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Defining Relative Clauses VS. Non-defining relative clauses
They provide interesting additional information which is not essential to understanding the meaning of the sentence.
Example: Mrs. Jackson, who is very intelligent, lives on the corner.
"Mrs Johnson lives on the corner" provides a good piece of information. We also know that she is very intelligent, thanks to the relative clause (another interesting piece of information).
NB: YOU MUST USE COMMAS!
their information is crucial in understanding the meaning of the
The woman who lives in apartment No. 34 has been arrested.
What woman? The woman who lives in apartment n°34, not another
A defining relative clause clearly defines who or what we are talking about. Without this information, it would be difficult to know who or what is meant.
NB: NO COMMAS!
is better? which/who
the right pronoun:
1. Ø / that / which | 2. that / who | 3. that / who |
4. that / which | 5. A robot is a machine which/that can replace human
workers. | 6. A vet is a doctor who/that treats animals.