Learn English C1 — near-native fluency for demanding settings
At C1, English stops being a limitation. You can express yourself fluently and spontaneously, negotiate and argue a position, and understand implicit meaning in demanding academic and professional texts.
Try the first unit freeHow long does this level take? 10-14 weeks
What does C1 actually mean?
C1 is 'advanced user' — you can express yourself fluently and spontaneously without obviously searching for words, and use English flexibly and effectively for social, academic, and professional purposes.
What you'll be able to do after C1
- Express yourself fluently and spontaneously, without obvious hesitation
- Use English flexibly for social, academic, and professional purposes
- Produce clear, well-structured, detailed text on complex subjects
- Understand demanding, longer texts and recognize implicit meaning
- Negotiate and argue a position persuasively in a meeting or interview
- Follow fast native-speed conversation, including idioms and cultural references
What you'll do every day
Vocabulary
Nuanced, idiomatic, and field-specific vocabulary
Grammar
Advanced structures, subtle tense distinctions, and inversion for emphasis
Listening
Fast native speech, accents, and debates
Speaking
Negotiate, persuade, and speak at length coherently
Sample sentences you'll learn in C1
Had I known the deadline earlier, I would have planned differently.
Inversion for a formal conditional — an advanced, literary style.
Not only did the project succeed, but it also came in under budget.
Inversion after a negative opener, for emphasis.
The findings, while preliminary, suggest a clear trend.
'While' used mid-sentence as a formal contrast.
I take your point, but I'd push back on the timeline.
A natural, idiomatic way to disagree professionally.
A negotiation
We were hoping to bring the deadline forward by two weeks.
We were hoping to bring the deadline forward by two weeks.
That's tight, but it might be workable if we adjust the scope.
That's tight, but it might be workable if we adjust the scope.
What would you need from us to make that happen?
What would you need from us to make that happen?
A confirmed budget by Friday, and we can commit to the new date.
A confirmed budget by Friday, and we can commit to the new date.
The C1 exam
At the end of the level, a mock exam built in the style of advanced exams like IELTS or Cambridge C1 Advanced — 4 skills: listening, reading, writing, speaking.
Lerniyo's exam is built in the style of internationally recognized exams (IELTS, Cambridge) — it is not an official registration with any of those institutes. The Lerniyo certificate is a completion certificate for our own curriculum.
See the full C1 exam guideWhat will you learn in English C1?
- Inversion and emphasis structures
- Advanced conditionals and hypotheticals
- Nuanced connectors and academic register
- Idioms and collocations
- Negotiation and persuasion language
- Understanding accents and fast native speech
- Writing structured essays and reports
- Advanced phrasal verbs
- Subtle differences: make vs. do, say vs. tell
- Exam strategies for top-band scores
Learn English C1 with Lerniyo
Most apps explain grammar using confusing jargon or a third language, adding difficulty on top of difficulty. Lerniyo explains everything in a language you actually understand, so you focus on English, not on decoding the explanation.
Want to know your level now?
Try the level test