Not harder — different
At B2 you were tested on core tenses, the standard three conditionals, basic reported speech and the passive. All of those are still assumed at C1. What changes is that a new set of structures joins them, and they share a purpose: controlling emphasis and register rather than expressing basic meaning.
That purpose is why they are worth learning as a group. Each one lets you say something you could already say — but in a way that foregrounds a different part of it, or lifts the formality. That is precisely what the C1 Language descriptor means by range used with flexibility and precision.
Mixed and inverted conditionals
B2 teaches first, second and third conditionals as three fixed shapes. C1 breaks the shapes.
Mixed conditionals cross a past condition with a present result, or the reverse: “If I had taken that job, I’d be living in Berlin now.” The if-clause is third conditional, the result is second. B2 has no room for this because it treats each conditional as a self-contained pattern.
Inverted conditionals drop if altogether and invert instead — a formal register move:
- Had I known, I would have said something. (= if I had known)
- Were I in your position, I’d wait. (= if I were)
- Should you need any help, do let me know. (= if you should need)
That last one is worth memorising verbatim — it appears constantly in formal letters and proposals, which are Writing Part 2 options.
Inversion for emphasis
Put a negative or restrictive adverbial at the front of a sentence and the subject and auxiliary swap places. The meaning does not change; the emphasis and the formality both jump.
| Ordinary | Inverted |
|---|---|
| I have never seen anything like it. | Never have I seen anything like it. |
| She not only wrote it, she also published it. | Not only did she write it, she also published it. |
| He realised the mistake only later. | Only later did he realise the mistake. |
| The results were not published until 2019. | Not until 2019 were the results published. |
This is heavily tested in Part 4 key word transformations, where a key word like NEVER or ONLY is a direct instruction to invert.
Try it nowInvert on command: real Part 4 itemsKey words like NEVER, ONLY and UNTIL, with the structure named in every explanation. The first is free.PractiseCleft sentences
A cleft splits one sentence into two clauses so you can point at the part that matters. Two shapes cover most uses:
- What-cleft: What really matters is the precedent it sets.
- It-cleft: It was the timing, not the cost, that caused the problem.
These earn their keep in the conclusion of an essay, where you have to rank two points and say which wins. One cleft there does more than a paragraph of ordinary sentences — see the C1 essay guide for how it fits the task.
Nominalisation
Turning verbs and adjectives into abstract nouns. It compresses an argument and raises the register at the same time, which is exactly what a 220–260 word task needs.
| Verbal | Nominalised |
|---|---|
| Because governments do not regulate this properly | The absence of proper regulation |
| People are increasingly worried that | Growing concern that |
| Since the policy failed repeatedly | The repeated failure of the policy |
Used well it is invisible and formal. Used relentlessly it becomes unreadable, and examiners notice that too — the target is a tool you can reach for, not a default.
Participle clauses
A way of joining two ideas without a conjunction, and a reliable way of saving words:
- Having finished the report, she sent it on. (= after she had finished)
- Not wanting to intrude, I waited outside. (= because I did not want to)
- Published in 2020, the study changed the debate. (= which was published)
One rule matters: the subject of the participle must be the subject of the main clause. “Having finished the report, it was sent” is wrong, and it is the commonest error with this structure.
The subjunctive
Rare in everyday English, alive in formal writing — which is where C1 tests it. After verbs and adjectives of demand, suggestion and necessity, the verb appears in its bare form:
- It is essential that she be informed. (not is informed)
- The committee recommended that he resign. (not resigns)
- I would suggest that the deadline be extended.
That third pattern belongs directly in a proposal, where recommending is the whole task.
Discourse markers that do real work
Moreover and however are fine and invisible. The ones that lift a piece carry an argumentative relationship rather than just a join: admittedly, that said, by the same token, conversely, if anything, in which case.
Where each of these actually shows up
| Structure | Tested most in |
|---|---|
| Inversion | R&UoE Part 4, Writing |
| Cleft sentences | Writing conclusions, Speaking Part 4 |
| Nominalisation | Writing — all Part 2 task types |
| Participle clauses | R&UoE Parts 2 and 4, Writing |
| Mixed conditionals | R&UoE Parts 2 and 4, Speaking Part 4 |
| Subjunctive | Writing — proposals and formal letters |
Notice how much of that column is Writing. These structures are not decoration for the Use of English paper; they are what a C1 essay is built out of.
Try it nowPut one of these into a marked piece of writingFelix marks Language on range used with precision — your own sentences quoted back.WritePractising it
Recognition comes before production. Drill them where they are tested most directly — open cloze and key word transformations — until you spot the trigger without thinking, then start putting one deliberately into every piece of writing you do.
See also C1 vocabulary, the C1 study plan for where grammar sits in a schedule, the exam glossary for the terminology, and the C1 Advanced exam preparation guide.