Comparison Constructions: чем, как, такой же как | Russian Grammar

Knowing the comparative form (вы́ше "taller", бо́льше "more") is only half the job. To say "taller than me", "as tall as my brother", "the more the better", or "twice as much", you need the constructions that frame the comparison — and Russian offers a small set of them, each with its own grammar. This page assembles them. For the formation of comparatives themselves see The Comparative; here the focus is the syntax of comparison.

"Than": two ways to build it

Russian has two equivalent ways to say "than" after a comparative:

чем + the same case. Put чем before the thing compared, and keep that thing in whatever case it would have had on its own. This way always works and is the safe default — especially when the two things compared are not in the nominative.
The bare genitive. Drop чем and put the compared thing directly in the genitive. This is shorter and very common, but only works cleanly when the compared item is a single noun or pronoun.

Он вы́ше, чем я.

He's taller than me. (чем + nominative я, matching the subject он)

Он вы́ше меня́.

He's taller than me. (bare genitive меня́ — same meaning, shorter)

В Москве́ зимо́й холодне́е, чем в Петербу́рге.

In Moscow it's colder in winter than in Petersburg. (чем required here — comparing two prepositional phrases, where the bare genitive can't be used)

💡

Use the bare genitive only when you're comparing a single noun or pronoun (вы́ше меня́, ста́рше бра́та). The moment the second element is a phrase, a different case, or itself modified, switch to чем + same case (холодне́е, чем в Петербу́рге). When in doubt, чем always works.

Equality: тако́й же…как vs так же…как

To say two things are equally something — "as X as" — Russian splits the construction by what is being compared:

тако́й же…, как — for adjectives (and nouns). тако́й agrees in gender/number/case with its noun: тако́й же / така́я же / тако́е же / таки́е же.
так же…, как — for verbs and adverbs (manner): так же is invariable here.
сто́лько же…, ско́лько — for quantity ("as much / as many as").

Он тако́й же высо́кий, как его́ брат.

He's as tall as his brother. (тако́й же + adjective высо́кий)

Она́ поёт так же краси́во, как её мать.

She sings as beautifully as her mother. (так же + adverb краси́во)

У меня́ сто́лько же книг, ско́лько у тебя́.

I have as many books as you. (сто́лько же…ско́лько for quantity)

The dividing line is adjective vs verb/adverb: тако́й же modifies a thing (an adjective describing a noun), так же modifies an action (how something is done). Confusing the two is the central error here.

"The more…, the more": чем…, тем

Proportional comparison — "the more X, the more Y" — uses the fixed frame чем + comparative…, тем + comparative. Both halves carry a comparative; the тем-clause states the consequence.

Чем бо́льше, тем лу́чше.

The more, the better. (the bare idiom — two comparatives)

Чем бо́льше я об э́том ду́маю, тем ме́ньше понима́ю.

The more I think about it, the less I understand. (чем бо́льше…, тем ме́ньше)

Similarity and difference

как ("like / as") for a plain simile — works like a machine, behaves like a child.
похо́ж на + accusative ("looks like / resembles") — agrees in gender/number (похо́ж / похо́жа / похо́жи).
отлича́ться от + genitive ("differ from") — for stating a difference.

Он рабо́тает как маши́на.

He works like a machine. (как + nominative for a simile)

Она́ о́чень похо́жа на свою́ мать.

She looks a lot like her mother. (похо́жа на + accusative)

Э́та моде́ль отлича́ется от пре́жней то́лько цено́й.

This model differs from the previous one only in price. (отлича́ется от + genitive)

Proportion and the size of the gap

Two high-frequency patterns handle "how much more":

в … ра́за/раз + comparative — a multiplicative comparison ("twice / three times as much"). в два ра́за бо́льше = "twice as much"; в три ра́за доро́же = "three times as expensive".
на + accusative — the size of the gap ("older by two years", "bigger by ten centimetres"). The на-phrase measures the difference.

Э́та кварти́ра в два ра́за бо́льше на́шей.

This flat is twice as big as ours. (в два ра́за бо́льше + genitive на́шей)

Он ста́рше меня́ на два го́да.

He's two years older than me. (gap measured by на + accusative два го́да)

Биле́ты ста́ли доро́же на пятьсо́т рубле́й.

The tickets got five hundred roubles more expensive. (на + accusative for the amount of increase)

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Keep the two "gap" patterns apart: в N раз = a ratio ("N times as much"), на + accusative = an absolute difference ("more by N"). "Twice as old" is в два ра́за ста́рше; "two years older" is ста́рше на два го́да. English blurs these; Russian needs the right one.

How this differs from English

English uses one tidy word for several jobs that Russian splits. English "than" is invariable; Russian offers чем + same case or the bare genitive, and you must keep the compared elements in matching cases. English "as…as" covers adjectives, adverbs and quantity alike; Russian splits it into тако́й же…как (adjectives), так же…как (verbs/adverbs) and сто́лько же…ско́лько (quantity). English "like" spreads across like a machine and looks like; Russian uses как for the simile but похо́ж на + accusative for resemblance. And English "twice as / two years older" map onto two distinct Russian frames — в два ра́за for a ratio and на + accusative for an absolute gap.

Common Mistakes

❌ Он так же высо́кий, как его́ брат.

Wrong frame — adjectives take тако́й же…как, not так же…как (which is for verbs/adverbs): Он тако́й же высо́кий, как его́ брат.

✅ Он тако́й же высо́кий, как его́ брат.

He's as tall as his brother.

❌ Она́ поёт тако́й же краси́во, как мать.

Wrong frame — manner (an adverb) takes так же…как, not тако́й же: Она́ поёт так же краси́во, как мать.

✅ Она́ поёт так же краси́во, как мать.

She sings as beautifully as her mother.

❌ Он ста́рше меня́ в два го́да.

Wrong frame — an absolute age gap uses на + accusative, not в: Он ста́рше меня́ на два го́да.

✅ Он ста́рше меня́ на два го́да.

He's two years older than me.

❌ Он вы́ше чем меня́.

Mixed constructions — either чем + nominative (чем я) OR the bare genitive (меня́), not чем + genitive.

✅ Он вы́ше, чем я. / Он вы́ше меня́.

He's taller than me. (two correct builds)

❌ Она́ похо́жа свою́ мать.

Missing preposition — resemblance is похо́ж НА + accusative: Она́ похо́жа на свою́ мать.

✅ Она́ похо́жа на свою́ мать.

She looks like her mother.

Key Takeaways

"Than" = чем + same case (always safe) or the bare genitive (single noun/pronoun only): вы́ше, чем я / вы́ше меня́.
Equality: тако́й же…как for adjectives, так же…как for verbs/adverbs, сто́лько же…ско́лько for quantity.
"The more…the more" = чем + comparative…, тем + comparative (Чем бо́льше, тем лу́чше).
Similarity/difference: как (simile), похо́ж на + accusative (resemblance), отлича́ться от + genitive (difference).
Ratio vs gap: в два ра́за бо́льше (twice as much) vs ста́рше на два го́да (older by two years) — на + accusative measures the absolute difference.

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