naengjanggo-e tomatorang oiga isseoseo achime gandanhi meogeosseo.

Here, 에 marks the location where something exists.

• 냉장고에 토마토랑 오이가 있어 = There are tomatoes and cucumbers in the fridge
• With 있다, the place where something exists is often marked with 에

So 냉장고에 means in the fridge or more literally at/in the refrigerator.

In 토마토랑 오이가, 랑 connects 토마토 and 오이 as tomatoes and cucumbers, and then 가 marks the whole combined phrase as the subject of 있다.

So this structure works like:

• 토마토랑 오이 = tomatoes and cucumbers
• 토마토랑 오이가 있다 = Tomatoes and cucumbers exist / There are tomatoes and cucumbers

Korean often puts the subject marker only once, at the end of the full noun phrase.

Yes, 랑 means and / with here.

So:

• 토마토랑 오이 = tomatoes and cucumbers

It is similar to:

• 토마토하고 오이
• 토마토와 오이
• 토마토과 오이 ← this one is incorrect because after 토마토, you would use 와, not 과

A quick comparison:

• 랑/이랑: casual, common in speech
• 하고: also common and conversational
• 와/과: a bit more formal or written

Since the sentence ends with 먹었어, which is casual, 랑 fits the tone well.

있어서 is 있다 + 아/어서.

Here, 있다 means to exist / to be there / to have available, and -아서/어서 connects it to the next clause with a meaning like:

• because
• so
• and since

So:

• 토마토랑 오이가 있어서 = because there were tomatoes and cucumbers / since I had tomatoes and cucumbers

In natural English, the idea is: There were tomatoes and cucumbers in the fridge, so I ate something simple in the morning.

Technically, it is the existence use of 있다:

• 냉장고에 토마토랑 오이가 있다 = There are tomatoes and cucumbers in the fridge

But in English, depending on context, it may feel like I had tomatoes and cucumbers available.

Korean often expresses possession or availability through existence in a place. So even though the grammar is there are X in the fridge, the practical meaning can be close to I had X.

아침에 literally means in the morning.

But depending on context, it can also suggest for breakfast or at breakfast time.

In this sentence, because it is followed by 간단히 먹었어, it can naturally be understood as:

• I ate something simple in the morning
• or I had a simple breakfast

Both are reasonable depending on the translation style.

간단히 means simply, lightly, or in a simple way.

It comes from 간단하다 (to be simple), and -히 turns it into an adverb.

So:

• 간단하다 = to be simple
• 간단히 먹다 = to eat simply / to have something simple

You may also hear 간단하게 먹다. That is also correct and very common.

In many cases:

• 간단히
• 간단하게

are both acceptable, with little difference in meaning here.

The object is omitted.

Korean very often leaves out objects when they are obvious from context. Here, the listener can infer that the speaker ate something involving the tomatoes and cucumbers, or just had a simple meal using what was in the fridge.

So even though there is no explicit object like 그걸 or 아침을, the sentence still sounds natural.

You could think of it as something like:

• (그걸로) 아침에 간단히 먹었어
• (토마토랑 오이로) 아침에 간단히 먹었어

But Korean often does not need to say that directly.

먹었어 is the casual, informal speech style.

Comparison:

• 먹었어 = casual
• 먹었어요 = polite
• 먹었습니다 = formal

Since the sentence also uses casual elements like 랑, the overall tone is informal, probably used with a friend, family member, or someone close.

A polite version would be:

• 냉장고에 토마토랑 오이가 있어서 아침에 간단히 먹었어요.

The subject is understood from context, and it is most naturally I.

Korean often omits subjects when they are clear. So instead of saying:

• 나는 아침에 간단히 먹었어

it is very natural to just say:

• 아침에 간단히 먹었어

In English, you usually need I, but in Korean it is often unnecessary.

It breaks down like this:

• 냉장고에 = in the fridge
• 토마토랑 오이가 = tomatoes and cucumbers
• 있어서 = because there were / since there were
• 아침에 = in the morning
• 간단히 = simply / lightly
• 먹었어 = ate

So the structure is roughly:

[In the fridge] [tomatoes and cucumbers] [were, so] [in the morning] [simply] [I ate].

This is very normal Korean word order: background information first, main action later.

Yes, in many situations it could.

For example:

• 냉장고에 토마토랑 오이가 있으니까 아침에 간단히 먹었어.

This also means something like: Since there were tomatoes and cucumbers in the fridge, I ate something simple in the morning.

But there is a nuance difference:

• -아서/어서 often sounds more like a natural flow of events or a straightforward reason
• -(으)니까 can sound a bit more explicitly like since / because

In this sentence, 있어서 sounds smooth and very natural.

Yes. In natural English, that is often the best interpretation.

Literally, 간단히 먹었어 is ate simply, but in real usage it often means:

• I had something simple
• I ate a light meal
• I kept breakfast simple

So this phrase is not only about the manner of eating; it often suggests the meal itself was simple or light.