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Cambridge B2 / C1

Part 3: word formation

Prefixes, suffixes, and the word class the gap needs.

12 minutes · A free lesson from Use of English

Lesson quiz

Check what you have learned. Choose an answer to see whether it is right, and why.

Quick check: Which word class goes after “the” or “its”?

  1. A noun
  2. A verb
  3. An adverb
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A: A noun — Before a noun, an adjective. Describing a verb, an adverb.

Quick check: Which spelling is correct?

  1. unecessary
  2. unnecessary
  3. unneccessary
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B: unnecessary — un + necessary: a double n, one c, a double s.

Quick check: The word describes a verb. Which form do you need?

  1. A noun, such as efficiency
  2. An adjective, such as efficient
  3. An adverb, such as efficiently
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C: An adverb, such as efficiently — Check whether the meaning is negative too: un-, in-, im-, dis-, ir-.

Practise: Part 3
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