Yengem gelince babaannem ona hemen çay verecek.

Yengem is made of:

• yenge = sister-in-law / aunt by marriage, depending on family context
• -m = my

So yengem means my sister-in-law or my aunt by marriage, depending on who the person is in the family.

In Turkish, family words often take possessive endings directly:

• annem = my mother
• babam = my father
• ablam = my older sister
• yengem = my sister-in-law / aunt by marriage

So instead of saying a separate word for my, Turkish often adds a suffix.

Gelince means when she comes or when he comes, depending on context.

It comes from:

• gel- = come
• -ince / -ınca = when, once, upon

So:

• gelince = when coming / when she comes / when he comes

In this sentence, it introduces a time clause:

• Yengem gelince... = When my sister-in-law comes...

Turkish does not have to state she here, because the person is understood from context.

Both gelince and geldiğinde can mean when she comes / when she arrives, but they are built differently.

• gelince is a very common, compact way to say when X comes
• geldiğinde is another common structure meaning when she/he comes or more literally at the time that she/he comes

In many everyday sentences, gelince feels simpler and very natural.

So:

• Yengem gelince... = When my sister-in-law comes...
• Yengem geldiğinde... = When my sister-in-law comes...

Both are possible, but gelince is straightforward and common in speech.

Babaannem means my paternal grandmother — specifically, my father’s mother.

It breaks down as:

• babaanne = paternal grandmother
• -m = my

So:

• babaannem = my paternal grandmother

Turkish makes an important distinction here:

• babaanne = father’s mother
• anneanne = mother’s mother

English just says grandmother, but Turkish is more specific.

Ona means to her, to him, or to it.

It comes from:

• o = he / she / it / that
• -na / -a = dative ending, meaning to

So:

• o = she/he
• ona = to her / to him

It is used here because the verb vermek (to give) usually takes:

• someone the thing is given to → dative
• the thing being given → direct object

So in this sentence:

• ona = to her
• çay = tea

Together: give tea to her

Turkish word order is flexible, but the most neutral pattern often puts the verb at the end.

Here the sentence is organized like this:

• Yengem gelince = when my sister-in-law comes
• babaannem = my grandmother
• ona = to her
• hemen = immediately
• çay = tea
• verecek = will give

So the full structure is:

[time clause] + [subject] + [indirect object] + [adverb] + [direct object] + [verb]

This is very natural in Turkish.

English would normally say: When my sister-in-law comes, my grandmother will immediately give her tea.

Turkish prefers to save the main verb for the end.

This is about the direct object.

• çay = tea
• çayı = the tea / tea as a definite direct object

In Turkish, the accusative ending is often used when the direct object is specific/definite.

Compare:

• çay verecek = will give tea / will serve tea
• çayı verecek = will give the tea

In your sentence, çay is more general and natural, like serve her some tea or give her tea.

If you said çayı verecek, it would sound more like a particular tea already known in the context.

Verecek means will give.

It comes from:

• ver- = give
• -ecek / -acak = future tense suffix

So:

• ver-ecek = will give

This is third person singular, so there is no extra personal ending here.

Compare:

• vereceğim = I will give
• vereceksin = you will give
• verecek = he/she will give
• vereceğiz = we will give

In your sentence, the subject is babaannem, so verecek means my grandmother will give.

Hemen means immediately, right away, or at once.

So:

• ona hemen çay verecek = she will give her tea immediately / right away

It adds the idea that the grandmother will not wait.

A few examples:

• Hemen geliyorum. = I’m coming right away.
• Hemen otur. = Sit down immediately.
• Babaannem ona hemen çay verecek. = My grandmother will give her tea right away.

Turkish uses case endings and sentence roles very clearly here.

• babaannem = the subject, the person doing the action
• ona = the indirect object, the person receiving something
• çay = the thing being given
• verecek = will give

So:

• my grandmother = giver
• her = receiver
• tea = thing given

Even if the word order changed, these forms help show the roles. For example, ona is clearly marked as to her because of the dative ending.

In most normal contexts, gelince means when she comes.

It usually expresses a time relation, not a condition.

So this sentence suggests: As soon as my sister-in-law comes / when my sister-in-law arrives, my grandmother will give her tea.

If you wanted a clearer if meaning, Turkish would more naturally use something like:

• gelirse = if she comes

So:

• gelince = when she comes
• gelirse = if she comes

That is an important difference.

Yes, very much.

Offering çay is extremely common in Turkish culture, especially when someone arrives at a home. So a sentence like this sounds natural both grammatically and culturally:

• someone arrives
• an older family member offers tea right away

That is why hemen çay verecek feels very natural here. It is not just literal grammar; it also reflects a familiar social habit.