Szefowa powiedziała, że tabela jest dobra, ale wykres trzeba jeszcze poprawić.

Szefowa means female boss/manager, while szef means male boss/manager.

Polish nouns usually have grammatical gender, and words for people often match the person’s real gender. So if the boss is a woman, szefowa is natural.

Compare:

• Szefowa powiedziała = The female boss said
• Szef powiedział = The male boss said

In the past tense, Polish verbs agree with the subject in gender and number.

Here the subject is szefowa, which is feminine singular, so the verb is powiedziała.

Compare:

• powiedział = he said
• powiedziała = she said
• powiedzieli = they said, if the group is masculine-personal or mixed
• powiedziały = they said, if the group is all female or non-masculine-personal

So szefowa powiedziała is the correct match.

Że means that and introduces a subordinate clause.

So:

• Szefowa powiedziała, że... = The boss said that...

It is one of the most common ways to report what someone said, thought, knew, etc.

Examples:

• Wiem, że... = I know that...
• Myślę, że... = I think that...
• Powiedziała, że... = She said that...

Because standard Polish punctuation requires them here.

• A comma is normally used before że when it introduces a subordinate clause.
• A comma is also normally used before ale, which means but.

So this punctuation is fully standard:

• Szefowa powiedziała, że...
• ..., ale...

Polish tends to use commas a bit more systematically than English in structures like this.

Because adjectives in Polish must agree with the noun in gender, number, and case.

Tabela is feminine singular, so the adjective must also be feminine singular:

• dobra

Compare:

• dobry wykres = a good graph masculine
• dobra tabela = a good table feminine
• dobre zdjęcie = a good photo neuter

So:

• tabela jest dobra = correct
• tabela jest dobry = incorrect

It is the direct object of poprawić, so it is in the accusative case. But for many masculine inanimate nouns, the accusative singular looks exactly the same as the nominative singular.

That is what happens with wykres:

• nominative: wykres
• accusative: wykres

So the form does not visibly change.

Compare that with a feminine noun like tabela:

• nominative: tabela
• accusative: tabelę

That is why you can see a difference in some nouns but not in wykres.

Trzeba is an impersonal word meaning something like:

• it is necessary
• one has to
• it needs to be done

In this sentence:

• wykres trzeba jeszcze poprawić

the idea is that the graph still needs to be corrected/improved.

There is no explicit subject like someone. Polish often uses trzeba + infinitive to express general necessity.

Examples:

• Trzeba iść = We have to go / One has to go
• Trzeba to zrobić = This needs to be done

Because trzeba is normally followed by an infinitive.

So:

• trzeba poprawić = it is necessary to correct / improve
• trzeba sprawdzić = it is necessary to check
• trzeba poczekać = it is necessary to wait

This is a very common Polish pattern:

• trzeba + infinitive

This is about verbal aspect.

• poprawić is perfective
• poprawiać is imperfective

Here poprawić is natural because the sentence refers to completing a correction or improvement of the graph. The focus is on getting the job done.

Very roughly:

• poprawić = correct/fix it up successfully, to completion
• poprawiać = be correcting / keep correcting / do correction as a process

After trzeba, both aspects are possible in some contexts, but they mean different things:

• trzeba poprawić wykres = the graph needs to be corrected
• trzeba poprawiać wykres = one needs to work on correcting the graph, more process-oriented

In this sentence, the perfective form sounds more natural.

Here jeszcze means something like:

• still
• yet
• further
• a bit more

So trzeba jeszcze poprawić suggests that the graph is not ready yet and needs some more work.

Depending on context, natural English translations could be:

• still needs correcting
• needs to be corrected a bit more
• still needs improvement

Because Polish does not automatically shift tenses backward the way English often does in reported speech.

So if the content of what was said is still true or presented as true now, Polish can keep the present tense:

• powiedziała, że tabela jest dobra

This is very normal in Polish.

English often says:

• She said that the table was good

But Polish commonly keeps:

• powiedziała, że tabela jest dobra

The same thing happens later in the sentence with trzeba poprawić. The boss said this in the past, but the content of her statement is still presented as current.

Polish word order is fairly flexible, though the version in the sentence is very natural and neutral.

This order:

• Szefowa powiedziała, że tabela jest dobra, ale wykres trzeba jeszcze poprawić

works well because it clearly contrasts:

• tabela = good
• wykres = still needs work

You could change the order for emphasis, for example:

• ...ale jeszcze trzeba poprawić wykres
• ...ale trzeba jeszcze poprawić wykres

These are possible, but they may shift the focus slightly. The original sentence sounds smooth and standard.

Because Polish has no articles like a or the.

So:

• tabela can mean a table or the table
• wykres can mean a graph or the graph

The exact meaning depends on context.

In this sentence, context makes it clear that we are talking about a specific table and a specific graph, so English naturally uses the, but Polish does not need any article at all.