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Những điều thú vị về khoa học

25 tháng 8, 2026 12 min read

The Science of Language Retention

Most language learners aren't lacking discipline or talent — they're up against a well-documented feature of how memory works. This piece breaks down what 140 years of research actually says about forgetting, and the

What Kind of Word Is It - and What Is It Doing?
30 tháng 7, 2026 15 min read

What Kind of Word Is It - and What Is It Doing?

A noun is not the same as a subject, and a verb does not always tell the whole story of a sentence. This guide explains the two basic levels of grammar—what kind of word something is and what role it performs—then sho

30 tháng 7, 2026 21 min read
Series · Part 2/2

Who Did What to Whom? How Languages Signal Roles in a Sentence

English relies heavily on word order. Japanese places particles after noun phrases. Hungarian uses case endings. Spanish combines several signals, while Mandarin often depends on word order, constructions, and context

30 tháng 7, 2026 16 min read
Series · Part 1/2

A Word Is Not the Same as Its Role: Understanding Parts of Speech and Sentence Functions

Why can the same noun be the subject in one sentence and the object in another? Is the subject always the person who performs an action? And does every word belong permanently to a single part of speech?

Vì sao chúng ta quên - và vì sao lặp lại ngắt quãng hiệu quả
9 tháng 7, 2026 8 min read

Vì sao chúng ta quên - và vì sao lặp lại ngắt quãng hiệu quả

Bất kỳ người học nào cũng từng gặp hiện tượng này: một từ mới hôm nay còn rõ như pha lê, nhưng một tuần sau lại hoàn toàn không thể nhớ ra. Dù trải nghiệm này thường gây bực bội và khiến ta nghĩ rằng đó là thất bại cá

1 tháng 6, 2026 9 min read

Does “Knowing 5,000 Words” Mean the Same in Every Language? - Part 2.

Does knowing 5,000 words mean the same thing in English, Spanish, Mandarin, Arabic or Japanese? Learn why vocabulary size depends on word families, grammar, morphology and writing systems.

28 tháng 5, 2026 10 min read
content_depth.deep_dive Series · Part 6/6

How Should Language Learners Count Vocabulary? A Practical Global Guide

Vocabulary size is useful, but it does not mean the same thing in every language. Learn how to think about words, word families, roots, characters, suffixes and real usage when learning a language.

28 tháng 5, 2026 10 min read
content_depth.deep_dive Series · Part 5/6

Vocabulary in Agglutinative Languages: Turkish, Hungarian, Finnish and Korean

In agglutinative languages such as Turkish, Hungarian, Finnish and Korean, words can become long and complex. Learn why vocabulary learning is not just about counting words, but recognizing roots, suffixes and pattern

28 tháng 5, 2026 9 min read
Series · Part 4/6

Vocabulary in Arabic and Semitic Languages: Roots, Patterns and Dialects

Learning Arabic vocabulary is not just about memorizing words. Discover how roots, patterns, Modern Standard Arabic and dialects change what it means to “know” a word.

28 tháng 5, 2026 11 min read
Series · Part 3/6

Vocabulary in Mandarin and Japanese: When “Words” and Writing Systems Do Not Match

Learning Mandarin or Japanese is not only about counting words. Discover why characters, kanji, kana, tones, compounds and word segmentation change how vocabulary knowledge works.

28 tháng 5, 2026 10 min read
Series · Part 2/6

Vocabulary in European Languages: Why Spanish, French, German and Russian Feel Different

Does learning 5,000 words mean the same thing in Spanish, French, German or Russian? Learn how grammar, word families, cognates, cases and compounds change the way vocabulary works in European languages.

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28 tháng 5, 2026 9 min read
Series · Part 1/6

Does “Knowing 5,000 Words” Mean the Same in Every Language?

Does knowing 5,000 words mean the same thing in English, Spanish, Mandarin, Arabic or Japanese? Learn why vocabulary size depends on word families, grammar, morphology and writing systems.

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