Use of English in C1 Advanced: the 3 parts, the patterns and the techniques

By Claire Farrell

Academic Coordinator at Preptiviti

At C1, Use of English is 28 of the 78 marks in the Reading and Use of English paper, and it is where candidates who passed B2 comfortably tend to lose points. The tasks look the same as at B2. The language they demand does not. Here is each part, the patterns Cambridge repeats, and what to do with the clock.

The tasks are the same as B2 First, the vocabulary is not

At first glance C1 Advanced Use of English looks identical to B2 First. The tasks are the same: Part 2 Open Cloze, 8 questions worth 1 mark each; Part 3 Word Formation, 8 questions worth 1 mark each; Part 4 Key Word Transformations, 6 questions worth 2 marks each.

Yet many students who did well at B2 suddenly struggle to score above 60% at C1. The difference is not the format. It is the level of language required. At C1 you need control of more complex grammar and, above all, a wider and more nuanced vocabulary:

• advanced collocations (utterly ridiculous, take a chance on)
• phrasal verbs (stand out, end up)
• idiomatic expressions (to put one’s foot in it, to wear one’s heart on one’s sleeve)
• sensitivity to register (formal against informal, kids against youths)

In short, C1 is less about knowing rules and more about recognising patterns and using language flexibly and precisely.

Part 2 tests function words, so the gap is usually a preposition, an article or a conjunction

Part 2 is an Open Cloze: a text of 100 to 150 words with 8 gaps, one word per gap, no options given. Students generally find it the hardest part of the paper.

The missing words are rarely content words like nouns or adjectives. They are function words, the ones that hold the content together:

1. Prepositions: in, on, at, to, from, with, by, up, down, back
2. Articles: a, an, the
3. Determiners: many, much, few, any, some, this, that, these, those
4. Pronouns: subject, object, possessive, reflexive and relative
5. Auxiliary verbs: do, did, does, has, have, be, been, being, will
6. Conjunctions: and, if, unless, though, as
7. Particles: to, not
8. Modals: can, should, must, could, would, may, might

Part 2 also asks you to recognise complex structures such as inversions, conditionals and reported speech. Here is an example:

My colleague has just returned from her vacation to Scotland. She must have had a wonderful time, (1) _______ she has been glowing upon her return to work. I have never been to Scotland and was quite envious (2) _______ her account of her adventures there. Not until I heard her stories (3) _______ I wish to travel there.

The answers:

1. BECAUSE, SINCE or AS. Any one of them works. Cause and effect.
2. OF, because the collocation is ENVIOUS OF.
3. DID, because NOT UNTIL forces an inversion and the sentence is in the past.

Technique for Part 2

1. Read quickly for the main idea. 1 minute.
2. Read again focusing on the gaps. Look before and after each one. Look for collocations and patterns. Ask what relationship connects the sentences: contrast, cause and effect, condition, time. 7 minutes.
3. If nothing comes after 30 seconds, move on and come back.
4. Read the text once more and fill what is left. If you are still unsure, make an educated guess. Never leave a blank on a Cambridge exam. 2 minutes.

Part 2 is not easy, but the same structures and collocations come back year after year. Concentrated practice is what makes the pattern visible.

Part 3 catches people because at C1 the word usually changes twice

In Part 3 you get a text of 100 to 150 words with 8 gaps and a root word for each one, which you transform to fit the grammar and the context. You need to know your parts of speech and how prefixes (un-, im-, dis-) and suffixes (-ion, -ous, -ity) work.

At B2 First you are usually expected to make one transformation. At C1 you often need two. Stopping after the first is the single most common mistake.

The temperature on Earth has (1) _______ increased over the past 50 years. 2024 was the hottest year on record. Temperatures have increased 1.6 degrees Celsius (2) _______. Scientists regularly take (3) _______ to keep track of global warming. (4) _______, human beings have not made any major changes to slow down the warming trend.

SIGNIFY · WORLD · MEASURE · BELIEVE

The answers:

1. SIGNIFICANTLY. Two transformations: SIGNIFY (verb) to SIGNIFICANT (adjective) to SIGNIFICANTLY (adverb).
2. WORLDWIDE. One transformation with an uncommon suffix: WORLD (noun) to WORLDWIDE (adverb).
3. MEASUREMENTS. One transformation, and a plural: MEASURE (verb) to MEASUREMENTS (noun).
4. UNBELIEVABLY. Three transformations: BELIEVE to BELIEVABLE to BELIEVABLY to UNBELIEVABLY. When three are needed, the root is usually a B2-level word candidates know well.

Technique for Part 3

1. Read the whole text for the main idea and the links between sentences. 1 minute.
2. Read again and decide what part of speech each gap needs. Look for patterns: adjective plus noun (creative artists), article plus noun (the developments), adverb plus verb (I always misunderstood).
3. Take the root word and apply the prefix or suffix that produces that part of speech. 7 minutes.
4. Read once more. Check plurals, check whether a negative idea in the text calls for a negative prefix, check spelling. Misspelled answers lose the mark. 2 minutes.

The best way to prepare is to learn word families rather than single words. Learn VARY and you should also meet variable, various, variation and invariably.

Part 4 is the hardest part, and almost every answer needs two changes

Part 4 asks you to paraphrase 6 sentences using a key word you are given, in 3 to 6 words, without changing the key word in any way. Each question is worth 2 marks, which normally means two transformations: usually one of grammar and one of vocabulary, sometimes two of grammar.

Bob tends to eat sweets when he feels depressed.
HABIT
Bob _______________________ when he feels depressed.

There are four things you need to recognise to solve Part 4.

1. The grammar patterns Cambridge tests at C1

• Inversions: Little did I know that I had passed the test.
• Cleft sentences: What I wanted to know was why he hadn’t come to the party.
• Passive voice: It is alleged that Jim stole company funds.
• Modals: You might as well come for dinner tonight.
• Conditionals: If you hadn’t asked me to stay home, I would be at the concert right now.
• Reported speech: He denied having lied about his age.
• Comparisons: This restaurant is nowhere near as busy as the fast-food place downtown.
• Reflexive pronouns: The Prime Minister himself came to the school.
• Phrasal verbs: Anna ended up leaving school early for her dentist appointment.

2. Word transformations

Often you have to turn a word from the original into another part of speech. “The wind was so powerful that it knocked over trees” with the key word SUCH becomes “SUCH WAS THE POWER OF THE WIND that it knocked over trees”. The adjective POWERFUL becomes the noun POWER.

3. A change of register

Formal into informal, often through a phrasal verb. “Icy road conditions were thought to have caused the accident” with BROUGHT becomes “The accident seems to have BEEN BROUGHT ABOUT BY icy road conditions”.

4. Fixed expressions

“Did anything about his actions seem strange to you?” with STRIKE becomes “Did anything about his actions STRIKE YOU AS STRANGE?”, because the fixed expression is to strike one as odd, strange or unusual.

These are among the ones that come up most in Part 4:

Technique for Part 4, worked through

Example 1: Bob tends to eat sweets when he feels depressed. HABIT.

1. Identify what is not needed and what changes. Cut the repeated ideas and decide what the key word replaces. Here “tends to” becomes HABIT, leaving “eat sweets” as the core to transform.
2. Build the transformation, usually in two parts. HABIT suggests “have a habit of”, the vocabulary change. The original uses an infinitive, so switch to a gerund, the grammar change. Bob has a habit + eat sweets becomes Bob HAS A HABIT OF EATING SWEETS when he feels depressed.
3. Check the meaning. Both sentences say the same thing.
4. Check the form: 3 to 6 words, key word unchanged, spelling correct.

Example 2: I’m sure that Jill wasn’t pleased when her boss arrived at her party, because she’s never liked him. CAN’T.

1. Remove the repeated ideas and focus on what has to change.
2. Apply the patterns. CAN’T with a past meaning gives a modal perfect, “can’t have” plus past participle. “Wasn’t pleased when” points to “pleased to” plus infinitive. The answer is Jill CAN’T HAVE BEEN PLEASED TO see her boss arrive, since she’s never liked him.
3. Check the meaning. It matches.
4. Check the form: 3 to 6 words, key word unchanged, accurate spelling.

Three things to hold on to. Most answers need two transformations. Even when you are unsure, build a sentence with logic, because a half-right answer can still earn 1 of the 2 marks. And never leave a blank. With practice and familiarity with the patterns, scoring above 60% in Part 4 is realistic.

The jump from B2 to C1 is a vocabulary jump, and it is the one you have to plan for

The single biggest difference between B2 First and C1 Advanced is vocabulary. B2 vocabulary is largely everyday. C1 vocabulary is more formal and more academic while also demanding a wide range of informal phrasal verbs and idiomatic expressions.

For C1 it comes down to three things: nuance, collocation and register. Engage with English at a higher level. Read, listen and write as much as you can. The British Council and Cambridge are the two best sources of high-quality C1 reading and listening material, and the Cambridge online dictionary is the fastest way to learn collocations. For register, read and listen to higher-level journalism or academic material. The BBC works well because you can study English while reading about something you actually care about.

The clock: 30 minutes for the three Use of English parts, 60 for Reading

Timing is one of the biggest challenges of the C1 paper. Candidates who fail often do so because they cannot finish inside the 1 hour and 30 minutes. Practise under time pressure until you can.

Allow 10 minutes for each Use of English exercise, so Parts 2, 3 and 4 take 30 minutes. That leaves 60 minutes for Reading Parts 1, 5, 6, 7 and 8. To make it work, follow the one-pass strategy: answer everything at speed, and do not linger. Leaving a question and coming back beats spending 2 minutes staring at a Part 2 gap.

Claire Farrell

Academic Coordinator at Preptiviti · Cambridge English Examiner (Speaking & Writing)

Cambridge English Examiner — Speaking · Cambridge English Examiner — Writing

Claire Farrell is Academic Coordinator at Preptiviti and a certified Cambridge English Examiner in Speaking and Writing. Her work combines pedagogical content development, supervision of official Cambridge exams, and direct candidate assessment. With daily experience marking Writing and Speaking at B2 First and C1 Advanced levels, she brings real certified-Examiner perspective to Preptiviti's content.

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