Коли немовля спить, уся родина говорить тихо, бо вдома живуть три покоління.

Немовля means baby / infant. Grammatically, it is a neuter noun in Ukrainian, even if the real baby is biologically male or female.

In this sentence, немовля is the subject, so it is in the nominative singular.

A useful thing to remember:

• present-tense verbs do not show gender, so спить just means sleeps / is sleeping
• but in the past tense, you would see the neuter agreement: немовля спало = the baby slept

So the noun is neuter grammatically, but it can refer to any baby.

Here коли means when.

It introduces a time clause:

• Коли немовля спить = When the baby is sleeping / When the baby sleeps

In other contexts, коли can also mean when? as a question word:

• Коли ти прийдеш? = When will you come?

But in this sentence it is a subordinating conjunction, not a question word.

Because Коли немовля спить is a subordinate clause placed before the main clause.

Structure:

• Коли немовля спить, = subordinate time clause
• уся родина говорить тихо = main clause

Ukrainian normally separates this kind of clause with a comma, just as English does in:

• When the baby sleeps, the whole family speaks quietly.

Both уся родина and вся родина are correct and mean the whole family.

This is a common Ukrainian sound-pattern variation:

• вся
• уся

Speakers often choose в or у for euphony—whichever sounds smoother in context.

So here уся родина is not a different meaning from вся родина. It is just a natural-sounding variant.

Because the grammatical subject is родина, and родина is a singular noun.

So Ukrainian treats it as:

• родина говорить = the family speaks

This is similar to English when you treat family as a singular collective noun:

• The family speaks quietly.

Even though many people are included, the noun itself is singular, so the verb is singular too.

Because тихо is an adverb, and it describes how the family speaks.

• говорить тихо = speaks quietly

Compare:

• тихий голос = a quiet voice → adjective, describing a noun
• говорити тихо = to speak quietly → adverb, describing a verb

So here the sentence needs an adverb, not an adjective.

They overlap, but they are not always identical in nuance.

• сім’я usually means family in the immediate sense: parents and children
• родина can mean family, but often feels a bit broader, closer to the family / the relatives / the whole family circle

In this sentence, родина fits especially well because the next clause says that three generations live at home. That suggests an extended or multigenerational family, not just a nuclear family.

Yes, тому що would also work.

• бо = because
• тому що = also because

The difference is mostly one of style and rhythm:

• бо is short, common, and natural in everyday speech
• тому що can sound a bit fuller or more explicit

So:

• ...говорить тихо, бо вдома живуть три покоління
• ...говорить тихо, тому що вдома живуть три покоління

Both are grammatical.

Вдома means at home or in the home, and it is best learned as an adverb.

So in this sentence:

• вдома живуть три покоління = three generations live at home

It is not functioning here like a normal noun with a preposition that you need to analyze by case in the usual beginner way. Just treat вдома as a set adverb meaning at home.

A useful comparison:

• дім = house / home
• вдома = at home

Because три покоління refers to more than one generation, so the verb is plural:

• живуть = live (plural)

This is the natural agreement here:

• три покоління живуть
• живуть три покоління

Both mean three generations live.

Even though покоління looks like a singular form to many learners, in this expression it is part of a numeral phrase meaning a plural idea, so the plural verb живуть is expected.

After три, Ukrainian uses the counting form that nouns take with 2, 3, 4.

So:

• три покоління = three generations

After higher numbers, you often get a different form:

• п’ять поколінь = five generations

This pair is very useful:

• три покоління
• п’ять поколінь

So покоління after три is correct, while поколінь would be the form expected after five or more.

Both are possible, but they feel slightly different.

Вдома живуть три покоління is very natural because Ukrainian often puts:

1. the setting or location first,
2. then the verb,
3. then the subject as the new or important information.

So it has a bit of an existential feel:

• At home, there live three generations

Compare:

• Три покоління живуть вдома = more straightforward, more like Three generations live at home
• Вдома живуть три покоління = more natural if you are presenting the fact of who lives there

Ukrainian word order is flexible, and this version sounds especially smooth in context.

It has three parts:

1. Коли немовля спить
   a subordinate time clause: When the baby sleeps / is sleeping

2. уся родина говорить тихо
   the main clause: the whole family speaks quietly

3. бо вдома живуть три покоління
   a reason clause: because three generations live at home

So the pattern is:

When X happens, Y happens, because Z is true.

This is a very common and useful Ukrainian sentence pattern:

• time clause
• main clause
• reason clause

It is a good example of how Ukrainian links ideas with commas and conjunctions.