brain
tamnd's digital brain — notes, problems, research
43815 notes
HSK 5 | phrase / conjunction | on the other hand, from another angle
HSK 6 | verb/noun | to synthesize existing research; a comprehensive literature review
Learn 〜にとって (for, from the perspective of) — the N3 pattern for marking the evaluating perspective in value judgments and assessments.
HSK 2 | adverb | superlative marker placed before adjectives and verbs
HSK 4 | adverb | expressing reluctant necessity
Japanese food and drink vocabulary: common foods, drinks, cooking methods, restaurant expressions, and traditional Japanese cuisine terms.
火 (fire): 4 strokes, JLPT N5. On: カ. Kun: ひ、ほ.
HSK 3 | adverb | almost, nearly, hardly — very close to a condition but not quite reaching it
A comprehensive review of all A1 grammar patterns and the top 50 most useful HSK 1 words, with practice exercises.
Learn how to use 〜はもとより (wa motoyori) to express 'not only ~ but also' when the first item is so obvious it goes without saying. Includes structure, nuance, examples, and comparisons.
読 (doku/toku/tou/yo-mu): read. JLPT N5 kanji.
HSK 5 | noun | a specific instance or example used for analysis, typically in law, medicine, or business
入 (enter): 2 strokes, JLPT N5. On: ニュウ. Kun: い-る、い-れる、はい-る.
HSK 6 | n | the continuous thread of cultural or textual tradition; the vein of meaning running through a text
HSK 5 | verb | to list on stock market; to come onto the market
HSK 3 | adjective/adverb | arriving or happening at the scheduled time
Comprehensive review of B2-level grammar patterns, key vocabulary, and communication strategies developed across the 25-lesson HSK 5 curriculum.
HSK 3 | adverb | marks a turning point after which everything that follows is different
HSK 4 | adverb | expressing immediate action without delay
Learn how to express passive constructions in Chinese using 被, 让, and 叫, and understand when passive voice is appropriate in Mandarin.
We are given a collection of laptops. Each laptop has a price and a quality value. Prices are all distinct, and qualities are all distinct. Dima believes that a more expensive laptop must always have better quality. Alex claims that this is not necessarily true.
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.
川 (sen/kawa): river. JLPT N5 kanji.
HSK 1 | number | one hundred; used in compound numbers
We have three types of balloons: red, green, and blue. Each table at a banquet requires exactly three balloons, and no table can have all three balloons of the same color.
HSK 1 | noun | shop, retail store
HSK 5 | verb / noun | to demonstrate the truth of something; a document proving a fact
HSK 3 | verb | to solve, resolve, or settle a problem or difficulty
HSK 4 | verb | to have thorough command of a skill or knowledge
HSK 5 | verb/noun | deliberate alteration of something existing
Learn 〜わけにはいかない (can't possibly do ~, not in a position to ~) — expressing social, moral, or practical impossibility.
HSK 3 | adjective | feeling tired or worn out
HSK 3 | adjective/adverb | done without unnecessary delay when needed
HSK 4 | verb / noun | establishing or maintaining a link between people or things
HSK 3 | adjective/verb | to feel let down; to be disappointed
HSK 5 | verb / noun | to back or endorse; backing, support
HSK 4 | conjunction / phrase | for example; for instance; such as
HSK 4 | verb | to think carefully about something
HSK 5 | verb | to research and discuss; to deliberate in a seminar setting
Learn how to organize information in temporal order using 先...再/然后...最后 and related sequence markers essential for narration and instruction.
HSK 5 | noun | media; mass media; communications industry
HSK 5 | adjective/noun | treating all parties equally without bias or favoritism
〜ば: JLPT N4 grammar pattern. Usage, structure, examples, and comparison with similar patterns.
Esperanto vocabulary for computers, internet, social media, technology, and modern digital life.
HSK 4 | verb / noun | rallying people to a cause or action
Sindarin adjectives: post-nominal position, lenition rule, singular and plural agreement, comparison forms, and how to form adverbs.
HSK 5 | noun/verb | insight gained through experience; to realize through reflection
We have an $n times m$ chocolate bar made of unit squares. A cut is either horizontal or vertical, must follow grid lines, must lie strictly inside the chocolate, and cannot duplicate a previous cut.
空 (kuu/sora): sky. JLPT N5 kanji.
HSK 3 | adverb | confirms that reality matched a prior prediction or expectation
HSK 5 | noun | a distributed digital ledger technology for recording transactions securely
HSK 3 | verb | to understand through listening, to catch what is said
Japanese family vocabulary: parents, siblings, relatives, honorific vs. plain forms, and family-related expressions.
HSK 1 | verb | to be acquainted with someone; to recognize something
HSK 4 | noun | a person who is ill or receiving medical treatment
HSK 3 | noun | vinegar (condiment); colloquially, jealousy in a romantic context
A comprehensive C1 mastery audit, 300 essential advanced vocabulary items, precise C1 can-do statements, and a structured roadmap for reaching C2.
天 (heaven, sky): 4 strokes, JLPT N5. On: テン. Kun: あめ、あま.
Express regret, missed opportunities, and relief using 要是...就好了, 早知道...就, 可惜, and related patterns at B1 level.
HSK 6 | verb | to look at carefully and critically; to examine with discernment
HSK 3 | verb | to lose or accidentally leave something behind
空 (sky, empty): 8 strokes, JLPT N5. On: クウ. Kun: そら、あ-く、から.
HSK 5 | verb | to promote; to facilitate; to further
HSK 5 | adjective | feeling relief and peace of mind after worry or tension is resolved
HSK 5 | verb | to stimulate, trigger, or arouse a feeling, potential, or reaction
Learn 〜にあたって and 〜に当たり to mark significant occasions — openings, ceremonies, launches — in formal Japanese speeches and documents.
Master the art of indirect communication by learning how to express complex limitations, obligations, and partial negations in professional Japanese.
HSK 4 | adjective | fully adequate in amount or degree
Achieving mastery in Chinese academic defense and Q&A: from competent performance to intellectual authority.
HSK 3 | adv/adj | to a total or absolute degree
HSK 4 | adjective / noun | confident; self-confident; confidence
HSK 5 | verb | to lead the way forward, often inspiring others to follow
HSK 5 | adjective / verb | confused, perplexed, puzzled; to confuse, to perplex
JLPT N4 kanji 頭 — readings, vocabulary, stroke order, mnemonic, and common confusion pairs.
Where to find other Sindarin learners and scholars — Discord servers, Reddit, forums, and academic mailing lists.
HSK 3 | verb | to feel at ease; to set one's mind at rest
HSK 1 | verb | to read text aloud or to study at an institution
HSK 3 | noun/verb | a repeated behavior, or to be accustomed to something
HSK 3 | noun | playground, sports field, schoolyard
HSK 2 vocabulary: ~200 new words added at level 2 (cumulative 498). Comprehensive table with Chinese, pinyin, English, part of speech, and examples.
HSK 3 | noun | a period of time away from work or school
HSK 3 | noun | innate talent or acquired ability
HSK 4 | verb/noun | to threaten; threat
Complete N2 exam preparation: format breakdown, section strategies, 6-month study plan from N3, 60 kanji reading drills, 60 grammar drills, and most commonly failed patterns.
HSK 5 | verb/noun | gradual evolution or development over time
Master all five uses of cum with the subjunctive and indicative, including the tricky cum inversum.
HSK 4 | conjunction | although; even though; though
HSK 1 | conjunction | introduces a result or conclusion, paired with 因为
土 (do/to/tsuchi): earth. JLPT N5 kanji.
HSK 4 | preposition | following a standard or instruction
HSK 5 | verb | to urge someone to do something through supervision or prompting
HSK 4 | adjective / verb | having or providing plentiful variety and substance
We are given an n×n board, where each cell contains either an 'x' or an 'o'. The task is to check a local property for every cell: whether the number of orthogonally adjacent cells containing 'o' is even.
HSK 5 | noun | the body of rules and regulations enforced by the state
Learn how to use 〜に基づいて (ni motozuite) to express 'based on' when grounding decisions, arguments, or actions in formal sources. Includes structure, nuance, examples, and comparisons.
HSK 4 | noun | channels of mass communication
HSK 2 | verb | verb-object compound meaning to arrive or show up after the expected time
Master all four uses of 〜によって at N3: agent in passive, means/method, cause, and variation depending on condition.
HSK 4 | conjunction / adverb | in short; in summary; in a word
HSK 6 | adv | suggesting that an action is harmless or worth trying; equivalent to 'might as well' or 'why not'