Exam English

Cambridge C1 Key Word Transformations: Keep the Meaning

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Here is a common trap:

The final decision depends on whether the landlord approves the changes.
HINGES
The final decision ______ the changes.

One valid answer is hinges on the landlord approving—five words.

Another is hinges on whether the landlord approves—six words. The first uses a gerund-participial clause with the landlord as its subject; the second states the alternatives with an explicit whether clause. Both keep approval unresolved. Neither says that the landlord will approve, so a fair key should accept both structures.

This is the central lexical decision in Cambridge C1 Reading and Use of English Part 4, Key word transformations: change the structure without changing the claim.

The current task gives a first sentence, a key word, and a second sentence with a gap. You must use the key word unchanged, write three to six words, and preserve the first sentence's meaning. There are six questions, worth up to two marks each. Cambridge identifies grammar, vocabulary, and collocation as the practice focus.

You can build wider task vocabulary in the Cambridge C1/C2 vocabulary hub and compare the other exam routes in Exam English.

Four checks before you write

  1. Meaning: What facts, limits, time references, and logical directions must survive?
  2. Pattern: What grammar does the unchanged key word require?
  3. Count: Does the answer contain three to six words?
  4. Fit: Does the completed second sentence read naturally from start to finish?

Do not rely on a grammatical answer alone. Part 4 tests semantic control too.

Six high-value transformation patterns

Amount to and constitute

Amount to can mean reach a total or be equivalent in meaning, effect, kind, or significance: The extra charges amount to £80; The refusal amounts to a change of policy. Constitute overlaps in the equivalence sense.

The complement matters. A numerical total and an evaluation of what an act effectively is are different uses. Do not infer criticism unless the sentence supplies it.

Boil down to and come down to

Boil down to names the essential cause, reason, or deciding factor after complexity has been stripped away: The dispute boils down to trust. The to is a preposition, so it takes a noun, a gerund, or a wh-clause: boils down to whether we can agree.

Come down to is a near-total synonym and often sounds slightly more neutral. Do not build a transformation that calls one wrong on meaning alone. The task may instead test particles, complement form, or a fixed key word.

Hinge on and depend on

Hinge on means depend on or be contingent on: The launch hinges on approval. Depend on is essentially synonymous. Hinge on does not say the condition has been met.

Watch the direction. If the launch hinges on approval, approval does not hinge on the launch.

Concede and admit

Concede accepts a disputed point, limitation, or opposing argument as valid, often while the wider position remains: She conceded that the schedule was unrealistic; however, she still supported the plan.

Admit often fits owning an unwelcome fact or mistake without a debate frame. The verbs overlap. Use the surrounding argument to decide whether an explicit concession is being made. The standard proposition pattern is concede that + clause, not concede to + fact.

Outweigh and be more important than

A outweighs B means A has greater importance, value, or effect in the comparison. It does not erase B. The stronger side is the subject, and there is no than: The benefits outweigh the costs.

This direction is easy to reverse during a transformation. Preserve which consideration is stronger.

Account for and explain

Account for can explain a fact by identifying a cause or circumstances: Lower prices may account for the rise in demand. It can also mean constitute a share of a total. Explain is broader, and the causal uses overlap.

Account for does not mean take into account. It also does not automatically claim a complete or proven explanation. Keep cautious modals if the source sentence has them.

Worked set: six original transformations

Try each item before opening the answer line. The key word must remain exactly as shown.

Understanding is only the first step.

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1. Equivalence

The revisions constitute a major change to the original plan.
AMOUNT
The revisions ______ to the original plan.

Answer: amount to a major change (5 words)

Semantic check: Constitute and amount to both describe what the revisions effectively are. The answer keeps major and does not turn the change into a numerical total.

2. Essential point

Ultimately, the dispute is about who will pay the transport costs.
BOILS
Ultimately, the dispute ______ the transport costs.

Answer: boils down to who will pay (6 words)

Semantic check: The answer keeps the payer as the essential issue. Boils down to paying would be grammatical, but it would lose the question of who pays and therefore change the meaning.

3. Unresolved condition

Whether we launch on Friday depends on the permit arriving by noon.
HINGES
Whether we launch on Friday ______ by noon.

Answer: hinges on the permit arriving (5 words)

Semantic check: The launch remains conditional on the permit's arrival. The answer does not claim that it has arrived. Hinges on receiving the permit (5 words) is also grammatical and preserves the condition; it changes the information structure, but the understood receiver is recoverable from whether we launch.

4. Accepted limitation

Mara admitted that the schedule had been unrealistic, but she still supported the plan.
CONCEDED
Mara ______ unrealistic, but she still supported the plan.

Answer: conceded that the schedule had been (6 words)

Semantic check: The second clause shows an argumentative structure: Mara accepts one limitation without abandoning her wider position. The that-clause is complete and the key word is unchanged.

5. Relative importance

For the panel, the benefits were more important than the drawbacks.
OUTWEIGHED
For the panel, ______.

Answer: the benefits outweighed the drawbacks (5 words)

Semantic check: Benefits remain the stronger consideration. The drawbacks outweighed the benefits is perfectly grammatical but reverses the decision.

6. Causal explanation

The wet weather explains why fewer people attended.
ACCOUNTS
The wet weather ______ attendance.

Answer: accounts for the lower (4 words)

Semantic check: Accounts for takes a direct object after for. Lower attendance preserves the smaller crowd. The sentence does not claim that weather excuses anything or that every cause is known.

What the wrong answers teach

Items 2 and 5 show why grammar is not enough. Boils down to paying and the drawbacks outweighed the benefits are both well-formed English. They fail because they change a source fact.

The same danger appears with modality:

Weak: The extra traffic accounts for the delay.

More precise source-preserving rewrite: The extra traffic may account for the delay.

If the first sentence says traffic is only a possible explanation, dropping may makes the claim stronger. A transformation must preserve that limit.

Common mistakes

  • Changing the supplied key word, even when another tense looks easier.
  • Writing fewer than three or more than six words.
  • Counting punctuation as a word or building an answer around a contraction when the item does not need one.
  • Dropping a modal, negative, comparison, or unresolved whether clause.
  • Reversing logical direction with hinge on or subject-object direction with outweigh.
  • Writing outweigh than or hinge in.
  • Using boil down to + base verb; the to is a preposition.
  • Treating overlapping pairs as exact opposites merely to create a rule.

Quick check

Which completion keeps the meaning?

The fall in costs may explain the increase in orders.
ACCOUNT
The fall in costs ______ the increase in orders.

A. may account for
B. accounts fully for

Answer: A (3 words). B is grammatical, but it removes uncertainty and adds completeness.

Now check the direction:

The final choice depends on whether the trial remains affordable.
HINGES
The final choice ______ affordable.

Answer: hinges on whether the trial remains (6 words).

Fresh practice

Transform this sentence with a three-to-six-word answer:

Although the new route causes some disruption, its long-term benefits are more important.
OUTWEIGH
In the long term, the benefits ______ caused by the new route.

Before checking vocabulary, write down four facts to preserve: the long-term frame, the benefits as the stronger side, the existence of disruption, and its link to the new route. A possible answer is outweigh the disruption (3 words).

Sources

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