / usually / in most cases
• obvykle = usually / typically

In many situations they are very close. Většinou can feel a little more like in most cases, while obvykle can sound a bit more neutral or slightly more formal.