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English · C1

C1 English: advanced

C1 is for using English with control in academic and professional settings: putting the emphasis where you want it, making careful claims, and writing concisely and formally.

12 grammar lessons, 76 words in 4 topic decks, 10 graded texts, and writing and speaking practice with AI feedback.

What you can do at C1

What learners find hard at C1

Inversion (never have I seen…), cleft sentences, hedging (it would seem that…), and the compact structures of formal writing: nominalisation, participle and reduced relative clauses.

What the C1 lessons cover

Emphasis and focus

Never have I seen…, what I need is…: inversion and cleft sentences.

Hedging and stance

It would seem that…, arguably, to some extent: claims you can defend.

Concise formal writing

Nominalisation, participle clauses and reduced relative clauses for professional and academic English.

Cause, result and concession

Owing to, consequently, hence, much as I like the idea…: the connectors of a written argument.

All 12 C1 grammar lessons

Free to read, with examples and practice questions.

  1. Never have I seen…: inversion for emphasis
  2. What I need is…: cleft sentences for focus
  3. It would seem that…: hedging and stance
  4. Should you need…, Had I known…: inverted conditionals
  5. The rapid growth of…: nominalisation in academic and professional writing
  6. We recommend that she rest: the subjunctive
  7. The woman sitting by the window: reduced relative clauses
  8. Having finished the report, she left: participle clauses
  9. The meeting over, we went home: absolute clauses
  10. Much as I like the idea…: concession and contrast
  11. I hope so, so do I: ellipsis and substitution
  12. Owing to the delay…: cause and result in formal writing

C1 vocabulary

Reading at C1

Questions

What's the difference between B2 and C1?

At B2 you can say what you mean. At C1 you can say it the way you intend: with the right emphasis, tone and level of certainty, and concisely in formal writing.

Is there a C2 level in the course?

Yes, but it is small and new: one unit of six lessons on implication, irony, register and focus, with a deck and four readings. Like the rest of the course, it is still awaiting review by English teachers.

Can AI correct my writing at C1?

The app gives AI feedback on writing tasks, pointing out grammar, word choice and register. Like any AI it can be wrong, so treat it as a second opinion. It never sets your level on its own.