C1Effective Operational Proficiency
C1 · Advanced
19 free lessons. Start with lesson 1, or open any topic you need.
Guided study600–800 hrsGSE range76–84
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C1 lesson path
19 of 19 lessons available now
01Advanced tense and aspect reviewGrammar · Review English tenses at an advanced level and choose simple, continuous, or perfect forms to show time, duration, and completion clearly. Free exercises.Open lesson 02Narrative tenses and viewpointGrammar · Learn to tell a story with the past simple, past continuous, and past perfect, and use the present tense to make it feel live. Practice with free exercises.Open lesson 03Mixed and implied conditionalsGrammar · Learn mixed conditionals that link past and present, and implied conditions with without and otherwise: “Without her warning, we would have failed.” Free exercises.Open lesson 04Advanced modal meaning and stanceGrammar · Use modal verbs to show how sure you are, give advice, and criticize politely: “You might want to check,” “You should have checked.” Practice with free exercises.Open lesson 05Register, tone, and formalityVocabulary & topic · Learn to change your tone and formality for a friend, a coworker, a client, or a formal notice while keeping your message clear. Practice with free exercises.Open lesson 06Inversion after negative expressionsGrammar · Learn inversion after negative words for formal emphasis: “Never had we encountered that error,” “Only after the test did we understand.” Free exercises.Open lesson 07Advanced emphasis and cleft structuresGrammar · Add emphasis with cleft sentences, fronting, and emphatic do: “It was the testing that caused the delay, not the design.” Practice with free exercises.Open lesson 08Collocation and lexical precisionVocabulary & topic · Learn advanced collocations to replace vague words with precise ones: “conducted a detailed analysis,” “made substantial progress.” Practice with free exercises.Open lesson 09Connotation, nuance, and implied meaningVocabulary & topic · Understand what people suggest without saying it directly, like “not entirely unsuccessful,” and choose words with the right tone. Practice with free exercises.Open lesson 10Participle clausesGrammar · Learn participle clauses like “Knowing the route, Maya led the group” and “Having checked the figures,” and keep the subject clear. Practice with free exercises.Open lesson 11Reduced relative clausesGrammar · Learn reduced relative clauses to shorten sentences: “Applicants living outside the region” instead of “who live outside the region.” Free practice exercises.Open lesson 12Nominalization and information densityGrammar · Learn nominalization, turning verbs into nouns like reject into rejection, to write more formally while still showing who did what. Practice with free exercises.Open lesson 13Hedging and cautious languageGrammar · Learn hedging language to make careful claims, like “The results suggest that the app may improve sleep,” and know when to sound confident. Free exercises.Open lesson 14Advanced discourse markers and cohesionGrammar · Make longer writing and talks easy to follow by linking ideas with nevertheless, in other words, and similar markers, without overusing them. Free exercises.Open lesson 15Concession, contrast, and counterargumentGrammar · Learn to admit a fair opposing point and still argue your case with although, despite, admittedly, and even so. Practice with free interactive exercises.Open lesson 16Referencing and avoiding repetitionGrammar · Avoid repeating the same words with it, this one, do so, and the former and the latter, while keeping your meaning clear in longer texts. Free exercises.Open lesson 17Organizing complex spoken argumentsVocabulary & topic · Learn to give and defend a spoken argument with clear signposts like “There are two reasons” and “I will return to that.” Practice with free exercises.Open lesson 18Idiomatic language and fixed expressionsVocabulary & topic · Learn advanced expressions like “get to the point,” “that being said,” and “weigh the pros and cons,” and when they sound natural. Practice with free exercises.Open lesson 19Phrasal verbs in formal and informal contextsVocabulary & topic · Learn when to use a phrasal verb or a formal one-word verb, like look into or investigate, in emails and reports. Practice with free interactive exercises.Open lesson
By the end of C1, you can…
- Understand demanding, longer texts and recognize implicit meaning and stance.
- Express ideas fluently and spontaneously with little obvious searching.
- Use language flexibly and effectively for social, academic and professional purposes.
- Produce clear, well-structured discourse on complex subjects with controlled cohesion.