Byl unavený, přesto pokračoval.

Byl is the past tense of být (to be) for a masculine singular subject.

So:

• je unavený = he is tired
• byl unavený = he was tired

Czech past tense often uses a past participle-like form that agrees with the subject, so byl tells you the subject is singular masculine.

Unavený is an adjective meaning tired, and it must agree with the person being described.

Here it is masculine singular, because the implied subject is masculine singular.

Some other forms are:

• unavený = masculine singular
• unavená = feminine singular
• unavené = neuter singular / feminine plural in some contexts
• unavení = masculine animate plural

So if the subject were a woman, you would say:

• Byla unavená, přesto pokračovala.

Czech often omits personal pronouns when the subject is clear from the verb form or context. This is very normal.

So:

• Byl unavený already suggests he was tired
• pokračoval already suggests he continued

Adding on is possible, but it is usually only used for emphasis, contrast, or clarity.

For example:

• On byl unavený, přesto pokračoval.
  = He was tired, yet he continued.

This sounds more emphatic than the original.

Přesto means something like:

• nevertheless
• still
• even so
• despite that
• yet

In this sentence, it shows contrast: he was tired, but that did not stop him.

So:

• Byl unavený, přesto pokračoval.
  = He was tired; nevertheless, he continued.

It is a slightly more formal or literary-sounding alternative to a simple but.

Both can express contrast, but they are not exactly the same.

• ale = but
• přesto = nevertheless / even so / still

Compare:

• Byl unavený, ale pokračoval.
  = He was tired, but he continued.
• Byl unavený, přesto pokračoval.
  = He was tired; nevertheless, he continued.

Přesto usually feels a bit stronger and more explicit: it highlights that the second action happened despite the first fact.

Pokračoval is the past tense of pokračovat, which means:

• to continue
• to carry on
• to keep going

So pokračoval means:

• he continued
• he kept going

It is masculine singular past tense, matching the same implied subject as byl.

If the subject were feminine:

• pokračovala = she continued

The comma separates two clauses:

• Byl unavený
• přesto pokračoval

In Czech, commas are used quite regularly to separate clauses, and here the comma helps mark the contrast between the two parts.

In English, you might write:

• He was tired, yet he continued.
• He was tired; nevertheless, he continued.

So the comma in Czech is very natural here.

Yes. Czech word order is fairly flexible, and changing it can shift the emphasis.

The original:

• Byl unavený, přesto pokračoval.

A different order:

• Byl unavený, pokračoval přesto.

This is possible, but it sounds less neutral and may place more emphasis on přesto.

You could also start with Přesto in a larger context, for example:

• Přesto pokračoval.
  = Nevertheless, he continued.

The original sentence is a very natural, neutral way to say it.

It is often treated as an adverb or a connective adverb rather than a basic conjunction like a (and) or ale (but).

That is why it behaves a little differently from a simple coordinating conjunction. It connects the second clause to the first in meaning, but it is not exactly the same type of word as ale.

That is also why the sentence can feel a bit like:

• He was tired. Nevertheless, he continued.

compressed into one sentence.

The past-tense verb forms and the adjective must agree with the subject.

For a woman:

• Byla unavená, přesto pokračovala.

For a group of men or a mixed group:

• Byli unavení, přesto pokračovali.

For a group of women:

• Byly unavené, přesto pokračovaly.

So both the verb and the adjective change to match gender and number.

It is mostly neutral, but přesto makes it sound a bit more polished or literary than the very everyday ale.

Compare:

• Byl unavený, ale pokračoval.
  = more everyday
• Byl unavený, přesto pokračoval.
  = slightly more formal or stylistically stronger

So the sentence is completely natural, but it may sound a little more elegant than plain casual speech.

A rough guide is:

• přesto ≈ PRZES-toh

The hardest part for English speakers is př.

A few notes:

• ř is a special Czech sound, something between r and zh.
• e is like e in met
• o is a clear short o

You do not need perfect ř right away; that sound takes time. Even many learners who speak Czech well need a lot of practice with it.