A1 · Prepositions

By and of

Use by and of in common beginner phrases.

Learning objectives

  • Recognise the form and meaning of by and of.
  • Use by and of in controlled A1 sentences.
  • Identify and correct common beginner errors.
  • Apply the concept in a short personal or everyday context.

Grammar rules

  • Use by for means, agent, position or deadline in simple phrases.
  • Use of to show relation, material or quantity.

Examples

  • I travel by bus.
  • The cup is made of glass.
  • A bottle of water is on the table.
  • Sit by the window.

Common mistakes

  • Using a form that does not agree with the subject or noun.
  • Using the correct words in the wrong order.
  • Adding or omitting a required auxiliary, article or preposition.
  • Choosing a form that changes the intended meaning.

Revision notes

Review the rule, say the examples aloud, write two new examples and retake the concept test until you achieve at least 80%.

Validated question bank pending