Я ещё не успел сделать домашнее задание.

It means something like haven’t done it yet because there hasn’t been enough time so far.

The verb успеть is about:

• having enough time
• managing to do something before a certain moment
• succeeding in time

So Я ещё не успел сделать домашнее задание is very close to:

• I haven’t had time to do my homework yet
• I haven’t managed to do my homework yet

It is not just simple non-completion. It specifically suggests a time limit or expected moment.

This is very natural in Russian.

Russian often uses the past tense of успеть to talk about whether something has been completed by now or before some moment.

So:

• Я ещё не успел сделать... = I haven’t had time to do... yet
• literally, it is closer to I did not manage in time yet

English uses a present perfect here, but Russian does not have a direct equivalent of the English present perfect. Very often, Russian uses the past tense where English uses have done / haven’t done.

Because успел is masculine singular past tense.

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

• я успел = I did manage / I had time to... (said by a male)
• я успела = same meaning, but said by a female)
• мы успели = we managed / had time

So if the speaker is female, the sentence would be:

Я ещё не успела сделать домашнее задание.

Because сделать is perfective, and after успеть Russian usually uses a verb that refers to a completed action.

Compare:

• делать = to do, be doing
• сделать = to do, to complete, to get done

In this sentence, the point is whether the homework was completed in time. That is why сделать is the natural choice.

So:

• успел сделать = managed to do / had time to do completely

Using делать here would usually sound less natural unless you were focusing on the process rather than completion.

Here ещё means yet or still.

So:

• Я не успел сделать домашнее задание = I didn’t have time to do my homework
• Я ещё не успел сделать домашнее задание = I haven’t had time to do my homework yet

The combination ещё не is extremely common in Russian and often corresponds to English not yet.

Examples:

• Я ещё не ел. = I haven’t eaten yet.
• Он ещё не пришёл. = He hasn’t come yet.

It is in the accusative case because it is the direct object of сделать.

You are doing what?

• домашнее задание

So the object is accusative.

However, in this particular phrase, the accusative looks exactly the same as the nominative because:

• задание is neuter singular and inanimate
• neuter singular inanimate nouns usually have the same form in nominative and accusative

So:

• nominative: домашнее задание
• accusative: домашнее задание

They look identical, but the grammatical role is different.

Because adjectives must agree with the noun they describe.

Here:

• задание is neuter
• singular
• accusative

So the adjective домашний changes to match it:

• домашнее задание

This agreement happens in gender, number, and case.

For example:

• домашняя работа = homework / home assignment work-style phrase
• домашнее задание = homework assignment
• домашние задания = homework assignments

Yes, often you can.

Russian frequently drops subject pronouns when the meaning is clear from the verb form or the context.

So both are possible:

• Я ещё не успел сделать домашнее задание.
• Ещё не успел сделать домашнее задание.

The version without Я sounds very natural in conversation if it is already obvious who is speaking.

Russian uses pronouns less often than English does.

No, Russian word order is fairly flexible, but some orders sound more natural than others.

The most neutral order here is:

• Я ещё не успел сделать домашнее задание.

This puts ещё не together, which is very common.

Other orders are possible, for example:

• Я не успел ещё сделать домашнее задание.
• Домашнее задание я ещё не успел сделать.

These can change emphasis:

• fronting домашнее задание emphasizes the homework
• moving ещё can slightly change rhythm or focus

For a learner, Я ещё не успел... is the safest and most natural pattern.

They are similar, but not the same.

• не успел сделать = did not have enough time / did not manage in time
• не смог сделать = could not do it / was unable to do it

So:

• Я ещё не успел сделать домашнее задание suggests a time problem
• Я не смог сделать домашнее задание suggests inability, difficulty, or some obstacle

If you simply ran out of time, не успел is the better choice.

You could, but it means something different.

• Я ещё не успел сделать домашнее задание = I haven’t had time to do my homework yet
• Я ещё не делал домашнее задание = I haven’t been doing / haven’t done the homework yet

The second sentence is less specific about the reason. It just says the action has not happened yet.
The first one specifically says that there has not been enough time.

So не успел сделать is more informative.

The past tense form of успеть changes with number and gender.

Examples:

• Я ещё не успел сделать домашнее задание. = male speaker
• Я ещё не успела сделать домашнее задание. = female speaker
• Мы ещё не успели сделать домашнее задание. = we haven’t had time to do the homework yet
• Он ещё не успел сделать домашнее задание. = he hasn’t had time yet
• Она ещё не успела сделать домашнее задание. = she hasn’t had time yet

The rest of the sentence stays the same.

The main stress patterns are:

• ещё
• успе́л
• сде́лать
• дома́шнее
• зада́ние

So the full sentence is pronounced roughly as:

Я ещё не успе́л сде́лать дома́шнее зада́ние.

This is useful because stress in Russian is unpredictable and can change from word to word, so it is worth learning it together with the vocabulary.