brain

調べる (しらべる / shiraberu): to investigate, look up. N4 level Japanese vocabulary.

HSK 3 | noun | a number used to identify or contact something

HSK 5 | verb / noun | to raise capital; the act of financing

Sindarin complex sentences: subordinate clauses, relative clauses with i, embedded questions, temporal clauses, and attested examples from Tolkien's texts.

Drazil sends a sequence of movement commands. Each '+' moves Dreamoon one step to the right and each '-' moves one step to the left. We know the original command string and also the string that Dreamoon receives. The received string may contain '?

HSK 5 | conjunction | not only that; furthermore; what is more

Learn vocabulary for medical situations and healthy habits, and master the grammar patterns 应该 and 建议 for giving and receiving health advice.

前 (before, front): 9 strokes, JLPT N5. On: ゼン. Kun: まえ.

HSK 4 | adjective | having a sharp, unpleasant taste; also describing hardship

HSK 3 | adjective | free from stress or difficulty; comfortable and at ease

HSK 5 | noun | one's sense of self and identification with a group or role

HSK 3 | noun | class, classroom group; work shift; scheduled service

HSK 5 | verb | to present; to emerge; to take on a certain appearance

HSK 5 | adjective | low-carbon; producing or emitting less carbon dioxide

HSK 3 | verb | to review or revise material already studied, especially before an exam

HSK 2 | verb | to retain something in memory; to recall

HSK 1 | noun | coffee

HSK 6 | n | a main claim or point of argument in reasoning or debate

HSK 4 | verb | to nurture and develop a skill, person, or quality

HSK 4 | noun | science and technology as a combined field

HSK 5 | noun | an ordered set of steps or a computer program

HSK 4 | verb/noun | a formal public statement or announcement

HSK 4 | verb | to collect, to gather

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

HSK 4 | noun | a mechanism or organized system for how something works

HSK 3 | noun | playground, sports field, schoolyard

HSK 1 | conjunction | introduces a reason or cause, paired with 所以

Full tables for personal, reflexive, and demonstrative pronouns; the cum enclitic; and the absence of a true 3rd-person personal pronoun.

HSK 5 | verb | to emerge; to spring up; to appear in abundance

N1 grammar pattern 〜きらいがある: expressing a negative tendency or inclination — 'has a tendency to' when the tendency is considered a fault or problem.

N1 grammar pattern 〜ものを expressing regret about an unrealised alternative or reproach toward someone who failed to do something they should have. Literary and formal register.

HSK 3 | adjective | feeling the need to sleep

HSK 5 | noun/adjective | democracy; democratic governance

Learn vocabulary for digital technology and media, and use 用 + tool + V and 关于 + topic constructions to discuss technology in natural Mandarin.

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

HSK 1 | particle | softens suggestions and expresses tentative assumptions

HSK 5 | noun/adjective | freedom, liberty; free, unrestricted

HSK 5 | verb / noun | to appeal, to call for, to urge; an appeal, a call

〜ば: JLPT N4 grammar pattern. Usage, structure, examples, and comparison with similar patterns.

HSK 2 | verb | to communicate information to someone

HSK 1 | pronoun/determiner | interrogative asking for selection among options

HSK 4 | verb | to give special weight or importance to a point

Develop the vocabulary and oral patterns for delivering formal presentations, reports, and interactive talks in Chinese professional and academic settings.

Regular and irregular comparative and superlative adjectives, formation of comparative and superlative adverbs, and ablative of comparison vs. quam.

HSK 1 | phrase | confirms a factual statement; equivalent to 'yes, that is correct'

Essential Japanese vocabulary for stores, prices, shopping, money, bargaining. N1 level reference with readings, romaji, and examples.

HSK 2 | adjective | describes something normal or not exceptional

HSK 3 | adverb | introduces a result that is the opposite of what was expected or intended

HSK 1 | adjective | wrong, incorrect, mistaken

HSK 5 | verb | to distribute and assign resources or personnel

HSK 1 | noun | one's elder sister

〜てあげる: JLPT N4 grammar pattern. Usage, structure, examples, and comparison with similar patterns.

HSK 3 | verb / noun | to plan, intend to do something; a plan or intention

HSK 4 | noun | the fundamental nature or essence of something

HSK 5 | noun / adjective | an established norm or benchmark; conforming to the norm

HSK 4 | verb | continuing a state or condition over time

HSK 1 | noun | train, railway

HSK 3 | noun | a fundamental rule or standard guiding behavior

N1 grammar pattern 〜にもかかわらず: expressing contrast or concession — despite, in spite of, even though.

HSK 5 | verb / noun | to create; to bring into existence

HSK 4 | noun | reference materials, data, or information sources

HSK 4 | verb | shielding someone or something from harm

HSK 5 | n | the angle or standpoint from which something is seen or narrated

HSK 5 | verb/noun | to communicate; mutual exchange of information or feelings

Full guide to writing Sindarin in Tengwar: Standard Mode and Mode of Beleriand — with letter tables, vowel placement rules, and practice tips.

Master all four uses of 〜によって at N3: agent in passive, means/method, cause, and variation depending on condition.

HSK 3 | verb / noun | to contact, to get in touch; connection, link, relationship

HSK 3 | noun / adjective | major field of study; specialized skill or knowledge

HSK 5 | verb | to check and confirm the accuracy or truth of information

HSK 3 | adjective | freely giving; composed and graceful in manner

Learn to express where things and people exist using あります and います, with the に and で particles for location.

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

HSK 4 | noun | a raised surface or an opportunity base for activity

HSK 4 | adjective | something that must exist or be done

HSK 6 | verb | to promote and carry forward something of cultural or moral value

HSK 3 | adverb / expression | expresses compulsion arising from circumstances, not personal will

HSK 3 | adjective | negative, passive, pessimistic — opposite of 积极

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

Learn how direction complements combine with verbs to describe movement toward or away from the speaker, a key feature of Mandarin spatial expression.

HSK 5 | n/v | the act or art of telling a story; narrative mode in literature

HSK 1 | verb | to close, to shut, to turn off

HSK 3 | grammar pattern | 把 sentence with result complement 完 indicating complete disposal

HSK 4 | verb / noun | to report; to brief; a report

HSK 4 | noun | the sensation perceived by the tongue when eating or drinking

HSK 5 | verb/noun | to guide and direct an organisation or group; a leader or the act of leadership

We are given a list of integers and a set of queries. Each query asks how many contiguous subarrays of the list have a greatest common divisor equal to the query value.

HSK 5 | noun | a concrete example or real-world instance used to illustrate a point

Consolidate B1 grammar patterns and HSK 4-specific vocabulary through integrated review exercises and extended practice.

Express additive and cumulative relationships using 不但...而且, 既...又, and 不仅...还 at B1 level.

HSK 4 | noun | the central idea or topic of a work or discussion

HSK 1 | verb | to sit, to take (a vehicle)

HSK 1 | noun/time word | the current day; used at the start of a sentence or before the verb

朝 (chou/asa): morning. JLPT N5 kanji.

Complete N2 kanji reference: 633 new kanji beyond N3, organized by radical/theme. Readings, meanings, compound words, and common confusion pairs.

HSK 5 | noun | a critical moment of serious danger, difficulty, or instability

Describe symptoms, answer a doctor's questions, and understand medical instructions in Chinese.

Immersion techniques for Esperanto — Muzaiko radio, Vikipedio reading, Pasporta Servo travel, and the Universala Kongreso.

HSK 5 | noun | the average height of the ocean surface used as a reference point

HSK 3 | adverb | describes slow, incremental change over time