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C1Teens, Adults· 30–40 minutes

Prefix im-

Build vocabulary through prefix im-, then use the target words in gap-fill and discussion activities. Includes a teacher answer key.

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What’s in the worksheet?

  • Target vocabulary with clear definitions
  • Gap-fill practice using each target word
  • Discussion questions for speaking practice
  • Teacher answer key on page 3

Build vocabulary with im- adjectives for relevance, plausibility and barriers, then use the eight target words in sentence completion and discussion.

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Page 1 of Prefix im-

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Page 2 of Prefix im-

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Page 3 of Prefix im- - answer key

Page 3 of 3 · Answer key · A4 printable PDF

A simple way to teach it

Before the lesson

Use pages 1–2 and keep the teacher key on page 3 for feedback. Introduce immaterial and imperceptible, checking meaning and pronunciation before the gap fill.

  1. Contrast literal impassable roads with figuratively impenetrable language; clarify immaterial as irrelevant here, rather than physical substance.
  2. Complete the eight sentences using each vocabulary word once. Compare choices with a partner and explain the context clues before checking the key.
  3. Discuss implausible explanations, immoderate requests and whether rules are immutable. Use the five printed questions for pair discussion and short notes; responses are individual, not fixed-key answers.

Support and extension

Support with collocations from the sentences; extend by making a difficult explanation more accessible while preserving its meaning.

Suggested approach. Adjust the pace and number of questions to suit your class.

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