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tamnd's digital brain — notes, problems, research
42053 notes
N1 grammar pattern 〜といえども: formal concessive expressing 'although/even if/even though X, nevertheless Y.' Used in formal speeches, legal texts, academic writing.
HSK 4 | verb / noun | to encourage; encouragement
HSK 4 | verb/noun | to work together toward a shared goal
HSK 5 | adjective | restricted in quantity, scope, or degree; not unlimited
HSK 5 | noun / verb | a bank loan; to borrow money from a financial institution
HSK 7 | verb | surgical closure of wounds or incisions using sutures or staples
HSK 3 | noun | luggage, baggage, travel bags
HSK 5 | verb / noun | to argue opposing sides; formal debate
HSK 5 | verb | to drive progress or move something forward systematically
N1 grammar pattern 〜のみか: literary 'not only X but also Y,' escalating from X to the more surprising/larger Y. Formal and literary register.
HSK 4 | adverb | expressing something that has always been true, or (negated) never
Learn 〜てからというもの to express a fundamental, sustained change that began at a specific turning point.
HSK 4 | adverb/adjective | absolute or absolutely certain
HSK 3 | adjective | feeling joyful and pleased
HSK 3 | noun | a project or planned undertaking; a listed item or entry
HSK 5 | noun/verb | the tendency to align one's behavior with the group
HSK 5 | noun | performance; capability; functional properties of a product or system
HSK 4 | verb | to stop pursuing or holding onto something
HSK 4 | adjective | conforming to reason, fairness, or accepted principles
HSK 4 | verb | to willingly take or agree to something offered
HSK 5 | noun | a physical or mental feature indicating a condition or disease
HSK 1 | number | the digit nine; associated with longevity and imperial power
HSK 5 | noun | an economic, practical, or personal need or demand for something
HSK 5 | verb/noun | to limit or restrict the scope of action; a constraint or limitation
HSK 3 | adjective | serious, earnest, conscientious, diligent — describes a careful and dedicated attitude
Complete N2 kanji reference: 633 new kanji beyond N3, organized by radical/theme. Readings, meanings, compound words, and common confusion pairs.
HSK 3 | adjective/adverb | nearly equal or approximately
Sindarin vocabulary for food, drink, and dining — with attested and Neo-Sindarin words, plus basic sentence construction practice.
Produce and evaluate scholarly work in Esperanto using correct academic register, citation practice, and the resources of the Esperanto research community.
HSK 5 | verb/noun | to shape metal or other materials by melting and moulding, or metaphorically to forge character
Learn 〜うちに (while, before it's too late) — the N3 temporal pattern expressing a window of opportunity.
HSK 5 | noun/adjective | green (colour); eco-friendly, sustainable, clean
HSK 3 | noun | temperature — measurable degree of heat or cold
HSK 5 | noun | financial award given to support a student's education
HSK 3 | grammar pattern | additive correlative conjunction expressing escalation
HSK 4 | verb/noun | to infer, to speculate; inference, speculation
HSK 2 | verb phrase | to make or place a telephone call
HSK 5 | verb/noun | fundamental shift in state or direction
We are given a tree with n nodes, where each edge has a positive length. A tree guarantees that there is exactly one simple path between any two nodes.
HSK 6 | verb | to bring together disparate elements into a unified whole
Learn 〜にあたって and 〜に当たり to mark significant occasions — openings, ceremonies, launches — in formal Japanese speeches and documents.
HSK 1 | particle | asks 'and what about...?' or softens a statement
〜ておく: JLPT N4 grammar pattern. Usage, structure, examples, and comparison with similar patterns.
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 2 | noun | noodles, a staple food made from wheat flour
HSK 5 | verb/adjective | to relieve someone's worry; feeling comforted or relieved
HSK 1 | verb | to help, to assist
HSK 5 | verb/noun | to assess, evaluate, or appraise performance; an assessment
HSK 2 | measure word | counts songs and poems as complete compositions
HSK 3 | noun | the image or impression someone or something projects
Complete JLPT N5 grammar reference: all ~100 grammar patterns with structure formulas, usage explanations, example sentences (Japanese + romaji + English), and notes on common mistakes.
HSK 5 | adjective/adverb | covering a large area or range; affecting many people or things
HSK 4 | adjective / noun | patient; patience
〜てみる: JLPT N4 grammar pattern. Usage, structure, examples, and comparison with similar patterns.
HSK 1 | adverb | negates verbs and adjectives for present, future, or habitual
HSK 5 | verb/noun | financial loss; to operate at a loss; deficit
HSK 5 | n | the angle or standpoint from which something is seen or narrated
HSK 1 | verb | to return, to go back, to come back
HSK 1 | verb, noun | to answer, to reply, an answer
HSK 3 | adjective | calm and free from noise
HSK 3 | verb | to put down, to set down, to let go of
HSK 5 | conjunction | thus; thereby; consequently; so as to
HSK 5 | verb/noun | natural or observable change in state or condition
We are given a list of people, each with a first name and a last name. For each person, we have the freedom to choose either their first or last name as a handle.
HSK 4 | adjective/verb | abstract; to abstract
Common Japanese sentence patterns organized by JLPT level N5 through N1, with structure, usage notes, and example sentences for each pattern.
HSK 5 | noun | infectious disease; communicable disease; contagious illness
HSK 3 | adjective/verb | widely spread or currently trendy
HSK 3 | adverb / expression | expresses compulsion arising from circumstances, not personal will
HSK 1 | pronoun | interrogative pronoun for location (northern colloquial form)
We are given a single integer n, where n ≥ 12. The task is to find any two composite numbers whose sum is exactly n. A composite number is an integer greater than 1 that has at least one divisor other than 1 and itself.
HSK 2 | verb | to swim; also used as a noun for the sport of swimming
道 (road, way): 12 strokes, JLPT N5. On: ドウ、トウ. Kun: みち.
HSK 3 | verb / noun | to contact, to get in touch; connection, link, relationship
Master the formal grammar patterns used in legal documents, academic writing, and official correspondence, including 〜ものとする, 〜に即して, 〜に反して, 〜をもって, and 〜いかんによらず.
長 (chou/naga-i): long. JLPT N5 kanji.
Master Esperanto's location and movement prepositions, and learn the crucial rule for adding -n to show direction versus static position.
HSK 4 | noun | the pressure of blood circulating in the arteries
父 (father): 4 strokes, JLPT N5. On: フ. Kun: ちち.
HSK 1 | adverb | indicates future repetition of an action
Learn to derive nouns, verbs, adjectives, and adverbs from a single root, and to stack multiple affixes for nuanced vocabulary.
Appleman has a collection of n cards, each labeled with a capital letter. Toastman is allowed to pick exactly k cards, and for each card he picks, Appleman pays him coins equal to the number of Toastman's cards that have the same letter as that card.
HSK 3 | noun | skin, the outer covering of the human body
HSK 5 | noun/verb | the process of making important decisions, especially in policy or management
Learn to describe your daily routine using V + 了 for completed actions and sequence time words.
HSK 4 | adjective | diligent, hardworking
HSK 3 | adjective | slow-witted or physically awkward
社会 (しゃかい / shakai): society. N4 level Japanese vocabulary.
Learn 〜こそ and 〜だからこそ to place emphatic focus on a specific element — 'it is precisely X' and 'precisely because of X.'
HSK 5 | verb | to cause something to move or develop by pulling or leading it forward
Engage with Chinese scientific discourse, technology journalism, and research communication using specialized vocabulary and evidence-based grammar patterns.
HSK 5 | verb/noun | to show how something is done; a model example for others to follow
HSK 1 | noun | a male child
分 (minute, part): 4 strokes, JLPT N5. On: ブン、フン、ブ. Kun: わ-ける、わ-かる.
Express additive and cumulative relationships using 不但...而且, 既...又, and 不仅...还 at B1 level.
Develop strategies for comprehending and taking notes from Chinese academic lectures, including key vocabulary for academic oral communication.
HSK 2 | adjective | describes something normal or not exceptional
An analytical study of Esperanto's linguistic evolution, the Akademio's role, the Ido schism, native speakers, sociolinguistics, and corpus linguistics.
Complete guide to all major Japanese particles: は が を に で から まで と も の か ね よ — with meaning, usage rules, and example sentences.