BE850 Ogden's Basic English vs Plain850：核心英文 850詞

Say everything with just 850 words — that was the vision of linguist C.K. Ogden when he created Basic English in 1930. BE850 turns these 850 carefully selected core words into an elegant digital study handbook. Perfect for English beginners, young learners, ESL/EFL students, teachers, and anyone curious about the Basic English system. Five Clear Categories • Operations (100): verbs, prepositions, conjunctions • General Things (400): abstract nouns • Picturable Things (200): concrete, visible objects • Qualities (100): common adjectives • Opposites (50): paired antonym adjectives Bilingual Definitions Each word includes a Chinese definition, English explanation, example sentence, and Chinese translation of the example. UK & US Pronunciation Switch between British and American English speech. Tap to hear any word, definition, or example sentence read aloud. IPA Phonetics Both UK and US IPA transcriptions are shown for every word. Flashcard Practice Full-screen card mode: see the word on the front, tap to reveal the meaning. Filter by category, shuffle order, enable auto-speak. Swipe to mark words as "Got it" or "Review". Progress Tracking See your viewed, remembered, and review counts at a glance. Synonym Expansion Each word comes with 2–3 synonyms to broaden your vocabulary network. Simplified / Traditional Chinese Toggle between Simplified and Traditional Chinese display with one tap. Bilingual Interface Switch the app UI between Chinese and English at any time. Fully Offline All data is built into the app. No internet required, no ads, no sign-up. Learn anytime, anywhere — on your commute, in class, or on the go. --- Based on Charles Kay Ogden's Basic English (1930). The word list is in the public domain; definitions and examples are original.

Plain850 是一個專注於 850 個核心英文詞的簡潔學習工具。 它不是要你背更多、更難的單字，而是幫你把最常見、最基礎、最容易用錯的英文詞重新學穩。 很多英文學習者其實已經認識不少單字，但在真正閱讀、寫作或表達時，仍然會卡在 make、do、get、take、have、in、on、with 這類核心詞的用法。Plain850 的目標，就是讓你用更安靜、更清晰的方式，回到英文的基礎。 主要功能： ・學習 850 個核心英文詞 ・透過「850 單字書」將學習進度視覺化 ・按分類瀏覽單字 ・查看中文、日文、西班牙文說明 ・閱讀簡單 A2 英文文化文章 ・閱讀時可點按單字查看解釋 ・收藏想重溫的單字 ・使用測驗模式檢查記憶 ・支援英文發音 ・無需登入 ・可離線使用 ・免費使用，沒有廣告 Plain850 適合： ・想重新打好英文基礎的人 ・認識很多單字，但核心詞用得不穩的人 ・正在學英文的中文、日文或西班牙文使用者 ・想用碎片時間安靜複習英文的人 ・不喜歡複雜介面、廣告或過度遊戲化學習工具的人 Plain850 的設計理念很簡單： 不是背更多字，而是先把最重要的字學深。 從 850 個核心詞開始，慢慢建立更穩定的英文基礎。