Learn English Vocabulary in Japanese
日本語訳付きで英語の語彙を効果的に学びましょう。TOEIC・英検対策やキャリアアップに最適。 AI搭載フラッシュカードと間隔反復で、効率よく英単語を暗記できます。
Challenges for Japanese Speakers
L/R Pronunciation
Japanese has a single liquid consonant that falls between English L and R. penguen.io's listening and dictation modes help you train your ear to distinguish these sounds through repeated exposure to native pronunciation.
Articles (a / the)
Japanese has no equivalent of English articles. Knowing which article to use — or when to omit one — requires understanding context. Practice with fill-in-the-blank exercises builds this intuition over time.
Plurals & Countable Nouns
Japanese doesn't distinguish singular and plural nouns the way English does. Learning vocabulary in context helps you internalize which nouns are countable and how plurals work naturally.
Prepositions vs Particles
Japanese particles (は, を, に, で) don't map neatly to English prepositions (in, on, at, for). penguen.io teaches prepositions within example sentences so you learn the right combinations.
TOEIC & EIKEN Preparation
In Japan, TOEIC and EIKEN (英検) are the two most important English proficiency exams. Whether you're aiming for a high TOEIC score for job applications or working through EIKEN levels from 5級 to 1級, vocabulary is the foundation of your success.
TOEIC tests your ability to understand business English in real-world contexts — emails, meetings, announcements, and reports. A strong vocabulary directly translates to higher scores in both the Listening and Reading sections. Many test-takers plateau not because of grammar, but because they simply don't know enough words.
penguen.io's spaced repetition system ensures you review words at the optimal interval, so you retain more vocabulary in less study time. Combined with 6 practice modes, you build the deep word knowledge that exams demand — not just recognition, but recall.
How It Works
Pick a Collection
Choose from curated vocabulary sets organized by topic, level, and exam type. Every word includes its Japanese translation so you always understand the meaning.
Practice 6 Ways
Study with flashcards, multiple choice, fill-in-the-blank, matching games, dictation, and listening exercises. Each mode strengthens different skills.
Remember Forever
Spaced repetition schedules reviews at scientifically optimal intervals. Words move from short-term to long-term memory automatically.
Frequently Asked Questions
Can I learn English with Japanese translations? expand_more
Does penguen.io help with TOEIC vocabulary? expand_more
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Start Learning English in Japanese
日本語訳付きで英単語を学びましょう。無料で今すぐ始められます。