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Muse English is a free English learning app with daily lessons across all 6 CEFR levels (A1 Beginner to C2 Proficient). Every day brings new vocabulary, a real podcast conversation, shadowing practice, grammar and quizzes — all at museenglishapp.com.
📚 Vocabulary
10 new words Learn new words with real examples and audio.
Podcast: The Science Of Training
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📝Grammar: 3B: Articles - a / an, the, no article
Use **a / an** the first time you mention a singular countable noun. It says what kind of thing it is, not which one. Her coach wrote **a** macrocycle for the season. The same **a / an** appears in **What ...!** exclamations and frequency phrases. What **a** neuromuscular performance that was! She lifts four times **a** week. Switch to **the** once the noun is already mentioned or clearly identified. She wrote **a** macrocycle. **The** macrocycle peaks in June. **The** also marks the only one, well-known places, and superlatives. **The** sun, **the** gym on Main Street, **the** best ergogen
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❓ Frequently Asked Questions
What level is this The Science of Training lesson?
This is a C2 Proficient (C2) English lesson from Muse English's daily series on 2026-09-28.
How can I practice speaking?
Use the shadowing feature in the free Muse English app — listen to each sentence, repeat it, and get your pronunciation scored.
Is Muse English free?
Yes. Daily lessons, podcasts, vocabulary, shadowing practice and quizzes are free at museenglishapp.com.
How many words will I learn?
This lesson teaches 10 new words with photos, meanings, examples and pronunciation audio.
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