К, До, У: Approach, Limit, and Proximity

К: approach, orientation, and destination near a person

К takes the dative.

• к дому — toward/to the house.
• к окну — toward/to the window.
• к врачу — to the doctor.
• к преподавателю — to the teacher.
• к Анне — to Anna / to Anna’s place.
• к родителям — to one’s parents.

Examples:

• Он подошёл к окну. — “He went up to the window.”
• Мы идём к врачу. — “We are going to the doctor.”
• Она поехала к родителям. — “She went to her parents.”
• Студент подошёл к преподавателю после лекции. — “The student approached the teacher after the lecture.”

К often implies approach to a person, point, object, or appointment, not entry into a container. That is why к врачу is different from в больницу.

It also appears in abstract orientation:

• интерес к языку — interest in the language.
• любовь к музыке — love for music.
• готовность к экзамену — readiness for the exam.
• отношение к проблеме — attitude toward the problem.

The core idea is directedness toward something.

До: limit, endpoint, and threshold

До takes the genitive.

• до дома — up to home / as far as home.
• до станции — as far as the station.
• до Москвы — as far as Moscow.
• до конца — to the end.
• до вечера — until evening.
• до экзамена — before/until the exam.

Examples:

• Мы дошли до станции. — “We got as far as the station.”
• Он доехал до Москвы за ночь. — “He reached Moscow overnight.”
• Прочитайте текст до конца. — “Read the text to the end.”
• Я работаю до шести. — “I work until six.”

До marks a boundary. Sometimes the boundary is spatial, sometimes temporal, sometimes textual, sometimes emotional.

• до слёз — to tears.
• до боли — to the point of pain.
• до последней страницы — up to the last page.
• до начала урока — before the beginning of the lesson.

У: proximity, possession, and someone’s place

У takes the genitive.

• у дома — by/near the house.
• у окна — by the window.
• у двери — by the door.
• у врача — at the doctor’s / with the doctor.
• у Анны — at Anna’s place / with Anna.
• у меня — at me, the basis of Russian possession.

Examples:

• Машина стоит у дома. — “The car is standing by the house.”
• Она сидела у окна. — “She was sitting by the window.”
• Я был у врача. — “I was at the doctor’s.”
• Мы ужинали у Анны. — “We had dinner at Anna’s place.”
• У меня есть вопрос. — “I have a question.”

The possession construction у меня есть comes from the same locational logic: “at me there is.” Russian often frames possession as existence located near or with a person.

К врачу, у врача, от врача

The doctor example is one of the best diagnostic sets in Russian.

• Я иду к врачу. — I am going to the doctor.
• Я был у врача. — I was at the doctor’s.
• Я вернулся от врача. — I returned from the doctor.

Do not say в врачу. A doctor is not a place you enter. If you mean the hospital or clinic, use a place noun:

• Я иду в поликлинику. — I am going to the clinic.
• Я лежал в больнице. — I was in the hospital.

But the appointment or professional person is usually к врачу.

К дому, до дома, у дома, из дома, от дома

The noun дом shows how prepositions encode different relations.

• к дому — toward the house.
• до дома — as far as home / to the house as endpoint.
• у дома — by the house.
• в доме — inside the house.
• из дома — out of/from the house.
• от дома — away from the house.

Examples:

• Он подошёл к дому. — He approached the house.
• Он дошёл до дома. — He reached home.
• Он стоял у дома. — He stood by the house.
• Он вышел из дома. — He left the house.
• Он отошёл от дома. — He moved away from the house.

This cluster is a powerful antidote to English-based translation.

Time: к and до

К and до both appear in time expressions, but they do different jobs.

• к восьми часам — by eight o’clock, in time for eight.
• до восьми часов — until eight o’clock / before eight.
• к утру — by morning.
• до утра — until morning.
• к началу лекции — by the start of the lecture.
• до начала лекции — before the start of the lecture.

Examples:

• Приходите к восьми. — “Come by eight.”
• Я работаю до восьми. — “I work until eight.”
• К утру снег растаял. — “By morning the snow had melted.”
• До утра мы не спали. — “We did not sleep until morning.”

К points toward a target time. До marks a boundary before or up to which something holds.

Common learner errors

The first error is using в for people. Я иду в Анну is not a normal way to say “I am going to Anna’s.” Use к Анне.

The second error is treating к and до as synonyms. Дойти до станции emphasizes reaching the endpoint. Подойти к станции emphasizes approaching it.

The third error is missing у for being at someone’s place. Я был в Анне is wrong; use у Анны.

The fourth error is confusing time boundaries. К восьми means “by eight”; до восьми means “until eight” or “before eight.”

Practice sequence

Make relation clusters from one noun:

• дом: к дому, до дома, у дома, в доме, из дома, от дома.
• окно: к окну, у окна, от окна, до окна.
• Анна: к Анне, у Анны, от Анны.
• врач: к врачу, у врача, от врача.

Then translate the relation, not just the preposition:

• approach → к.
• reach a limit → до.
• be near/at someone’s place → у.
• leave from a person → от.
• exit from inside → из.

Finally, make time contrasts:

• к пятнице — by Friday.
• до пятницы — until Friday / before Friday.
• к началу — by the beginning.
• до начала — before the beginning.

Final rule

Use к for directed approach, до for a limit or endpoint, and у for proximity, presence at someone’s place, or possession. These prepositions do not merely translate English “to” and “at”; they encode different spatial and social relations.

Separate Approach, Limit, and Presence

These three prepositions form a subtle but teachable system:

The key is not to let English “to” and “at” flatten these distinctions.

• Я иду к врачу. — I am going to the doctor.
• Я у врача. — I am at the doctor’s.
• Я вернулся от врача. — I returned from the doctor’s.
• Я дошёл до больницы. — I got as far as/reached the hospital.
• Я пошёл в больницу. — I went to the hospital.

Each phrase chooses a different spatial-social frame.

К: approach, contact, orientation, addressee

Use к + dative when the situation is oriented toward a person, point, boundary, event deadline, or addressee.

People and professionals:

• к врачу.
• к преподавателю.
• к друзьям.
• к родителям.
• к специалисту.

Physical points:

• к окну.
• к двери.
• к столу.
• к берегу.

Abstract orientation:

• готовиться к экзамену.
• привыкнуть к городу.
• интерес к языку.
• уважение к традиции.

Temporal target:

• к пяти часам — by/toward five o’clock.
• к вечеру — by/toward evening.
• к началу курса — by the start of the course.

The common thread is orientation toward a target, not entry into a container.

До: limit, endpoint, threshold

Use до + genitive for an endpoint, limit, or threshold.

Spatial limit:

• дойти до дома — reach home.
• доехать до станции — get as far as the station.
• дойти до окна — walk up to the window / as far as the window.
• от Москвы до Петербурга — from Moscow to Petersburg as an extent.

Temporal limit:

• до пяти — until/before five.
• до экзамена — before the exam.
• до начала лекции — before the lecture starts.
• до конца недели — until the end of the week.

Degree/extent:

• до слёз — to tears.
• до предела — to the limit.
• до сих пор — until now / still.

Contrast к and до:

• подойти к двери — approach the door as a target.
• дойти до двери — get as far as the door/reach the door.
• подготовить отчёт к пятнице — have it ready by Friday.
• работать до пятницы — work until Friday.

У: location by, at someone’s, possession, experience-holder

Use у + genitive for proximity and for “at someone’s place/with someone” in a broad social sense.

Proximity:

• у окна — by the window.
• у двери — by the door.
• у реки — by the river.
• у входа — by the entrance.

At someone’s place or appointment:

• у Анны — at Anna’s place / with Anna.
• у родителей — at one’s parents’ place.
• у врача — at the doctor’s.
• у преподавателя — with/at the teacher’s.

Possession and availability:

• у меня есть книга — I have a book.
• у неё нет времени — she has no time.
• у нас была проблема — we had a problem.
• у студентов возник вопрос — the students had a question arise.

Physical or experiential feature:

• у него болит голова — he has a headache.
• у неё хороший акцент — she has a good accent.
• у слова два значения — the word has two meanings.

Teach у as a genitive frame that places something in someone’s sphere, not as a literal equivalent of English “at” or “have.”

Pronouns after у, к, до

These prepositions are high-frequency with pronouns. Drill them early.

• у меня, у тебя, у него, у неё, у нас, у вас, у них.
• ко мне, к тебе, к нему, к ней, к нам, к вам, к ним.
• до меня, до тебя, до него, до неё, до нас, до вас, до них.

Notice the н- in third-person pronouns after many prepositions: у него, к нему, до него. This is not optional in standard Russian.

Drill: choose к, до, or у

1. Я иду ___ врачу.
2. Я сейчас ___ врача.
3. Я дошёл ___ двери.
4. Она подошла ___ окну.
5. Мы работаем ___ пяти.
6. Отчёт нужен ___ пятнице.
7. ___ меня есть вопрос.
8. Он привык ___ новому городу.
9. Мы сидели ___ окна.
10. Дорога идёт ___ самой реки.
11. Она была ___ родителей.
12. Подготовьтесь ___ экзамену.

Suggested answers:

1. к врачу.
2. у врача.
3. до двери.
4. к окну.
5. до пяти.
6. к пятнице.
7. У меня.
8. к новому городу.
9. у окна.
10. до самой реки.
11. у родителей.
12. к экзамену.

Build Contrast Sets Around One Noun or Situation

Study к/у/от as a social-location triad and до as a limit preposition. Contrast them with the same noun or scene: a person example such as к врачу / у врача / от врача, a physical-point example such as к дому / у дома / от дома / до дома, a time example such as к восьми / до восьми, and a possession example such as у меня есть вопрос.