Teyzem kahvaltı için kaşar da getirmiş olmalı; buzdolabının üst rafı dolu.

Teyzem means my maternal aunt.

• teyze = maternal aunt
• -m = my

So:

• teyze → aunt (mother’s sister)
• teyzem → my aunt (specifically my mother’s sister)

This is worth noticing because Turkish often uses more specific family words than English:

• teyze = maternal aunt
• hala = paternal aunt

So teyzem is not just any aunt.

Kaşar is a kind of cheese. In everyday Turkish, people often just say kaşar instead of kaşar peyniri.

So in this sentence, kaşar da getirmiş means she must have brought kaşar cheese too / as well.

İçin means for.

So:

• kahvaltı = breakfast
• kahvaltı için = for breakfast

Here it shows purpose or intended use: the cheese was brought for breakfast.

A useful point: nouns before için are often left in their basic form:

• kahvaltı için = for breakfast
• senin için = for you
• çocuklar için = for the children

Here da means also / too / as well.

So kaşar da getirmiş olmalı suggests that she brought kaşar in addition to something else.

For example, the implied idea might be:

• She brought bread, olives, etc.
• And she must have brought cheese too.

A very important spelling point:

• the particle da/de meaning also is written separately
• the locative suffix -da/-de meaning in/on/at is written attached

So:

• kaşar da = cheese too
• dolapta = in the cupboard

Because this da/de follows vowel harmony.

The last vowel in kaşar is a, which is a back vowel, so the form is da:

• kaşar da

If the previous word had a front vowel, it would usually be de:

• peynir de

Unlike the locative suffix -da/-de/-ta/-te, this also particle stays d, not t.

Getirmiş olmalı means must have brought.

It expresses an inference: the speaker did not directly witness the action, but concludes it from evidence.

In this sentence, the evidence is:

• buzdolabının üst rafı dolu = the top shelf of the fridge is full

So the logic is:

• The top shelf is full.
• Therefore, my aunt must have brought kaşar too.

This is stronger than maybe or perhaps. It is a fairly confident guess based on evidence.

Because getirmeli means something different.

• getirmeli = should bring / ought to bring
• getirmiş olmalı = must have brought

So:

• getirmeli expresses obligation
• getirmiş olmalı expresses deduction about a past completed action

That -miş is important because it helps place the action in the completed past and fits the idea of inference.

Compare:

• Teyzem kaşar getirmeli. = My aunt should bring kaşar.
• Teyzem kaşar getirmiş olmalı. = My aunt must have brought kaşar.

This is a very typical Turkish noun phrase.

It means the top shelf of the refrigerator.

Breakdown:

• buzdolabı = refrigerator
• buzdolabının = of the refrigerator
• üst rafı = its top shelf / the upper shelf

So the whole phrase is:

• buzdolabının üst rafı
• literally: the refrigerator’s top shelf

Why does raf become rafı?

Because Turkish often marks the second noun in this kind of possessive relationship with a possessive ending:

• dolabın kapısı = the cupboard’s door
• evin çatısı = the house’s roof
• buzdolabının üst rafı = the refrigerator’s top shelf

Because Turkish often uses a zero copula in the present tense.

So:

• buzdolabının üst rafı dolu
• literally: the refrigerator’s top shelf full
• natural English: the top shelf of the refrigerator is full

This is completely normal in Turkish.

More examples:

• Kapı açık. = The door is open.
• O mutlu. = She/He is happy.
• Oda temiz. = The room is clean.

If you wanted past tense, Turkish would show it:

• Buzdolabının üst rafı doluydu. = The top shelf of the refrigerator was full.

Because Turkish usually places the predicate at the end of the clause.

In buzdolabının üst rafı dolu:

• buzdolabının üst rafı = subject/topic
• dolu = predicate adjective

So the structure is basically:

• [top shelf of the fridge] [full]

That final position is very normal in Turkish.

The first clause is the conclusion, and the second clause gives the evidence.

• Teyzem kahvaltı için kaşar da getirmiş olmalı = My aunt must have brought kaşar for breakfast too.
• buzdolabının üst rafı dolu = the top shelf of the refrigerator is full.

So the meaning is roughly:

• She must have brought cheese too; look, the top shelf is full.

The semicolon is just a punctuation choice showing a close connection between the two ideas. In speech, you would usually hear a pause.

Yes, and if it moves, the meaning changes.

In Turkish, da/de attaches to the word that is being interpreted as also/too.

Here:

• kaşar da = kaşar too

If you changed the position, the emphasis would change:

• Teyzem de... = my aunt too...
• kahvaltı için de... = for breakfast too...
• kaşar da... = kaşar too...

So in the original sentence, the thing being added is specifically kaşar. That is why da is attached to kaşar.