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CourseGrammarDictionaryVocabulary
  1. Home
  2. ›Grammar
  3. ›B2
  4. ›Reduced relative clauses
Sentence structureB2

Reduced relative clauses

Trimming who is/which was: the man standing there, the books sold last year, the first person to arrive

Learning Goal

I can compress relative clauses into participle and infinitive phrases with the right voice.

Exam Skills:B2 First Use of EnglishB2 First Writing

Look at these examples. Can you spot the grammar pattern?

Passengers travelling with children board first.

Passengers travelling with children board first.

She was the only candidate to answer every question asked by the panel.

She was the only candidate to answer every question asked by the panel.

Pay attention to the highlighted parts. What do they have in common?

Drop the pronoun + be, keep the participle:

FullReduced
the man who is standing therethe man standing there
the books which were sold last yearthe books sold last year
the first person who arrivedthe first person to arrive

Active meaning → -ing; passive meaning → past participle; after first/last/only/superlatives → to-infinitive. Reduction works only when the pronoun is the subject of its clause.

Apply this grammar in B2 course exercises

Practice Exercises
  • Object-clause reduced: the film *watching we... — only subject clauses reduce
  • Voice flipped: *the books selling last year (they sold themselves?) → sold

Common Error Patterns

Wrong participle voice

Doing it → -ing; having it done to them → p.p.

Object relatives reduced

Only subject relatives reduce

Passengers travelling with children board first.

Passengers travelling with children board first.

Active reduction: who travel → travelling.

She was the only candidate to answer every question asked by the panel.

She was the only candidate to answer every question asked by the panel.

to-infinitive after only + passive reduction (asked).

Practice in course

Apply this grammar in B2 course exercises

B2 Course
← Back to topics

Related grammar topics

  • Relative clauses: who, which, that
  • The passive voice
  • Conditional 3 and mixed conditionals
  • Question tags
  • Linking devices: however, although, despite, therefore
  • Inversion after negative adverbials
  • Advanced reporting: questions, requests and verbs patterns
  • Whatever, whoever, however: no matter what