Моя дочь любит есть манго утром, а я добавляю киви в йогурт.

Because дочь is a feminine noun in Russian, and the possessive adjective мой (my) has to agree with the noun’s gender.

So:

• мой = my (masculine)
• моя = my (feminine)
• моё = my (neuter)
• мои = my (plural)

Since дочь means daughter and is feminine, you say моя дочь.

Not all feminine nouns in Russian end in -а or -я. Some feminine nouns end in a soft sign (ь), and дочь is one of them.

This is something learners often just have to memorize. Other feminine nouns with ь include:

• ночь = night
• дверь = door
• тетрадь = notebook

So although дочь ends in ь, it is still feminine.

This structure is normal in Russian. Любить means to like / to love, and it is often followed by an infinitive to show what someone likes doing.

So:

• любит = likes
• есть = to eat

Together, любит есть means likes to eat.

This is similar to English:

• She likes to eat mango in the morning.

Russian commonly uses:

• люблю читать = I like to read
• он любит плавать = he likes to swim
• мы любим путешествовать = we like to travel

Yes, есть can mean different things depending on context.

In this sentence, есть means to eat.

Russian has two different words spelled the same way:

1. есть = to eat
2. есть = there is / there are / is

In любит есть манго, it clearly means to eat, because it follows любит and is used as an infinitive.

So here:

• любит есть = likes to eat

not

• likes is

Because манго and киви are usually treated as indeclinable borrowed nouns in Russian. That means they often keep the same form in different grammatical cases.

So you get:

• есть манго
• добавляю киви
• без манго
• с киви

Unlike many Russian nouns, they do not usually change their endings.

This is common with some loanwords, especially names of foods, drinks, and exotic items.

Because утром is the normal adverbial form meaning in the morning.

It comes from утро (morning), but here it is in the instrumental case, which is often used in time expressions.

So:

• утро = morning
• утром = in the morning

Similar examples:

• вечером = in the evening
• днём = during the day / in the daytime
• ночью = at night

So есть манго утром means to eat mango in the morning.

А and и can both often be translated as and, but they are not used in exactly the same way.

In this sentence:

• Моя дочь любит есть манго утром, а я добавляю киви в йогурт.

А is used to contrast the two parts:

• My daughter does one thing,
• I do another.

It has a sense like:

• while
• whereas
• and as for me

If you used и, it would sound more like simple addition:

• My daughter likes to eat mango in the morning, and I add kiwi to yogurt.

But а better shows the shift from my daughter to I.

Because добавляю is a conjugated verb: it means I add.

• добавлять = to add (imperfective)
• добавляю = I add / I am adding

Добавить is the infinitive of the perfective partner, meaning to add in the sense of completing the action once.

Here the sentence describes a habitual or general action, so the imperfective добавляю is natural:

• I add kiwi to yogurt / I usually add kiwi to yogurt

If you wanted a completed one-time action, you might use a perfective form in a different context:

• Я добавлю киви в йогурт. = I will add kiwi to the yogurt.

Because after в, Russian can use different cases depending on the meaning:

• в + accusative = motion/direction into something
• в + prepositional = location in something

Here, добавляю киви в йогурт means I add kiwi into yogurt, so there is an idea of movement or insertion, and Russian uses the accusative:

• в йогурт

Compare:

• Кладу ложку в стакан. = I put a spoon into the glass.
• Ложка в стакане. = The spoon is in the glass.

So:

• в йогурт = into yogurt
• в йогурте = in yogurt

For many masculine inanimate nouns, the accusative singular looks exactly the same as the nominative singular.

So:

• nominative: йогурт
• accusative: йогурт

That is why в йогурт does not show a visible ending change.

Compare:

• стол → вижу стол
• суп → ем суп
• йогурт → добавляю в йогурт

But with feminine nouns, the accusative often does change:

• вода → пью воду

No, Russian word order is fairly flexible, although some orders sound more natural than others depending on emphasis.

The given sentence is neutral and natural:

• Моя дочь любит есть манго утром, а я добавляю киви в йогурт.

You could move things around for emphasis, for example:

• Утром моя дочь любит есть манго, а я добавляю киви в йогурт.
• Киви я добавляю в йогурт.

But changing word order can shift the focus or sound more marked. For learners, the original version is a good standard pattern.

No, in this sentence утром clearly means in the morning, not an adjective describing манго.

That is because утром is an adverbial time expression. It tells you when the daughter likes to eat mango.

So the structure is:

• любит есть манго утром
• likes to eat mango in the morning

If Russian wanted to describe a type of mango in an adjective-like way, it would use a very different structure.

Because Russian has no articles like a, an, or the.

Russian relies on context, word order, and overall meaning instead.

So:

• дочь can mean daughter, a daughter, or the daughter
• манго can mean mango, a mango, or the mango

In this sentence, English naturally supplies the meaning from context:

• My daughter likes to eat mango in the morning, and I add kiwi to yogurt.

When learning Russian, one of the big adjustments for English speakers is getting used to meaning without articles.