Revision questions: relative clauses
- What is the difference between defining and non-defining relative clauses?
- What is a sentential relative clause?
- Do we use a comma before the relative pronoun that?
- Which one is the most formal: whom, who or that?
- When can we not use that instead of which in a relative clause?
- When do we use a past participle (the third form of the verb) in a non-finite relative clause?
- When do we use a present participle (the -ing form of the verb) in a non-finite relative clause
- What does what stand for in I don't understand what you mean?
- Do we use a comma in a cleft sentence?
