英語は「単語力」がすべての土台！
Many students ask me:
“How many English words do I need to know?”
「英語は何語覚えればいいですか？」
This is a very good question. The answer is simple:
Vocabulary size is the foundation of English ability.
語彙力は英語力の土台です。
Let’s look at what research shows.
How Many Words Do Native Speakers Know?
English-speaking children learn thousands of words every year. Here are typical vocabulary sizes for native speakers:
That may sound surprising. But remember:
📌 Native speakers learn about 1,000–3,000 new words every year.
Mostly from:
📖 Reading
Not memorizing word lists.
📚 The Secret to Vocabulary Growth: Reading
Many students think:
“I need to memorize more vocabulary.”
But the real secret is:
Read more.
Research shows that students who read more learn more vocabulary naturally.
Here is an estimate:
So remember:
Reading strongly increases vocabulary.
読書量＝語彙力
This is one of the most important truths in language learning.
🎯 How Many Words Do You Need?
Many English tests are connected to vocabulary size.
Here are approximate levels:
📌 Typical Japanese university students:
Usually A2–B1 level
That means:
👉 2,000–4,000 words
This is a good starting point—but there is room to grow.
🚀 How to Build Vocabulary Faster
If you want to improve your English, here are the most effective methods:
📖 Read Every Day
Books, articles, graded readers, novels
Reading is the #1 way to grow vocabulary.
🎧 Listen to English
Watch movies
Listen to podcasts
Use YouTube
Listening helps you remember words naturally.
✏️ Write Regularly
Keep a journal
Write short paragraphs
Use new words
Writing helps make vocabulary active.
🌏 Study Abroad or Travel
Real communication builds vocabulary quickly.
Even short trips help.
📚 Review Words Many Times
Repetition is important.
You must see words again and again.
⭐ How Many Words Do YOU Know?
Try to estimate your level:
☐ about 1,000 words (A1)
☐ about 2,000 words (A2)
☐ about 4,000 words (B1)
☐ about 7,000+ words (B2)
Think about this:
👉 What is your goal?
📖 My Advice to Students
If you want to improve your English:
Read more.
Not once a week.
Not once a month.
Every day.
Even:
10 minutes
15 minutes
1 short article
makes a difference.
Vocabulary grows slowly—but steadily.
Like this:
📚
📚📚
📚📚📚
📚📚📚📚
Year after year.
Final Message
English ability is not magic.
It is not talent.
It is not luck.
It is:
Vocabulary + Time + Reading
If you remember one thing from this article, remember this:
The more you read, the more words you learn.
読めば読むほど語彙は増える。
And that leads to:
✔ Better reading
✔ Better listening
✔ Better speaking
✔ Better writing
Everything begins with vocabulary.
