Στο ψυγείο έχουμε ακόμα σταφύλια, όμως το καρπούζι τελείωσε χτες.

Στο ψυγείο means in the fridge.

It is a contraction of:

• σε = in / at / to
• το = the

So:

• σε το → στο

This contraction is very common in Greek. So Στο ψυγείο literally means in the refrigerator / in the fridge.

Greek word order is more flexible than English word order. Starting with Στο ψυγείο puts the location first, almost like setting the scene:

• In the fridge, we still have grapes...

This sounds natural in Greek and often helps emphasize where the items are. English can do this too, but Greek uses this kind of fronting more freely.

The sentence could also be said in a different order, such as:

• Έχουμε ακόμα σταφύλια στο ψυγείο...

But the original version sounds very natural.

In Greek, έχουμε is often used in everyday speech to mean we have available / there are some left for us / we’ve got.

So:

• Στο ψυγείο έχουμε ακόμα σταφύλια
  = We still have grapes in the fridge = There are still grapes in the fridge

English often prefers there are, but Greek commonly uses we have in this kind of household context.

It gives the sense of we have some left rather than just stating existence.

Without the article, σταφύλια means grapes in a general or indefinite sense, often like some grapes.

So:

• έχουμε ακόμα σταφύλια = we still have grapes / some grapes left

If you said τα σταφύλια, it would sound more specific:

• we still have the grapes

That would usually refer to a known, specific set of grapes already mentioned or understood from context.

So the lack of article here is natural and means the speaker is talking about grapes as an available food item, not a specially identified batch.

Here ακόμα means still.

So:

• έχουμε ακόμα σταφύλια = we still have grapes

In other contexts, ακόμα can also mean even or yet, depending on the sentence, but here still is the correct meaning.

Όμως means but / however.

In this sentence:

• ..., όμως το καρπούζι τελείωσε χτες.
• ..., but the watermelon ran out yesterday.

Both όμως and αλλά can mean but, but there is a slight difference in tone:

• αλλά = the most basic everyday but
• όμως = often a little more like however / though, sometimes slightly more emphatic or stylistically smoother

In many everyday sentences, either could work.

Here το καρπούζι means the watermelon — a specific watermelon that both speaker and listener can identify from context.

This suggests something like:

• there was a watermelon in the fridge
• now it is gone

Greek uses the definite article very often, and in this sentence it points to a specific item, not watermelon in general.

Here τελείωσε means something like:

• ran out
• was finished
• got used up
• is gone

Literally, τελειώνω / τελείωσα is related to finish. But in Greek, this verb can be used intransitively, so the thing itself can finish / come to an end.

So:

• το καρπούζι τελείωσε χτες = the watermelon ran out yesterday = the watermelon was finished yesterday = we finished the watermelon yesterday (depending on context)

The most natural English translation here is usually the watermelon ran out yesterday or the watermelon was gone by yesterday.

Because Greek commonly allows this verb to work in a way English usually does not.

In English, the watermelon finished sounds odd. We would normally say:

• the watermelon was finished
• we finished the watermelon
• the watermelon ran out

But Greek can naturally say:

• το καρπούζι τελείωσε

where the item itself is treated as having come to an end.

This is a normal Greek pattern and not something you should translate word-for-word into English.

Because of χτες = yesterday.

Τελείωσε is the aorist form, which is typically used for a completed event in the past.

So:

• τελείωσε χτες = it finished / ran out yesterday

That means the watermelon was used up at some point yesterday, as a completed event.

Yes. Χτες means yesterday.

You may also see:

• χθες

Both mean the same thing. In general:

• χτες is very common in everyday language
• χθες can look a bit more formal or conservative in spelling

So in this sentence, χτες is perfectly normal and natural.

Yes. The sentence sets up a contrast:

• we still have grapes
• but the watermelon is gone

This makes the food situation clear:

• one item is still available
• one item has run out

The use of ακόμα and όμως strengthens that contrast:

• ακόμα = still
• όμως = but / however

So the sentence is not just listing fruit; it is comparing what remains and what does not.

A very literal translation would be:

• In the fridge we still have grapes, however the watermelon finished yesterday.

That helps show the Greek structure, but it is not natural English.

More natural English translations would be:

• There are still grapes in the fridge, but the watermelon ran out yesterday.
• We still have grapes in the fridge, but the watermelon was finished yesterday.
• We still have grapes in the fridge, but we finished the watermelon yesterday.
  (possible depending on context)

So yes, a literal translation can help you understand the grammar, but you should not copy it directly into natural English.

It is in the accusative singular.

The basic noun is:

• το ψυγείο = the fridge

After σε (in / at / to), modern Greek normally uses the accusative, so:

• σε το ψυγείο → στο ψυγείο

This is a very common pattern:

• στο σπίτι = in the house / at home
• στο σχολείο = at school
• στο τραπέζι = on the table

So στο ψυγείο is a standard prepositional phrase with σε + accusative.