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変える (かえる / kaeru): to change. N4 level Japanese vocabulary.

Learn food and drink vocabulary and how to order, express preferences, and use the infinitive with modal verbs like voli and ŝati.

HSK 4 | noun | a geographical or administrative area

HSK 4 | noun | physical space, room, or conceptual space for something

We are given an essay, which is a sequence of words, and a dictionary of synonym pairs. Each synonym pair allows us to replace one word with another, but only in the direction specified. Fedor wants to modify his essay to minimize the number of letters R (case-insensitive).

HSK 5 | noun | the capacity or power to have an effect on others' behavior or thinking

HSK 4 | adjective | particular and detailed rather than vague or abstract

N1 grammar: classical auxiliary ごとし expressing literary simile ('like / as though'). Used in literary prose, proverbs, and formal descriptive writing.

HSK 3 | noun | neck, the part of the body connecting the head to the shoulders

HSK 2 | verb-object phrase | to run or go jogging as an activity

HSK 4 | noun | the monetary or intrinsic worth of something

HSK 3 | verb | to support, to back, to endorse

Esperanto vocabulary for feelings, emotions, personality traits, and character descriptions.

Master six essential Japanese patterns for expressing probability, hearsay, and inference — かもしれない, でしょう/だろう, はずだ/はずがない, らしい, そうだ (two uses!), and ようだ — with a certainty-scale comparison table.

Japanese numbers 1–10,000+, ordinal numbers, and the counter system (hon, mai, hiki, satsu, hai, ko, nin, and more) with examples.

HSK 2 | verb | to feel anxious or worried about someone or something

Codeforces 465A: inc ARG

HSK 4 | adjective | having a quality or character that belongs to no other person or thing

HSK 2 | verb | pivotal causative verb: let someone do, make someone do

JLPT N4 kanji 社 — readings, vocabulary, stroke order, mnemonic, and common confusion pairs.

HSK 1 | verb | seeing or viewing in multiple senses

HSK 3 | adjective | fierce, severe, formidable, impressive — colloquial praise or warning

N1 grammar pattern 〜だに: a literary/formal emphatic particle meaning 'even' — used to intensify a minimal or extreme case.

Learn 〜わけがない (there's no way ~, it's impossible that ~) — the N3 pattern for expressing strong logical impossibility based on the speaker's conviction.

HSK 4 | adverb | expressing a combined total

HSK 1 | noun/verb | used for minutes in time-telling; also means to divide or a fraction

HSK 3 | adjective / verb | clear, distinct; to be clear about something

HSK 3 | noun | a country other than one's own

HSK 5 | noun | materials used for teaching, including textbooks and instructional resources

HSK 4 | adjective | ahead of others in development or quality

Learn the formal conjunctive particle 〜において (in, at — domain marker) and its attributive form 〜における, essential for N3 reading and formal written Japanese.

HSK 5 | verb | to talk someone into something; to win someone over

HSK 7 | verb | formal medical term for applying therapeutic intervention to a patient

HSK 2 | adverb | introduces a correction or revelation, contrasting with what was assumed

HSK 4 | adjective / verb | having or providing plentiful variety and substance

Learn to ask for and give directions, name places in a city, and talk about transport in Esperanto.

HSK 3 | adjective | slow-witted or physically awkward

HSK 6 | verb | to sum up the essential points; to state in broad terms

Express intentions and future plans using 打算, 准备, 要, and 会 in natural Chinese.

Formation of present and imperfect subjunctive for all conjugations, purpose clauses with ut/ne, indirect commands, and an introduction to sequence of tenses.

HSK 5 | adjective | delicately complex in a way that is difficult to analyze or describe

HSK 2 | adjective / noun | male gender; a man or boy

Learn how result complements attach to verbs to express the outcome or completion of an action, a fundamental building block of Mandarin grammar.

HSK 3 | adjective/noun/verb | evenly distributed; the statistical mean

Master topic-comment sentence structure and topic-introducing expressions like 说到, 关于, and 对于 at B1 level.

来 (rai/ku-ru): come. JLPT N5 kanji.

Engage with Chinese discourse on international relations, foreign policy, and globalization, mastering the vocabulary and grammar of global governance.

HSK 5 | adjective | different from what is normal; exceptional; having unique qualities

N1 grammar pattern 〜とばかりに: describing a manner or attitude 'as if to say ~, with the air of ~' — the subject's action speaks louder than words.

HSK 4 | adverb | describing slow, incremental change over time

HSK 3 | verb/noun | to grasp the meaning or reasoning of something

HSK 1 | noun | one's younger brother

HSK 3 | noun | dish, course of food; vegetable broadly — general term covering both cooked dishes and raw produce

HSK 5 | adjective/adverb | expressing the idea of being contrary or the reverse

HSK 3 | verb | to raise something upward or to give an example

We are asked to maximize the minimum height of flowers after a limited number of days of watering. Each flower has an initial height, and on any day we can water a contiguous segment of exactly w flowers, increasing each by one.

HSK 3 | verb | to feel at ease; to set one's mind at rest

HSK 4 | adjective | having the pleasant taste of sugar; also used figuratively

HSK 3 | adverb/adjective | happening without warning

HSK 4 | adjective | effective or legally valid

HSK 4 | noun | a secret word or number used for authentication or encryption

HSK 3 | adjective/noun | relating to the present era

Mastering professional Chinese translation: register equivalence, cultural default, domestication and foreignization.

JLPT N4 kanji 図 — readings, vocabulary, stroke order, mnemonic, and common confusion pairs.

HSK 1 | noun | supermarket

HSK 4 | verb/noun | to infer, to speculate; inference, speculation

Learn color vocabulary and how Esperanto adjectives work, including the productive mal- prefix for expressing opposites.

HSK 4 | noun | rule; regulation; norm

HSK 5 | noun | underlying fundamental principle or law governing operation

Express a full range of emotions in Esperanto, describe how you feel, use -iĝ- for emotional changes, and comfort others in conversation.

HSK 4 | phrase | formal phrase to introduce a summary or conclusion

HSK 1 | adverb | also, too — adds the same information about the subject

HSK 5 | verb | to advocate; to promote; to champion (a cause or idea)

HSK 3 | verb | to take, to fetch, to retrieve, to obtain

Narrate travel experiences using 经历 narrative patterns and vocabulary for memorable moments, local customs, and personal impressions at B1 level.

HSK 5 | noun | medicine, drug, pharmaceutical substance

HSK 3 | verb | to put down, to set down, to let go of

HSK 4 | noun / adjective | an organized set of connected parts, or thorough and orderly

HSK 3 | noun/adjective/adverb | the natural world; being natural or obvious

HSK 5 | noun | pressure, stress, burden

HSK 2 vocabulary: ~200 new words added at level 2 (cumulative 498). Comprehensive table with Chinese, pinyin, English, part of speech, and examples.

HSK 5 | noun | antibody; protein produced by the immune system to fight pathogens

N1 grammar pattern 〜が最後: expressing that once something happens it cannot be undone or will inevitably lead to a (usually negative) outcome — 'once you do ~, that's it.'

Complete list of all 103 JLPT N5 kanji with stroke count, on-yomi, kun-yomi, meaning, and example words.

HSK 4 | adverb/adjective | absolute or absolutely certain

赤 (seki/shaku/aka): red. JLPT N5 kanji.

HSK 2 | adjective / noun | describes physical or mental well-being

HSK 4 | adjective | having a connection or relationship to the subject at hand

HSK 5 | noun/verb | a hesitating worry or reservation that holds one back from acting

We have two boards of the same size. A move starts by choosing one cell and placing a finger on it. After that, the finger walks through adjacent cells. Every time the finger moves from one cell to another, the two orbs in those cells are swapped.

HSK 3 | noun | environment, surroundings — the physical or social context around you

水 (water): 4 strokes, JLPT N5. On: スイ. Kun: みず.

HSK 4 | adjective | pessimistic; pessimism

Learn to talk about your hobbies, ask yes/no questions, and use the -ad- suffix for ongoing activities.

HSK 4 | noun | a consistent pattern or natural law governing events

HSK 3 | grammar pattern | passive sentence marking an action done to the subject, often with an unwanted result

HSK 6 | verb/noun | to examine systematically by breaking into components

Sindarin adjectives: post-nominal position, lenition after nouns, plural forms, and the copula 'to be'.

HSK 5 | adjective/verb | conspicuously noticeable; to highlight or protrude

HSK 3 | measure word | a unit of time lasting sixty seconds