Я аккуратно перевязал подарок синей лентой.

In this sentence, перевязал means something like tied up / tied around / bound with.

With подарок and лентой, the idea is that the speaker tied the gift using a ribbon, probably around the box.

A useful nuance:

• вязать = to knit, tie
• перевязать = to tie around, retie, bind

This verb can also mean to bandage in other contexts, but here that meaning is impossible because the object is подарок and the instrument is синей лентой.

Перевязал is:

• past tense
• singular
• masculine

In Russian past tense, the verb agrees with the gender and number of the subject:

• перевязал = masculine singular
• перевязала = feminine singular
• перевязало = neuter singular
• перевязали = plural

So this sentence suggests that the speaker is male, or at least the grammatical speaker is masculine.

Yes. A female speaker would normally say:

Я аккуратно перевязала подарок синей лентой.

Only the past-tense verb changes:

• male speaker: перевязал
• female speaker: перевязала

The rest of the sentence stays the same.

Подарок is the direct object, so it is in the accusative case.

But for inanimate masculine nouns, the accusative singular is often the same as the nominative singular:

• nominative: подарок
• accusative: подарок

So the case has changed grammatically, but the form happens to look the same.

Compare with an animate masculine noun:

• Я вижу брата = I see my brother

There, the accusative does look different.

Because синей лентой is in the instrumental case, not the accusative.

The phrase means with a blue ribbon, where the ribbon is the means or instrument used to do the action.

Russian often uses the instrumental case for with / by means of:

• писать ручкой = to write with a pen
• резать ножом = to cut with a knife
• перевязать лентой = to tie with a ribbon

So:

• nominative: синяя лента
• accusative: синюю ленту
• instrumental: синей лентой

Because adjectives must agree with the nouns they describe in:

• gender
• number
• case

Here, лента is:

• feminine
• singular
• instrumental

So the adjective синий must also become feminine singular instrumental:

• синяя лента = nominative
• синей лентой = instrumental

That is why both words change together.

Аккуратно is an adverb, not an adjective.

Here it describes how the action was done:

• Я аккуратно перевязал... = I tied it carefully/neatly

Related forms:

• аккуратный = careful, neat, tidy
• аккуратная = feminine form of the adjective
• аккуратно = carefully, neatly

So аккуратно modifies the verb перевязал.

They can both sometimes translate as carefully, but the nuance is different.

• аккуратно = neatly, tidily, with precision, without making a mess
• осторожно = cautiously, carefully so as not to cause damage or danger

In this sentence, аккуратно fits well because wrapping or tying a gift is about neatness and precision.

So:

• аккуратно перевязал подарок = tied the gift neatly/carefully
• осторожно перевязал подарок would sound more like the speaker was being cautious, perhaps not to damage it

Because Russian often uses the instrumental case by itself to express the tool or means used to perform an action.

So синей лентой naturally means with a blue ribbon without needing a separate word for with.

English uses a preposition:

• with a blue ribbon

Russian often does not:

• синей лентой

This is very common with tools, materials, and means.

Yes, very often.

Russian frequently drops subject pronouns when they are clear from the verb form or the context.

So this could also be:

• Аккуратно перевязал подарок синей лентой.

That can still mean I carefully tied the gift with a blue ribbon, especially in context.

However, Я may be kept:

• for emphasis
• for contrast
• to make the sentence clearer on its own

Yes, Russian word order is flexible, and different orders change the emphasis more than the basic meaning.

The neutral version here is:

Я аккуратно перевязал подарок синей лентой.

This flows naturally as:

• subject: Я
• adverb: аккуратно
• verb: перевязал
• object: подарок
• instrument: синей лентой

Other orders are possible, for example:

• Я подарок аккуратно перевязал синей лентой.
• Синей лентой я аккуратно перевязал подарок.

These sound more marked and may emphasize:

• the gift
• the ribbon
• the manner of the action

So the original order is a natural, neutral choice.

Перевязал is perfective.

That means the action is presented as:

• completed
• whole
• finished

So the sentence describes a completed act of tying the gift.

The imperfective partner is usually перевязывал:

• Я перевязывал подарок синей лентой.

That would suggest:

• the process
• repeated action
• background description
• or an unfinished action, depending on context

In this sentence, perfective makes sense because the gift ended up tied with the ribbon.

Possibly, yes.

The prefix пере- can sometimes suggest:

• doing something again
• doing it over
• tying across/around

So перевязал can, in some contexts, carry a sense of retied. But in this sentence, many learners should first understand it simply as tied up / tied around with a ribbon.

Whether re-tied is intended depends on context:

• if the gift had already been tied before and the speaker did it again, then re-tied is a good translation
• if there is no such context, tied or tied up is safer

Not exactly.

• лента = ribbon, band, strip
• ленточка = little ribbon, ribbon in a more affectionate or diminutive way

So синей лентой is the neutral form:

• with a blue ribbon

If someone said синей ленточкой, it would sound softer, smaller, or more affectionate:

• with a little blue ribbon

Both are possible, but лента is the neutral vocabulary choice.