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CourseGrammarDictionaryVocabulary
  1. Home
  2. ›Grammar
  3. ›B1
  4. ›Relative clauses: who, which, that
Sentence structureB1

Relative clauses: who, which, that

Defining vs non-defining clauses, who/which/that/whose, and when the pronoun can disappear

Learning Goal

I can describe people and things with relative clauses and control the comma distinction.

Exam Skills:B1 Preliminary Reading

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

The barista who remembers everyone's order deserves a statue.

The barista who remembers everyone's order deserves a statue.

Our flat, which we bought in 2019, has doubled in value — the bank, whose money it really is, is thrilled.

Our flat, which we bought in 2019, has doubled in value — the bank, whose money it really is, is thrilled.

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

Two clause types with different rules:

defining (no commas)non-defining (commas)
peoplewho / thatwho only
thingswhich / thatwhich only
possessionwhose

The woman who lives next door (which one? — defining) × My neighbour, who is 90, runs marathons (extra info). Object pronouns can vanish in defining clauses: the film (that) we watched.

Apply this grammar in B1 course exercises

Practice Exercises
  • Comma before every clause (DE/Slavic habit): defining = no comma
  • that after commas: *My neighbour, that is 90 → who
  • Resumptive pronoun: *the film that we watched it → the film that we watched

Common Error Patterns

Commas added to defining clauses

Defining = no commas; extra info = commas + who/which

Object pronoun repeated

the film we watched — no extra it

The barista who remembers everyone's order deserves a statue.

The barista who remembers everyone's order deserves a statue.

Defining who — no commas in English.

Our flat, which we bought in 2019, has doubled in value — the bank, whose money it really is, is thrilled.

Our flat, which we bought in 2019, has doubled in value — the bank, whose money it really is, is thrilled.

Non-defining which + whose with commas.

Practice in course

Apply this grammar in B1 course exercises

B1 Course
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