Ben akşam kahve içmiyorum, çünkü gece uyuyamıyorum.

In Turkish, the verb ending already shows the subject, so ben is often optional.

• içmiyorum = iç-
  • -miyor-
    • -um
• The -um ending already tells you the subject is I

So this sentence could also be:

Akşam kahve içmiyorum, çünkü gece uyuyamıyorum.

Adding ben can give a little extra emphasis or contrast, similar to As for me... or I... in English.

Yes — here akşam means in the evening / in the evenings, and Turkish often uses time words without extra case endings in this kind of adverbial use.

So:

• akşam = evening / in the evening
• gece = night / at night

This is very common with time expressions. Turkish does not always need a word equivalent to English in.

Compare:

• Sabah geliyorum. = I’m coming in the morning
• Akşam çalışıyorum. = I work / I’m working in the evening
• Gece uyumuyorum. = I don’t sleep at night

Because kahve here is a non-specific, general object.

In Turkish, a direct object often stays without the accusative ending when it is indefinite or generic:

• kahve içmiyorum = I don’t drink coffee
• kitap okuyorum = I’m reading a book / I read books

If the object is specific or definite, Turkish usually uses the accusative:

• kahveyi içmiyorum = I’m not drinking the coffee / that coffee

So in this sentence, kahve means coffee in general, not one specific coffee.

This is a very common point for English speakers. In Turkish, the -yor form is not limited to actions happening right this second. It can also describe:

• current actions
• repeated habits
• general personal behavior in context

So içmiyorum can mean:

• I’m not drinking
• I don’t drink
• I’m not drinking coffee in the evening

In this sentence, the meaning is more like a habitual choice:
I don’t drink coffee in the evening, because I can’t sleep at night.

Turkish often uses the -yor form where English might use the simple present.

It breaks down like this:

• iç- = drink
• -mi- = negative marker
• -yor- = present continuous / broad present in many contexts
• -um = I

So:

iç-mi-yor-um = I am not drinking / I don’t drink

Because of vowel harmony and sound patterns, the negative marker appears here as -mi-.

They refer to different parts of the day:

• akşam = evening
• gece = night

So the sentence is saying:

• In the evening, I don’t drink coffee
• because at night, I can’t sleep

This distinction matters. Turkish usually separates evening and night clearly, just like English does.

This word contains several pieces:

• uyu- = sleep
• -ya- = part of the ability/potential structure
• -ma- = negative
• -yor- = present continuous / broad present
• -um = I

So:

uyu-ya-ma-yor-um → uyuyamıyorum

This means:

I can’t sleep
or literally, I am not able to sleep

The extra y sound helps connect vowels smoothly.

Because these two mean different things:

• uyumuyorum = I am not sleeping
• uyuyamıyorum = I cannot sleep

That is a big difference.

In this sentence, the speaker does not mean I choose not to sleep or I’m not currently sleeping. The meaning is I’m unable to sleep.

So:

• kahve içmiyorum = I don’t drink coffee
• uyuyamıyorum = I can’t sleep

The second one expresses inability, not simple negation.

çünkü means because.

It introduces the reason:

• Ben akşam kahve içmiyorum = main statement
• çünkü gece uyuyamıyorum = reason

So the structure is:

[main idea], çünkü [reason]

This is very natural in Turkish.

You should also notice that the verb still goes near the end of each clause, which fits normal Turkish sentence structure.

Yes, Turkish word order is flexible, although some versions sound more neutral than others.

The given sentence is very natural:

Ben akşam kahve içmiyorum, çünkü gece uyuyamıyorum.

You could also say:

Akşam kahve içmiyorum, çünkü gece uyuyamıyorum.

This is probably even more natural in everyday speech, because ben is often omitted.

Turkish usually places the verb at the end of the clause, but time expressions like akşam and gece can move around for emphasis.

Yes, akşamları is possible, but it gives a slightly more clearly habitual sense:

• akşam = in the evening / this evening / evenings, depending on context
• akşamları = in the evenings, regularly

So:

• Akşam kahve içmiyorum = I don’t drink coffee in the evening
• Akşamları kahve içmiyorum = I don’t drink coffee in the evenings

Both can work, but akşamları emphasizes repeated routine more explicitly.

Because Turkish usually expresses can / be able to as part of the verb itself, not as a separate helper word like English does.

Compare:

• uyuyabiliyorum = I can sleep
• uyuyamıyorum = I can’t sleep

So instead of adding a separate word like can, Turkish builds the idea of ability directly into the verb.

This is very common in Turkish grammar and is something English speakers need to get used to.

Most likely it expresses a general habit or personal rule:

I don’t drink coffee in the evening, because I can’t sleep at night.

Even though -yor is often introduced as a present continuous ending, in real Turkish it frequently covers situations that English would express with the simple present.

So the sentence is best understood as a regular fact about the speaker’s behavior, not just something happening right now.